diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/111962.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/111962.png
new file mode 100644
index 0000000000000000000000000000000000000000..16d56ed72175bcb73a99a1d51407fa393100aa89
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/111962.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d5b8974aa128970bb1951a9172ec0f8ecdf57f0704f3f68ff955519281697895
+size 411175
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/898.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/898.png
new file mode 100644
index 0000000000000000000000000000000000000000..2a6e7db40dd7ad54711ae3d7deb46e072fa0faa6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/898.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3dc202d7510783ee6169540cd75676bf55ce7264c3bfffd61c4918fb7a28aa8f
+size 377886
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/899.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/899.png
new file mode 100644
index 0000000000000000000000000000000000000000..2ca0e4ce6b6e790b6f47fa4c76a54d266200fc99
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/899.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:91b4a79ac639c6c9ea307c223086b038c31e2462336bfb8bb3717165cde7c92d
+size 419337
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/900.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/900.png
new file mode 100644
index 0000000000000000000000000000000000000000..35217bb5f0cdaacff92acd039dda2df8bdf1a865
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/900.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3a74e79be2ec3c13d030a09197fe2530797d66af7a406044aa80af07bb78e513
+size 401536
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/901.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/901.png
new file mode 100644
index 0000000000000000000000000000000000000000..a8c8a46d7dde0f6d3bcca2005904c80fe89d252f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/901.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:77511a1d8bbe9f6d91e1ffdd911d1259e61cfccf72d7fe357b1b645c5422e3f5
+size 458705
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/902.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/902.png
new file mode 100644
index 0000000000000000000000000000000000000000..924d0a6ce4bc441fca2754f155ad960f4cf3d004
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/902.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:927b083bb387cbd13f671e945dbc00c8313272b76dace8f53fe4d4ca19bddb10
+size 517241
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/903.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/903.png
new file mode 100644
index 0000000000000000000000000000000000000000..f02c702a796553d282fa2362621931ff775e862a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/903.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:aab9ff86497ede25876ccc9a8ddafb9352883c0ac8244902b861b64f63fc2e0f
+size 382329
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/904.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/904.png
new file mode 100644
index 0000000000000000000000000000000000000000..0f9aa20d00066a1f416feb65a8efd1200dd71280
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/904.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:94fd9b264fd5286d9eed9f64261190c8c64859c3d071eeb8f499de7867a040b2
+size 303495
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/905.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/905.png
new file mode 100644
index 0000000000000000000000000000000000000000..20a8c5cbdc2e91d135c6a11240f21540be0ad6f6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/905.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e49155c57a63b5fae06a85c45aa926743a62920b2c488e52a369659571bffb3f
+size 369176
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/906.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/906.png
new file mode 100644
index 0000000000000000000000000000000000000000..89179ccd176fc133191d0b55997388fa556f89e0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/906.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c91eeb38c29f0f444659ff6d495fab68728fa0ccaba63c290608939eaeec8c0b
+size 428566
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/907.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/907.png
new file mode 100644
index 0000000000000000000000000000000000000000..82dc2e94ad4f2ec0a8ae3e0f82262094d0921e5b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/907.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ae82e4209dd131b7e5b6037b1539ceb46efdcd0484a8ba83b1c76cb9fd90ceed
+size 447538
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/908.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/908.png
new file mode 100644
index 0000000000000000000000000000000000000000..0f2a1fc2284d2c77564ce641288fb008b9e8538e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/908.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d1c081021173478a2d4cf8643a81f716719c26f436068c7ea259f81c7fd62f2a
+size 356982
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/909.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/909.png
new file mode 100644
index 0000000000000000000000000000000000000000..e31ae4faec7e3833957a2a6a35d84fecc30264f3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/909.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:95d4117902b2c94633f3f1039e58b6a1e6acdae6584ec082db092f344e5cc41a
+size 383389
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/910.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/910.png
new file mode 100644
index 0000000000000000000000000000000000000000..95e2ead15a4a8e4d387e10a65e366fb3ef646cec
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/910.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3b1a5e5de969807683c26b2f4b9d5a6fcd5d333e1c61d4c13cf9687158f8afcd
+size 412185
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/911.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/911.png
new file mode 100644
index 0000000000000000000000000000000000000000..7ed7aedb0c0d4d898dfa610cacc17fad7645b6dc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/911.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:14836cef84ae86725f2e633fd4da0ce4454c4f017793ff10ee5f7e1d39a9973b
+size 249089
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/912.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/912.png
new file mode 100644
index 0000000000000000000000000000000000000000..f1258f1c6e0b3f82453af51563ac5f93cf301a76
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/912.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2ea1ab6b2f2ed906db228da475c8153a04997eb10238bfe0b2142d580356b377
+size 302374
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/915.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/915.png
new file mode 100644
index 0000000000000000000000000000000000000000..bcf665a059994985c5fbdd94f4cab347b08ea5a3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/915.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:463cb116d6791d00d1ee4ea09a89be21ade8b76f8d864bee35cbdaeec0c51caf
+size 317643
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/916.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/916.png
new file mode 100644
index 0000000000000000000000000000000000000000..6bf3d38eb85a9be686fa43ec4c0474c13457f4ac
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/916.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2250f07683fc01d6f2031e1ab1b5e953ab1a5fe19618744a9d34a79d19fa06ff
+size 416311
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/917.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/917.png
new file mode 100644
index 0000000000000000000000000000000000000000..2302c351b179e464da0d0a75d222a861676d74b0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/917.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:da542b0603d61f71638d82c272cfb5ceab7a438fbe73c2beab167ae3800fb461
+size 379005
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/918.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/918.png
new file mode 100644
index 0000000000000000000000000000000000000000..daefa676f5f46fbd05b5857c869af51a3af65e4f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/918.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4536753aa5679b85ac189966fce2bc0c73221a91970301f2eafb17588fbcf4cd
+size 368029
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/919.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/919.png
new file mode 100644
index 0000000000000000000000000000000000000000..db5f74775820e6437b578200cc0c939abf962e06
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/919.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:74f838494d351667fedeb452c85c10e723500f24f6879193071056e174d452ee
+size 330889
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/920.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/920.png
new file mode 100644
index 0000000000000000000000000000000000000000..c420f6fd27b15aa15be6acaa71dfd797d724ef78
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/920.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8f94fd3c2e92ecd5b79337496ec7cc6d466ab8962c991d1aec7fa79b15a1e62d
+size 481833
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/921.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/921.png
new file mode 100644
index 0000000000000000000000000000000000000000..334dff6431fd178c6ed0e8c2bb98fe4e6bc26989
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/921.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6807a9abfefd817027cac54cf41575e4b701346cd5427aa58def63d0f0a32b80
+size 420746
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/922.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/922.png
new file mode 100644
index 0000000000000000000000000000000000000000..cca1d55a8e498673fb39dd33f16c975550924bb9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/922.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4b28e19144cae0c4a17428a2429ea34ccada0f4bb7efc9e9c8f8b4653dfb99e4
+size 204895
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/923.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/923.png
new file mode 100644
index 0000000000000000000000000000000000000000..d0fd558e47a69070397948a7aacb23ffe38d398b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/923.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3ad074d8f50f607b811ff7a64d5f5015f461249bea9ae66ec0da6b5b78f63829
+size 381812
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/924.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/924.png
new file mode 100644
index 0000000000000000000000000000000000000000..373a7ad6350438a362be774443ac33c0d7501750
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/924.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e569daaf498d255a99b60f1d923dbf4ff373949bbde125eb16c101ba71a5292d
+size 392960
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/925.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/925.png
new file mode 100644
index 0000000000000000000000000000000000000000..c60aeb799cb37e5242f01b692fba7eb1433b6c30
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/925.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b24ada4aa604f33ec32006ba4ed5a592ec8249c310f1cdb0267e9c00dc3e6463
+size 486920
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/928.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/928.png
new file mode 100644
index 0000000000000000000000000000000000000000..015e22ce39d3cea84bd2be93a3d0fe768238b4a2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/928.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8821845e022540bab60aa2bf49c3abaeca3a4165c9189b221087295dceb6850a
+size 384197
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/929.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/929.png
new file mode 100644
index 0000000000000000000000000000000000000000..1f03fbd10e3e18ce3ac5702a9ccd1d888ab1e765
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/929.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:00c6d2927015456968752c6632df4a40d8d50536c9687418bab5557d2e57658c
+size 378648
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/930.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/930.png
new file mode 100644
index 0000000000000000000000000000000000000000..77bc410102780d06542e4c6437e947fb00d3a34d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/930.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9e3e09d086bd0a52036aa269c376c42bd0cd090665ad611c96240398be07ba37
+size 407866
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/931.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/931.png
new file mode 100644
index 0000000000000000000000000000000000000000..6e06bc49d9343e780b9aeb935ca6fd46966381f9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/931.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fc10df6a35e13d90415fe30d5b6f76474eaadaeb3332de29445d301df2093e11
+size 400194
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/932.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/932.png
new file mode 100644
index 0000000000000000000000000000000000000000..a0be561b1e5b4616c9680d92a0cb4ffad4f07f5c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/932.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f850392c8b59763c70802f1f5ccede6dd4911788817cf7492cb017efb2d9acd9
+size 377969
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/933.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/933.png
new file mode 100644
index 0000000000000000000000000000000000000000..30ea8fceae517f78663fe9b68631b1b7ef618822
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/933.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:989c8336b9cbeacb685728a71e88ce93e8a2fa8a4957bc978a10148aac60abf0
+size 440721
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/934.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/934.png
new file mode 100644
index 0000000000000000000000000000000000000000..1c560cc303a24628abd7147eb23e4920520d7e70
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/934.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2fba6127b17550d2456d6414d0e79ecde8cd2e03268f20f2b84ad3b460a04a2b
+size 378837
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/935.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/935.png
new file mode 100644
index 0000000000000000000000000000000000000000..589214188c49507acfbde0586fe69abc48ab06c1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/935.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:70b1fa143a30b7ab264f8baed2003e0ce8a8c3f34840cc5824c9919cd18131e7
+size 335026
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/936.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/936.png
new file mode 100644
index 0000000000000000000000000000000000000000..2b0ddb9ca90111e71b02cfad30a1e1cfbea5aac0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/936.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2f9dfc12ed9806482cb5a1885812a81a7ad718fcd60f6ea378fe5a1a02047038
+size 432655
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/937.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/937.png
new file mode 100644
index 0000000000000000000000000000000000000000..b432a6814d5b2a515ff87e8f7bcef7cfe5302447
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/937.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2cb4998289ddfbab91ae4b355a0e801ed5b83cc8bd30f66712b26896ac291609
+size 450946
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/938.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/938.png
new file mode 100644
index 0000000000000000000000000000000000000000..c863e826aaa6d1873f9acf13250d35018429113b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/938.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:737b3a177e0f02cc5aefa6e1ead10db4674b366ca530b8b4380672491e850c5f
+size 424873
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/939.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/939.png
new file mode 100644
index 0000000000000000000000000000000000000000..79cfbf423ae9c125528c70b2dae50eacdf5bbe03
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/939.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:41e6cf33999e365de5f5d4f045d028fdb9c457e5ab225612735e2dde7fbb94d2
+size 346220
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/940.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/940.png
new file mode 100644
index 0000000000000000000000000000000000000000..07b09a71a2508d7b3f09927e2807aab7521e518e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/940.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3942219fe32c52d7948c05dc3d3bad9665fec860fe8aaa39a783ab83da60db53
+size 439459
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/941.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/941.png
new file mode 100644
index 0000000000000000000000000000000000000000..b3cab41c756762dba8d018c7f9897d8d911a7fbb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/941.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e2cc0f3386027b07de27b004d27f570305b63c6e72785e3943f7b26de7e5cd3d
+size 445870
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/942.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/942.png
new file mode 100644
index 0000000000000000000000000000000000000000..f13a23428cc5470a3304e83ea658db70b6eeb5e6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/942.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bc018c2345fc22beeba83b39e41b1b190a9c45de2f334596c11e290648f0ff72
+size 453391
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/943.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/943.png
new file mode 100644
index 0000000000000000000000000000000000000000..53ffe5fbc01d05c1cbb055f8a1c2bb67e4be209c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/943.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c66d5fe19b0fd14e5789ae95ff377c667a514cf5a49639ce9e4bd00ae93ad66c
+size 422939
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/944.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/944.png
new file mode 100644
index 0000000000000000000000000000000000000000..1aea348c713b75ede9d14ef2af5050bdf4b52846
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/944.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e5d04ed9f30afb6277818f704ac548a556763ae09017868d3cb4d20c974de640
+size 468112
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/945.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/945.png
new file mode 100644
index 0000000000000000000000000000000000000000..c76a957050e9dde8f04054543d077f25342fc6c8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/945.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b6edc327bcffe3757157bbbe1cc3fe4522619910d136be7ad994a853caa28ade
+size 425022
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/946.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/946.png
new file mode 100644
index 0000000000000000000000000000000000000000..5d0de01a8de2bd71c3f11e83edc8426f305bde64
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/946.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f9897b1fe3f325b7737b7dc63a28e7188f4167eeb926ab3139b8410e6377073c
+size 447339
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/947.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/947.png
new file mode 100644
index 0000000000000000000000000000000000000000..ca173139058b126aee750c588b2d279615d658ad
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/947.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:38080ab75cc975d168b6ede6804a43c820a90fe9a96a958a60bae22b7782c72d
+size 458644
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/948.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/948.png
new file mode 100644
index 0000000000000000000000000000000000000000..fd5b36e80521f083e00bb5484a41802991ca0b07
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/948.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ff738c4f4c168e304c256b5ca875ca2ff21d704b34a4c69f9ae199baf9cf3b2c
+size 382828
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/949.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/949.png
new file mode 100644
index 0000000000000000000000000000000000000000..65f55393d35454ba8f952aa3974de05649e41924
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/949.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:89df9bcca580e641803bfa2b94f9315c439294822531cf7a692f65e0f3c51fe9
+size 434552
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/950.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/950.png
new file mode 100644
index 0000000000000000000000000000000000000000..2f27ee29e9e1e16ed0cb5f523bca7f07b93ccf16
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/950.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:332982f3fbce697738229155fedf7469b4ce1c081172e34d08c5df9d008a0dfc
+size 315179
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/951.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/951.png
new file mode 100644
index 0000000000000000000000000000000000000000..f54b8d960951098e2aece280e98760d32ce9b611
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/951.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9f403ea67a99a826181091addc3936d1b82566a96fc9d8a701e9dd3bd1f3faa3
+size 358743
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/952.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/952.png
new file mode 100644
index 0000000000000000000000000000000000000000..8014c8b9b77f9fb634d27eca8e7403e9b6c2da57
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/952.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:311522363dce982ca3ef3128f75224f3a407b688d434c296a319fddd95e4be01
+size 320616
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/953.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/953.png
new file mode 100644
index 0000000000000000000000000000000000000000..3e9026e52a0d099494d919fa219d4aa53a756166
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/953.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:744cd912617ce4a656fdeb53d680ad9771127393f694bf1d177943e51840f809
+size 391659
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/954.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/954.png
new file mode 100644
index 0000000000000000000000000000000000000000..13461241676c9602ff4f203c5b596da2d27e8eca
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/954.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:35fd7af512b0a1501c4676aad42363d42d1655327909754323b90ed759828bf8
+size 522320
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/955.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/955.png
new file mode 100644
index 0000000000000000000000000000000000000000..c892ffdcd588b6dda25631286ead0976681350ec
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/955.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1cb0a16c7a68d5d30ca84b8cccf6aedfc315c38ebc87af9deacce5b3503db312
+size 400793
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/956.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/956.png
new file mode 100644
index 0000000000000000000000000000000000000000..89a169708c00fdfccfd92bfe5dd248d52be29e1c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/956.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f5d70b4e020a6e0b8dede0e0d66d78731f6c75bd66d6bcbbfa957801a10b4777
+size 385879
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/957.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/957.png
new file mode 100644
index 0000000000000000000000000000000000000000..8fbd4324792628218656f43eae578d148959b312
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/957.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:629a5a7b279743cb8b349d82bc76e394d1d525da888e32406697f13d9bca5957
+size 492497
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/958.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/958.png
new file mode 100644
index 0000000000000000000000000000000000000000..ff5d3eef90a808c9b461c978441a9b59cb292d90
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/958.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e0e5413fa3137c6ecf9b16f7365607b17ed6fa62164ffdc3a525cf26aefdc137
+size 320462
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/959.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/959.png
new file mode 100644
index 0000000000000000000000000000000000000000..17b952d5e5af973991f5a06e8ad55001ddeb7d4f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/959.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:231783d40288dcdc85bbc7efdb179e3c35e4836866fc6f6da9002b549aa75d2f
+size 454297
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/960.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/960.png
new file mode 100644
index 0000000000000000000000000000000000000000..ac5785867ae7d0524346a2aa8351e98a97885a0c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/960.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:894caf82e9a81afda7660b628e75f2a8cd97dfe197023bbab66263120d1b626e
+size 416890
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/961.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/961.png
new file mode 100644
index 0000000000000000000000000000000000000000..5839464e18f7a77fc7d73bd78c14f223197604a0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/961.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7b330592ce6da3dbcee3a86dba07dd2d92c36b36362789eafb3eb565ac99cf5c
+size 432250
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/962.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/962.png
new file mode 100644
index 0000000000000000000000000000000000000000..6226d3809cba96141beacb024004c9ae70bd6bd6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/962.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1b69e24f4b1f508218ff69d8d2ad7cb2fd951737bed18bad6f0f2734bbb75130
+size 415434
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/963.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/963.png
new file mode 100644
index 0000000000000000000000000000000000000000..754e90260d9c657a15db03f028e4b51116676c6d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/963.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:68a63b4acfe531a7c9487ee58646c60f11453a82133c908c0a0c62e5a8b4c632
+size 406953
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/964.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/964.png
new file mode 100644
index 0000000000000000000000000000000000000000..0ff8398b26beda336ea0a2f75566ff0d8dde97f7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/964.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:597d8e77896a730f236135725754b9641d2adf9e2b0ec06f6ff9de2dd023ebaf
+size 440663
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/965.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/965.png
new file mode 100644
index 0000000000000000000000000000000000000000..677745a04a2c081de6f85dbf94f53ce5d941d1e8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/965.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c8531232470c1c68cd5ab713d82551d72f8ede1f681ae5587b3aaed1bb1a2438
+size 434233
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Action/966.png b/NextStep-1-HF/NextStep-1/cn/Part2/Action/966.png
new file mode 100644
index 0000000000000000000000000000000000000000..734ff688f49565694a8f9b993c93fdcc6236ea42
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Action/966.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:24de3ce29f02df313c14631d3937dea8614ff6f025e6aed6042d7dcf3bf85b85
+size 388025
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Move/1007.png b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1007.png
new file mode 100644
index 0000000000000000000000000000000000000000..dfc70ca37442fdff91f5b2820c8977f23b1a91f8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1007.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c8f24446e6278f607d1c3cb860b4f2f6e18e037b2b5546e88886aadfff0b375e
+size 426375
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Move/1016.png b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1016.png
new file mode 100644
index 0000000000000000000000000000000000000000..a2caf084812c2057cd24ee3989a01fc671b524f3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1016.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c57324f22a8dae9ea73a8e7f704e204dc11d8ce197fc9ecd15a5ee26b705e7a6
+size 393845
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Move/1021.png b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1021.png
new file mode 100644
index 0000000000000000000000000000000000000000..c191053d1361aabf9ffd7bf1b6f8ccea387dc469
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1021.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c0f8ae2b0d702c6dc06220c391425139bfa6fec29f96ab8a80ea8d8533e7d98a
+size 388641
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Move/1025.png b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1025.png
new file mode 100644
index 0000000000000000000000000000000000000000..9fb455f2ea51be33f04ccbbff590e08531fe62e7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1025.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:adaf0bbfde77d9e591f9390f196d2dfa8bf3b8ebd95be53c53e754b830bd4d25
+size 431346
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Move/1035.png b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1035.png
new file mode 100644
index 0000000000000000000000000000000000000000..0b17700e8fe002d24c76b9c483362621868caf89
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1035.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:973b3bc02e7e1a7bdf6674ac9bbdd0076d1ec3a0c01a5376759c07bbd683158d
+size 433921
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Move/1036.png b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1036.png
new file mode 100644
index 0000000000000000000000000000000000000000..123ed4d80a61e69f9612e85904f8628901b37554
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Move/1036.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9defad17dd88076b226c1ae1bc844ed9371425b5ed74b8d02e54d9f30fd72182
+size 415058
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Move/969.png b/NextStep-1-HF/NextStep-1/cn/Part2/Move/969.png
new file mode 100644
index 0000000000000000000000000000000000000000..bfd4ee08acc814a2c249bd7877035fa41855424d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Move/969.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:11fa802584fcca5c1142010308ce6af1095acf4deff1b6041411012ee4cf1ff1
+size 385772
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Move/971.png b/NextStep-1-HF/NextStep-1/cn/Part2/Move/971.png
new file mode 100644
index 0000000000000000000000000000000000000000..fd3397ac51aaa9d678b979e8f7a5d594b22c80f0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Move/971.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6582f6264945ce43a47bceed975a4646313538579cdadcc9752d1da3dd80458f
+size 230859
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Move/991.png b/NextStep-1-HF/NextStep-1/cn/Part2/Move/991.png
new file mode 100644
index 0000000000000000000000000000000000000000..cf6a5aba59c47081210aef5f9a63689f98394763
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Move/991.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6eceb8ebbdd89d5a0cc27c4d6a4208f4e51fcd17a162a837b348e9b28de661dc
+size 394490
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1106.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1106.png
new file mode 100644
index 0000000000000000000000000000000000000000..9707f5efb692fdeb411a957fbd0d6ce39696f99b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1106.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1efcbe6dfedfe2e52b737955fc90f8764c48a16e081454dd41692530fd8c77ab
+size 349142
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1107.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1107.png
new file mode 100644
index 0000000000000000000000000000000000000000..8b0c00feb6d1a5f1df2ae1c5e33e9706cd166af9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1107.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2fdb4b0617678fbe3cfb06252e341be128f224bf089ccfe79a24142ff1570f99
+size 367160
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1108.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1108.png
new file mode 100644
index 0000000000000000000000000000000000000000..0960345641d5f8e5dee52af7f4ebbc4e031a6744
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1108.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0a5447a37866ccf05d22a6d7279177182a4686792aa63c2a7ae9349588b8d7ad
+size 421348
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1109.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1109.png
new file mode 100644
index 0000000000000000000000000000000000000000..f8762861f91b912a2c000165824718ff6a72b1a7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1109.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d199bf44757d302d88ee173b30fb0148a1d158524d7c05f2ed114b7fa8b3125d
+size 385807
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1110.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1110.png
new file mode 100644
index 0000000000000000000000000000000000000000..86285133a118628e5dff1f1c54c9017e0b5422a4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1110.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d069fed3addeed07b176a52ed65a2489169a3a3c182a41f9e5b5da157e5efc55
+size 449661
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1111.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1111.png
new file mode 100644
index 0000000000000000000000000000000000000000..d20d2495d72437ac081d1cbe3d937dacd88515e3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1111.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ca57502f772bbaa73a3aa1ac8085c2bf8165a82ac2251bcdf4626bdc2d8712be
+size 444943
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1112.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1112.png
new file mode 100644
index 0000000000000000000000000000000000000000..b95e2f78aef25a2651c750d59359431497bb2bb8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1112.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df82222be0429c94acdb6730f8ffb943c836fd2095e6b88e16f134c7ca9ab49d
+size 424904
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1113.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1113.png
new file mode 100644
index 0000000000000000000000000000000000000000..81491c602839c980a9d9f737dfb449413e0d5046
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1113.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bdcb2686ee5c4d833de31019ba2697d4283e94355ddbb1b174b62c3db749e399
+size 429626
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1114.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1114.png
new file mode 100644
index 0000000000000000000000000000000000000000..40f6e744511850fb9349080e6ccb0beaea4874e3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1114.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:925f912cd16f845b9e0eb4356eda45dcb4f141a9745dc13d4a0542654061c2ec
+size 437078
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1115.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1115.png
new file mode 100644
index 0000000000000000000000000000000000000000..2db9454b4fb0cf950dbe01310d55b529f8c4c258
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1115.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e8d1280de12c9cb89ff93cd29244c848f51a53db7546c562da734cce42ebd7fa
+size 473173
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1116.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1116.png
new file mode 100644
index 0000000000000000000000000000000000000000..39cfefbf7ae2739c12abc6cad6d28090a2768cc2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1116.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:541c00ca94c5eb69da3a82e8f2f673df6385266fad527b06834edc72701da11d
+size 373426
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1117.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1117.png
new file mode 100644
index 0000000000000000000000000000000000000000..c4bf30b6c938c612898ffc1bdb364da049289bab
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1117.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d0ef6b3c484197ae69184a7237db450613f926123a54c45fbeacde3c11404b6d
+size 423577
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/11178.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/11178.png
new file mode 100644
index 0000000000000000000000000000000000000000..163de6d2bb76c3f0188ccec962eff4b011817eb9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/11178.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:984b0a079d0ca72f64abc7d7eaf1dc8a767dd454461c79522592c1f7f6ea4b3a
+size 371939
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1118.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1118.png
new file mode 100644
index 0000000000000000000000000000000000000000..4232a8c6a7b552cd68958ccde83c98f372f2d28b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1118.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:09f11984eec97e6ecc34d68c9888c0fab7dce6670ab20c3333756aa4b7694e56
+size 432686
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1119.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1119.png
new file mode 100644
index 0000000000000000000000000000000000000000..70ef2e96f73d36b706d77e2bd018579e0d2f8697
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1119.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:56e21c6bce17ab15d57df9a60619c155d84be64acff91660ece7963bf3da5537
+size 391131
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1120.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1120.png
new file mode 100644
index 0000000000000000000000000000000000000000..db1cbd6a27b1c15a3755900c1c160c5800b22fb5
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1120.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b0a2a67919bc2909411df95ab456e58c98c67ba56943af5350484b134de4e418
+size 440505
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1121.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1121.png
new file mode 100644
index 0000000000000000000000000000000000000000..a58e8545179dac5dcd6ab6b3e8f7d868fc1f0c8d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1121.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f4a299345db93cad699762a8eca89504a0e2b94182a36cbcd0f94b8eab5e5638
+size 437884
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1122.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1122.png
new file mode 100644
index 0000000000000000000000000000000000000000..4580f77ea96e93f77443c2716eeac59d6b3f0f41
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1122.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3d2e89dd972ab50506f566cb1139f3ac3fcaff319a202ed19693d69ba183a4ac
+size 414373
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1123.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1123.png
new file mode 100644
index 0000000000000000000000000000000000000000..94b3ec6af8150edffa68800fbdc642e861dbd3f3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1123.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e65a755a559ccc1a3fe06d51519dc50c3008d4fa9edb54740580ddde98d0bdfa
+size 435575
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1124.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1124.png
new file mode 100644
index 0000000000000000000000000000000000000000..165f62bc2a309702d24804194a689a92a7bd9d92
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1124.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b6a524e32fd4af860afdb6f012440c20d3b9d32547aee674919965fc71282772
+size 385080
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1125.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1125.png
new file mode 100644
index 0000000000000000000000000000000000000000..cf7127754c9b94582132d88d8afb5763512d1e7c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1125.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:132afb200430cdf466fe2d91f3ed61105b16fb69311793a85dfd84b821f4e6f2
+size 339682
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1127.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1127.png
new file mode 100644
index 0000000000000000000000000000000000000000..0968da15efbc9752338d3178808ecdf6508010bd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1127.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f19e78d93758fff3941c72e65c16fbbec24fb567202c9447543511d7222f8d83
+size 305860
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1128.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1128.png
new file mode 100644
index 0000000000000000000000000000000000000000..20ecd137f92d24a1f789aedeab2a5442344334d4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1128.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ee48ed142a6bcd4b3218347f868aba6fba32683e99f71e5893856670ef8098df
+size 437624
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1130.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1130.png
new file mode 100644
index 0000000000000000000000000000000000000000..bba9f8b264e9c27750be7cf2776a96f2e1d14714
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1130.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d5f96a506e08e6b8bdbae73628f6368d4d580156bf06f143fca9df1d5a8b7423
+size 345501
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1131.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1131.png
new file mode 100644
index 0000000000000000000000000000000000000000..740dcbfa2c7efd438d87e9dc3cfebdd9b53cda8a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1131.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9004e6dbacca0be5b275de6ec22dce5bbb7b166a9c5f68a46f61a59f48cae745
+size 462044
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1132.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1132.png
new file mode 100644
index 0000000000000000000000000000000000000000..d5ced0ab3faa4860a58bf140ceeca75d4e2a886d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1132.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bdb2dba3bdd507d61adcd528e5c3e878493032735f3bcc87a4bbc92d5eec95ec
+size 432348
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1135.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1135.png
new file mode 100644
index 0000000000000000000000000000000000000000..8f35bbceb63e2117e488f4800fe15ad57446b9e4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1135.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d25a2f6fff326a81197e51ab6f53ef88b21a2013f43a8de4731caf058bfbf2d1
+size 391862
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1136.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1136.png
new file mode 100644
index 0000000000000000000000000000000000000000..faa874dbdeda231dd6dfebff167dc6b4465e7afb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1136.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bb51b0f459b9ac5e77454da7e000225e6ec65d606374b09932e1228de48e4e5c
+size 430152
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1137.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1137.png
new file mode 100644
index 0000000000000000000000000000000000000000..72d84aea9885f34e9afdcda9f9abbdd5271e1437
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1137.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:65e7950aa8e572c3ae5086703c66a4d741750f074aa482e899b860dd70d58381
+size 405568
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1138.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1138.png
new file mode 100644
index 0000000000000000000000000000000000000000..87089d034846b3ff2ddabe380a5c7c5edd019731
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1138.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:33abdff10102c54f09b13987df6dbe1aa301e1d089cccdcabff29f000358deed
+size 404000
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1140.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1140.png
new file mode 100644
index 0000000000000000000000000000000000000000..e5b805d50f7ec43d60c190dcf4867f60c9dd0e34
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1140.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:67f19a304a78b25cf00c6a82ec115a5b3db2944874c40448813afacfac2f7bbf
+size 389551
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1141.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1141.png
new file mode 100644
index 0000000000000000000000000000000000000000..d3eac6fa6be65e0b8812620dd09c649ed68aa58a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1141.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:416dc54413edb0476e7461d341bba64e41acdc1d8bd17d3de7fd7fbb16a33e20
+size 437837
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1142.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1142.png
new file mode 100644
index 0000000000000000000000000000000000000000..366b01a6859399571dbe7c0a2fc326ca08d1f3f3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1142.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1ee6d5a8aba24407c35f3fac6d7258d664d660bb81749501847f6e47ea065526
+size 383360
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1143.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1143.png
new file mode 100644
index 0000000000000000000000000000000000000000..8f58e9216e51a512c546259eb40f2fc01edec720
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1143.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ec29c56347543b6a6acb6b81b75ffa731cbde3bd09dc1779b3951ca7aca335ca
+size 394838
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1144.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1144.png
new file mode 100644
index 0000000000000000000000000000000000000000..e847bd9e37715ff821594644c80dfb95fa40a550
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1144.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9c72f6f49ce7f905fe5d05896a121cea7365668fb74d213e5f21e85989746049
+size 321144
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1145.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1145.png
new file mode 100644
index 0000000000000000000000000000000000000000..f591188308185caf6fd787f742e543c99e874945
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1145.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1f8c31cefebf25b79ef6db104a7c5724e0355acaf02fab72f5437439c26f8a1f
+size 388273
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1146.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1146.png
new file mode 100644
index 0000000000000000000000000000000000000000..72cdabb3dcd17c48d46375bd93625e35dcb782bf
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1146.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6f778445cb5a4357ebf7e336f7cc7d3ed722c6e0ecdbc232e2b96a0414172edb
+size 429746
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1147.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1147.png
new file mode 100644
index 0000000000000000000000000000000000000000..6467109e2bcc36a63fdc9841dc157169986e5b32
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1147.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2e3ef1ac9c458667ae9026d62141dd20a2d2fab4deeed831a4fc1545a6de293e
+size 369869
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1148.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1148.png
new file mode 100644
index 0000000000000000000000000000000000000000..031699c69f7ef8cdebdbcf185fb20434dd553b3f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1148.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6a1a218b561f0b03e704b9a37c111964d60530f08463d17597115887a0973ece
+size 394125
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1149.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1149.png
new file mode 100644
index 0000000000000000000000000000000000000000..917a6d7bf2038785acbf9b1d84b8db0099be2803
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1149.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:09f7f41359731720ba9f52ccffa4015fe78f74e1e1991a2f4cd0057b6f0dee20
+size 424052
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1150.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1150.png
new file mode 100644
index 0000000000000000000000000000000000000000..0915d1777a728e13cf9a286afbbf6f24f979e9b0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1150.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0ed383d99fba8bf0ffbe80beb54c1ead715ca92d2ef76dc6f78381f0aaa732cb
+size 445425
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1151.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1151.png
new file mode 100644
index 0000000000000000000000000000000000000000..c13d75b3e5918f65f82a93dd2968fabe63d2f680
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1151.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0b994550de126b1ee3ebe89c997f4a931e4b4615725a4ff93ada16f463aa0558
+size 427093
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1152.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1152.png
new file mode 100644
index 0000000000000000000000000000000000000000..0afae6bd87e70772195386877d58fce9a16fa86d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1152.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:80f21d7882e061d0a802e8251f0d372f7552a8e1d0039b9cb34eaa0688370c34
+size 396091
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1154.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1154.png
new file mode 100644
index 0000000000000000000000000000000000000000..b33a26665a2053b9e41b22c8b0c81fc940bf8a3f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1154.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:956d800c2ef40f37b4569a70ad4352de732db3bb0b62e520ad715eb2cd46f087
+size 439808
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1155.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1155.png
new file mode 100644
index 0000000000000000000000000000000000000000..58af958e04bd426708065d492b01e652dc29ab52
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1155.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d1ca439218343afd4b4b3a899b69553e178c124be28659081055f6583d5e1aeb
+size 478166
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1156.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1156.png
new file mode 100644
index 0000000000000000000000000000000000000000..e7fc3d5b899efd21286ac68e6f1c53887d46ebc4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1156.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4eb147c66e976e2b46383e9627a7d27ef5a1bc394410051878363569910dab7e
+size 403387
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1157.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1157.png
new file mode 100644
index 0000000000000000000000000000000000000000..9c74ef9142acea0f3ff84f99b5f3c48644dd5702
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1157.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:105a37ac2686506c3f232210f0be8e889b4fde9b1b587a22f37e551c13805746
+size 510322
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1158.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1158.png
new file mode 100644
index 0000000000000000000000000000000000000000..722b01e5603ea4161bc0a64b26723629198398b6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1158.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:841ef5255b6cf16b7a512d5bed9d224a2c9b930e44433b66406c7744b3f5724e
+size 423964
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1159.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1159.png
new file mode 100644
index 0000000000000000000000000000000000000000..5b6d24ed4205dfdca53a2526003ba49ff71ebb21
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1159.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:63471fcc6a0ff317cd6304a3f289130817178ad351faf5be47e697912cabe90b
+size 462728
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1160.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1160.png
new file mode 100644
index 0000000000000000000000000000000000000000..9b23ee77b7401a57a9820fc3ab4a488912dcba6f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1160.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:193c37618f25f03bbd4511a4b7b977aa3fe524437ab9d22f69896a1c453d6979
+size 496773
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1161.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1161.png
new file mode 100644
index 0000000000000000000000000000000000000000..68370cffc8a1fbddeeaf8b7e86309f76c50c2f18
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1161.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7e28a8f3dd9534fbe0d2fb38beed9cc21ede73380b43367d684103c055e4bba8
+size 390929
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1162.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1162.png
new file mode 100644
index 0000000000000000000000000000000000000000..13ee7a0894eb89be648de5443368161573488bbc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1162.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d512722ae08e3c2bd640d7ec9f6d488a20067bd0bad4cae57072a0eadb5fb77a
+size 474467
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1163.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1163.png
new file mode 100644
index 0000000000000000000000000000000000000000..9d4a414a8cec309515b1f42c13ca59c9708b86a6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1163.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d0352bb645270c055dbaae53423f98fd0851eb9259bf3200e9d9811b3a02ec4a
+size 373387
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1164.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1164.png
new file mode 100644
index 0000000000000000000000000000000000000000..f3e2a6deee1819a73f5e9c1fedaf8446c848e843
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1164.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:579cb5ed622048c1a5a8ac5df1d170db16b2abb9a059d3eff2ef10daa7f701e0
+size 467877
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1165.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1165.png
new file mode 100644
index 0000000000000000000000000000000000000000..216cd5bcfa0b8bb3b062064105821ebe9af6be9d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1165.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:820663d47dac3a42f724012d043940f17a7f91f1cafac200baa8c52f0f23f183
+size 408607
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1166.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1166.png
new file mode 100644
index 0000000000000000000000000000000000000000..0bbfb58565c54a5848f34909c839552a1ea6715a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1166.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:565db100c60e6398112e1a4a488d83a663dd9dd0676786d619e0cfba5bdb5754
+size 459634
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1167.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1167.png
new file mode 100644
index 0000000000000000000000000000000000000000..ccb300251c468f684862f09f480e1132bf21ef05
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1167.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e9af0cdb6dad7c4d3e3fb6a9c9d61840219a0fc08dc894310839545ae864b5b3
+size 400318
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1168.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1168.png
new file mode 100644
index 0000000000000000000000000000000000000000..2754b0da6e6ccd18efaf050c641fbd4123d2b75f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1168.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bd3022cd31c2453468778a2faaa00a294d75c1e2db228e569ef849db96716611
+size 329859
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1170.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1170.png
new file mode 100644
index 0000000000000000000000000000000000000000..ff44314899349fc018e2becbab5af2b50848409f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1170.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:16aa7a2e37d467c4e0ddc81a53020b2ede9ac5bf5a3fa4ed13c3761aae0eb994
+size 404350
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1171.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1171.png
new file mode 100644
index 0000000000000000000000000000000000000000..c36be4b402c8847109ae816fd9883e2e85aa7f40
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1171.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0b9b656eb6ab55eafd6d5d34293041558024f987dbad90352424319ad6043ade
+size 452733
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1172.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1172.png
new file mode 100644
index 0000000000000000000000000000000000000000..1c7678a6faf3a5e2f6b3f77b7252ae1261385606
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1172.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6efe598b9a735a1da43af2de8aa545c6b1d6cb19c352dd5fab7249cb2225e586
+size 446895
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1173.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1173.png
new file mode 100644
index 0000000000000000000000000000000000000000..0cab86d81c5c58dc8482fde45b0ebaa1dd6bbc6c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1173.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0a29c749cdd5aa3e61937d55c4c02e7ca90d072a984846325a4c759c339a37a2
+size 321041
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1174.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1174.png
new file mode 100644
index 0000000000000000000000000000000000000000..a712d05e01913137269a3c44db5956bb08511bf8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1174.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:891820a4635328dfcd66a151c5975b00999d7157eadc545166d7bead3648b20f
+size 500539
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1175.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1175.png
new file mode 100644
index 0000000000000000000000000000000000000000..75364b0f111336a994aa9d7d1a8556f8893452cd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1175.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5f930ba48a41919697af4296b4c45f449f8df9ef6b886803fed4c008f1d046e8
+size 387463
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1176.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1176.png
new file mode 100644
index 0000000000000000000000000000000000000000..b0b838b257dd1c8b3a4f1faf5ee1eebe8a909a61
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1176.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:88b89014e9e78eccc0a74f1ed2089325aa46b2cff4eda8d00b8f7de3fe4ef464
+size 440551
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1177.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1177.png
new file mode 100644
index 0000000000000000000000000000000000000000..26bad9785e2b16b224327650cc3aff168a4f9be7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1177.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d57aa4321ca574f4963c545ba175b9c178f679ad2f2648ef578681b1e272be96
+size 447902
diff --git a/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1178.png b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1178.png
new file mode 100644
index 0000000000000000000000000000000000000000..db6b556519a07c9eb1eda9ee61cb4f9b6b7d85aa
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part2/Object_Interaction/1178.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8d666915d94308c446eb4d9b105d3f120c2da7a1ba4d237422ddff5847c1d310
+size 368560
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1864.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1864.png
new file mode 100644
index 0000000000000000000000000000000000000000..61230e41ac6e601c683c222dabc1c2271c12a422
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1864.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6c6ac756bb86da59926388df1e3e41b1169c08d50617d41f38f51f2cb0645087
+size 398770
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1866.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1866.png
new file mode 100644
index 0000000000000000000000000000000000000000..7c9f6ea6985bf77fbe2f5a8063376d74db68fc08
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1866.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bee9b98a250be535c2a5431c667a2d17265163a2106c8b742dea0ab6b0169fb6
+size 354724
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1868.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1868.png
new file mode 100644
index 0000000000000000000000000000000000000000..2a1a20ae52d41a289dc2f1ceb25909a06e41686f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1868.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b51b957cfb0fc8cae2669b30befa57ab6024494d59242d195614327b377cf110
+size 363101
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1870.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1870.png
new file mode 100644
index 0000000000000000000000000000000000000000..390d4c76ede1127a4f934573234e45f07476cee4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1870.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:236b00e37cce1759a8a4275d6814174d93af1ca1c35c8835636fba616c997942
+size 342307
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1872.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1872.png
new file mode 100644
index 0000000000000000000000000000000000000000..92a791d77e0aeef28e1f2563b71373e1410aa35f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1872.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fe67b59fa52c6f1e33aebbf14347d2e6fecfc1593f1c648b6f179c62a55487cf
+size 371990
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1874.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1874.png
new file mode 100644
index 0000000000000000000000000000000000000000..22522ce6cee6ea282d7f3b3f29bf0cc45cecd917
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1874.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:32cc575136c65ba155a4a4a69dc16368118c99bb1d2b623751120d1871e2ae51
+size 301677
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1876.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1876.png
new file mode 100644
index 0000000000000000000000000000000000000000..731b6c4b77bb0851fce27ee791f0c4a472dec35c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1876.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8c0e6a5396f04abb029856e64ff5328f50d1ea944cabe509ecd8516ac0abe723
+size 408375
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1878.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1878.png
new file mode 100644
index 0000000000000000000000000000000000000000..0e8ff46a7aa2e1b2041f78d9851bc0a6d9c5f171
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1878.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8fc2119c615a467fcf0bf6675571eaa7e7c529eee772962a9e6cbb2a3b577cf9
+size 341084
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1880.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1880.png
new file mode 100644
index 0000000000000000000000000000000000000000..c0eddd303ae1bfd0599e5426149040bb9742b4ba
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1880.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2387c7f786a1d1b074afae1eb7f10690c6d7152c3ed60f0a0f99e2d7c44e80e3
+size 343077
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1882.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1882.png
new file mode 100644
index 0000000000000000000000000000000000000000..1fa8a543da8c5ed66b7c9e94107b11df0ec7c813
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1882.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5067714b20e58f0e747e89dc382977a68b89109fa83f2ebdd65b363d70f1b907
+size 342136
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1884.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1884.png
new file mode 100644
index 0000000000000000000000000000000000000000..92713fc1d98160e96b2707ee1bacfa4dbf7a6706
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1884.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3b91afd3495e993052b991548b33b8c16e3d25b41f392080d5f80f2ab44b7e68
+size 357727
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1886.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1886.png
new file mode 100644
index 0000000000000000000000000000000000000000..f82156462fa5f5356786209d9e18f3c93f862573
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1886.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:06d0f1e80a2693287b1d90e88a9e9e7945aaa923b4d4e7359e294e7864214ae0
+size 351822
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1888.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1888.png
new file mode 100644
index 0000000000000000000000000000000000000000..0be5410b0c241ea65a44b36112d146e445941955
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1888.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7179c0c91678546b914b860b1aeee7ba7b0d6844c52f6beb982255315812e186
+size 346619
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1890.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1890.png
new file mode 100644
index 0000000000000000000000000000000000000000..9225a47b73d58a81d18ad5ca23dd5863b29b0b16
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1890.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dbd7138db93c5b38ca0cba036bc796277e257f91d1e76c2a2e20672a3db59c48
+size 325226
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1892.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1892.png
new file mode 100644
index 0000000000000000000000000000000000000000..486c027c40074127083cebee7dcaa0bc8ca57439
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1892.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4983555181b916cd42cbd1b07c2d6fdfbf747c415365ef33f2b0d031228ab464
+size 381001
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1894.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1894.png
new file mode 100644
index 0000000000000000000000000000000000000000..5bcf5217d975ff07a2ab92b88cb0e20d22fce381
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1894.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1a504462e04841000297a385ee8b30f5ed1664e8fdc3e53f46efeff41ffdd6d0
+size 366275
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1896.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1896.png
new file mode 100644
index 0000000000000000000000000000000000000000..01e41ba63757b11d1e58c913d17bca485ba80980
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1896.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2057b505eff8c8fae085e94ce8a90a4d5d1fd8d8f15dc71cde2e6cfb940f0de8
+size 321455
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1898.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1898.png
new file mode 100644
index 0000000000000000000000000000000000000000..c529bb26a21c551bf0865331fcb8c0bee1da7e9c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1898.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:781ae30659a7dd3bdd28cae89a74f0e98666d37407f3745f343501450bf629d8
+size 386860
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1900.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1900.png
new file mode 100644
index 0000000000000000000000000000000000000000..05a3e431489cc6ddd1b20b6266a0d7187f7da9ca
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1900.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:60ac7e3180dab95e4e9d2b1f30501d40dc345a560c1a9fd6eea1bc9011f0c7d7
+size 336980
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1902.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1902.png
new file mode 100644
index 0000000000000000000000000000000000000000..48259abd81c699662256c6d8982a9b7b1dc7c703
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1902.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bc172fe54f1d04347baae70d7db7fb7204b55d44cb93f8bb86ca381906dd931f
+size 366800
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1904.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1904.png
new file mode 100644
index 0000000000000000000000000000000000000000..63407e0da84cb029497cd631ac25a82a4c031aad
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1904.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ffc450c21e8a0ca142c5980082fadad523082d0420ea2482ef0b50b1df2ce115
+size 327066
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1905.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1905.png
new file mode 100644
index 0000000000000000000000000000000000000000..337f92eeb2c75899759c1abcf9d6bbd232678ad7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1905.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:77ea2a68424dab5fd90fb7df60d6661ea9a00cf262cba8788ddf462755018743
+size 296390
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1906.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1906.png
new file mode 100644
index 0000000000000000000000000000000000000000..e0569c5edfb3e00aede17e08b7cec2da9ceaa12f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1906.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d1ca4342f97cbd608db3e3d02d9cc5719f73e7e6e1279432b9cbd7b7b8eba405
+size 378153
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1907.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1907.png
new file mode 100644
index 0000000000000000000000000000000000000000..9c3f0ade14516a72c27bf7b9c35aca7da2982567
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1907.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7351daa162e4ebc711576eefe0656ee5f51a170e4b54a1bf11ea355dfff16b16
+size 409734
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1908.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1908.png
new file mode 100644
index 0000000000000000000000000000000000000000..bff9b3317d5514abb7846d7942dad35969ebb4a7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1908.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bab26cf7feb606180af2a860f6cbfb9f44e8b368737b98c054f93e482d027bfa
+size 396960
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1909.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1909.png
new file mode 100644
index 0000000000000000000000000000000000000000..e1752adaceb055db4cd0e45690348a41962f50b4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1909.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f4afcf591aff061a061dc456da9906cb59e533fec91097390a6320a9b94fdf87
+size 393202
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1910.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1910.png
new file mode 100644
index 0000000000000000000000000000000000000000..1aaaa3f9e85ee04ea65ef2d485ce4edc15f901e1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1910.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:419b5faac1733aeed77786c3dfe2952fdfa03756ea4e80cb6832af8b82e637dd
+size 275469
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1911.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1911.png
new file mode 100644
index 0000000000000000000000000000000000000000..5d0e8c691f11d4d0585f74a489b7aee38c36209a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1911.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8d408efa7f19dff22af815ae89cfc145a90d2ac8b12a899a164fdc0630f4817d
+size 310417
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1912.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1912.png
new file mode 100644
index 0000000000000000000000000000000000000000..1a4af517a08d85e5c9bd57789028be5f9261d537
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1912.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0068ec8d1ac2bebb12d04f69e0c064ed3dec4c4f5574d86c6258468fa8ef42a1
+size 333055
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1913.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1913.png
new file mode 100644
index 0000000000000000000000000000000000000000..66eed204a8fde4f06e4580cbde40a89c33d6ddfd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1913.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0c7cc80a39f8359b3368a32f71429491d63d8e86cdca880f78a540898d1f1251
+size 409127
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1914.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1914.png
new file mode 100644
index 0000000000000000000000000000000000000000..38671e51b463ad97bbbc77272972269f89d9b555
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1914.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a06fe8b85a4a3f047d4de3c09cf2175909c78ce3008272dbca7b3e1c266beb96
+size 347805
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1915.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1915.png
new file mode 100644
index 0000000000000000000000000000000000000000..c4582200a93c9e8a5a57e07223f46e12c4cf40d2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1915.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6dc4cd9e6235afb3b0f9c0412f4719bb732aa9d6609579cc751d9905228cc106
+size 403642
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1916.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1916.png
new file mode 100644
index 0000000000000000000000000000000000000000..8a3664422754b6a6b28962135f3678bc3f4a8b81
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1916.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a7758a0871be335bbddbfcb1873516e5f286be71d29049937d6fef0af1e7c073
+size 351083
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1917.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1917.png
new file mode 100644
index 0000000000000000000000000000000000000000..27aaedd4aeb004a4b3a3abb7af0deda6318496e3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1917.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:84ce8cb9a67c93df97d18e34161f32159ef4d0f9b479cda939ac2ccbaf8a0a15
+size 428625
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1918.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1918.png
new file mode 100644
index 0000000000000000000000000000000000000000..05aab0bf0de967284d1232ecc7b70cc2afa45b3d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1918.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1159cb88a0286fa8345f9cf07ebf82dbbbb4b5c44bd6b11917b0e2fc9d77e3e2
+size 356447
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1919.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1919.png
new file mode 100644
index 0000000000000000000000000000000000000000..b65f03fc68d5625f1d604b425e748c8c9cd36f7d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1919.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b2a3328b582ac199a7c7701ff80570e5f0fa0556b1390861d6cce310293fc360
+size 338399
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1920.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1920.png
new file mode 100644
index 0000000000000000000000000000000000000000..4381e0dbad76400069b8b4cdea57d281abad8f5a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1920.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2ae562d178220cf55b50fd385750540f113b5a6f7826014838efd5e48950fc08
+size 301419
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1921.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1921.png
new file mode 100644
index 0000000000000000000000000000000000000000..c54318eca0c6fac81c1c2fbb35d2307152b59541
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1921.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e030eb889beecad4011133ab6bbc5506bf4fae461729583c5fc8bc58e53b9ce1
+size 314431
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1922.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1922.png
new file mode 100644
index 0000000000000000000000000000000000000000..89dcfe3534b384573419fe7e4e35a8a1711088d2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1922.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bc7ebe8ed8692d5d17e771a6d5e13142e847fc36bb5080531e9a3de540c30203
+size 323284
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1923.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1923.png
new file mode 100644
index 0000000000000000000000000000000000000000..003b5763f1e28c92d21085ff0942290d33065468
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1923.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:16b4f5151a282e55541c7d592eccaf51f870bcad404cee6c7e15ace499619c91
+size 371407
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1924.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1924.png
new file mode 100644
index 0000000000000000000000000000000000000000..20af1a709610f6b6942d51f49e6e1031aba1c497
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1924.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:966053fddd0207618db68408aca0e201840b0be291c6ac53853998f858347632
+size 343941
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1926.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1926.png
new file mode 100644
index 0000000000000000000000000000000000000000..05b2c6c7ae92345183f226b0cae98da2c26d5220
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1926.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6291027cd68daa0719e07bdcb4be6a9bfb1dc8c865c41ed8be3ebd0f3f89cc47
+size 344049
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1928.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1928.png
new file mode 100644
index 0000000000000000000000000000000000000000..eb90f108e99bcdc5ed03cc50e562c4d0c97b2ba9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1928.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:82a2594c7d1b869b52c4a73684624700cbd8f2ea198714dd6fa9ce55ee23be24
+size 368730
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1930.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1930.png
new file mode 100644
index 0000000000000000000000000000000000000000..97205b533fc36f6087693e94af1055e1c7168e87
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1930.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ff32a45af425077a4bc98de870669251318f05000de7712946976e54c50dbf1e
+size 374683
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1932.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1932.png
new file mode 100644
index 0000000000000000000000000000000000000000..2c7dfc95479afb9802da2581ee900aeca2a1f691
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1932.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:331bb5b02296d44efc552ea15962c863c01970b69382ac8f9567a6eae2230440
+size 372968
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1934.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1934.png
new file mode 100644
index 0000000000000000000000000000000000000000..55a3dc21f4a8f7d82a97483430b764038100689a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1934.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3da0b97dca96f7aed0326e0e4f7f2fe50664b396e82054252c7512bafd1a1347
+size 316279
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1936.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1936.png
new file mode 100644
index 0000000000000000000000000000000000000000..91f4de46bd4813a28bb504da8e3f5210c0f470e0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1936.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ff046e37fb4eea13dfcc45292abbec228b32b69fe87131da0e8a1e1c106b538b
+size 369352
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1938.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1938.png
new file mode 100644
index 0000000000000000000000000000000000000000..88471f5a159b9c8352dcc48f46da0f5dbd2418ca
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1938.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3775c645695918d1a4459d1cf6ddf6de21b9d1e5799b7db99c41ddc093f9f9a3
+size 348861
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1940.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1940.png
new file mode 100644
index 0000000000000000000000000000000000000000..edb6785fdb57432bbd912587ed672fe131326c60
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1940.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:19bd6e55c1aac6f3db5c92f241464850b40ffa15bfbbf0c41c040d88bfdb4b43
+size 356801
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1942.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1942.png
new file mode 100644
index 0000000000000000000000000000000000000000..45330152978a7a7b65050fe18af45d9ae725e03e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1942.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b687f1ffae0b208c194fbeb78d57cc68db3376b98d58a9411d9af56e1e870a62
+size 297881
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1944.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1944.png
new file mode 100644
index 0000000000000000000000000000000000000000..27eae010cb8aa38ae4889539f3eb1e53a832870d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1944.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:95cc71ed1e57ce736462d920033fdff72e2702c35c490ada324ae1dbd30682a9
+size 366521
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1946.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1946.png
new file mode 100644
index 0000000000000000000000000000000000000000..b6c4398b011f6e342b5554917c3056b95c5d90ab
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1946.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c97af5edf642b2c78d73f9e14d6f6ca518a8c83e6df25acd2597e97c869c2dcf
+size 368753
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1948.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1948.png
new file mode 100644
index 0000000000000000000000000000000000000000..7ba8bddff6ecbc166d5d593f02885b98eb41c9cd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1948.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:312788837af2f4ede3fffa857c080a432c5c76e3973d4a477fddabf790e31d0f
+size 418543
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1950.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1950.png
new file mode 100644
index 0000000000000000000000000000000000000000..2f37cf25c76f2552b04f00a5f17cd3efccda159c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1950.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:80afec82ba855bbaec0a7b64607a47acac38fd2ec4072ae727f6bb509605475a
+size 386263
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1952.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1952.png
new file mode 100644
index 0000000000000000000000000000000000000000..c42371f787ae2cc58ad6a2ddbdcfd8e9136096ba
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1952.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1800b82d860045104cabdf4db816f57462d02ef43d9c1e2e7d0200008a5a8405
+size 396522
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1954.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1954.png
new file mode 100644
index 0000000000000000000000000000000000000000..3254133b107d8af3360f51215726c13481be4cc9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1954.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:94670013147264a9c5476c96a6c0cca502fc3c981623bdc094c468b693bd8f22
+size 355383
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1956.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1956.png
new file mode 100644
index 0000000000000000000000000000000000000000..e46eb61020680de5806dc7b06928f6034217f541
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1956.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1b09e0af63a26e8214c73e118d5318fc9014eda73fa24b6e83d5cfedaba0a24c
+size 358744
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1958.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1958.png
new file mode 100644
index 0000000000000000000000000000000000000000..c26b50f99b303c7bbba9735c1cd77edb6235798a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1958.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b4bc56d47d9ab02fdee1e7a3dee721fb66597529702a27213d7e2b6d578f00c6
+size 354688
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1960.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1960.png
new file mode 100644
index 0000000000000000000000000000000000000000..dd3bdc23275fbb568f665b72835db939d9ce40ce
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1960.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:25bc44022b13172057e044f7ba4b933847fd766c8bf44ebcbae5b2a905f5033e
+size 412519
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1962.png b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1962.png
new file mode 100644
index 0000000000000000000000000000000000000000..f5be428bad3c1ff7708a9037e81c4ba30ce9dc80
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Bag/1962.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c9ebc72509ea7fe93a0d9d992bc5a039e1865768eafa52cd944e90528e047a5b
+size 373364
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1964.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1964.png
new file mode 100644
index 0000000000000000000000000000000000000000..e1c681801ceb7b9ae4aef049e319785ebac556e2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1964.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2fabe55429a07ae4936d3dcadfc35510d4e438373d98663783e1266360bdbfab
+size 273335
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1966.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1966.png
new file mode 100644
index 0000000000000000000000000000000000000000..6b6c78d8a8ab94f992b48b91195608d46b7e15d9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1966.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:600a1971ece8a8d3188a0c03b6e3954c0687b0b02e35f058a825c926d708c361
+size 239211
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1968.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1968.png
new file mode 100644
index 0000000000000000000000000000000000000000..909074845a3645172263d0a5a3ade590d8590056
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1968.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e290a9c830f410f1ec011ebf7a60ed26d0fba66da82df16b5342d5a9ac26cfca
+size 257146
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1970.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1970.png
new file mode 100644
index 0000000000000000000000000000000000000000..27d240a1271d30a3dc7707906a0e89940fd1856a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1970.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9ea59dd7102b2400a54476709500ce6f095ac5e9b28b5ef3fe53b5d90fa8c405
+size 243333
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1972.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1972.png
new file mode 100644
index 0000000000000000000000000000000000000000..75b3bf11aed4f6c953903ce6af151bc8cc9b91d1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1972.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6c7ed7a594a24ed10ea37cd606b4daf2fd5d9e9bf32da356c99128c7d924a527
+size 239625
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1974.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1974.png
new file mode 100644
index 0000000000000000000000000000000000000000..2825d8063c65af79f64f3d8c82282ed16885c815
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1974.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:673676d689c4f058d87c56cc8b1b3b9229f2f0ad360732246accd12b155a668f
+size 279934
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1976.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1976.png
new file mode 100644
index 0000000000000000000000000000000000000000..c696dafa79f90224f24fd6011afeeef55496ca1d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1976.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d508d88655c09fdd20797382fb599b2a9d6c756acfc6e49cea4ca623a53025e6
+size 266990
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1978.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1978.png
new file mode 100644
index 0000000000000000000000000000000000000000..34be30eb4805a7d6b1d9b99096b2068f6b10f0ae
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1978.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6a5397126d043992f178fe1d66c55e72b0c8ad3bfcc48a5e4d6f70c89ce8d2a2
+size 256571
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1980.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1980.png
new file mode 100644
index 0000000000000000000000000000000000000000..80f44a80de925b4309799250db98d7b3e1545166
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1980.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:60d0b3aec3f576d9c3ed6707772c0ed6eabf55317460c3b876b2f494f03db776
+size 231994
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1982.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1982.png
new file mode 100644
index 0000000000000000000000000000000000000000..6ec62025e90384bd369cf5525bc53b4ea6fd8264
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1982.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:99f8ed368b1bc3a57ecc526bf8da1e8dd8f35ff95b0c49792d08b7a3d79b10e1
+size 261658
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1984.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1984.png
new file mode 100644
index 0000000000000000000000000000000000000000..ff1b0aefa1d45000150094a4652f7e0728cb2119
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1984.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:afc6e6c5cb0a48ea0f7b2a5fde1df410cc991e66eb77d15f115b8a7793abb330
+size 276200
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1986.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1986.png
new file mode 100644
index 0000000000000000000000000000000000000000..b7eeb1cc3f1c4a61ebdc8b71b485275b75f16c37
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1986.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:157f4a949bf1bccb1e66a4f39b96a27bb6d2c23d641f0dc43dd6582392595b83
+size 249727
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1988.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1988.png
new file mode 100644
index 0000000000000000000000000000000000000000..226b004b55b7c2be1e2ef17006dc0afe3ee3659e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1988.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b976ccf1577f5a3e3111e1ef921957ffae7ad92b14273da20a9bc7949fde9088
+size 227111
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1990.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1990.png
new file mode 100644
index 0000000000000000000000000000000000000000..7752a7170c491f852cdef97ef7d6cd59b8f766e8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1990.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4fd3b51baf2a0b52b4c2f9b83c479127e2ad3eae0af2837b7c173f672c8380f9
+size 314747
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1992.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1992.png
new file mode 100644
index 0000000000000000000000000000000000000000..989d3902513e6e6411586c971a707459e626372f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1992.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:027ac7d002d7dc6cd9608ac09113feb3de16683ad291f6fb9f531dbe3873f5e1
+size 243345
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1994.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1994.png
new file mode 100644
index 0000000000000000000000000000000000000000..2b9ff47c06aa635489f98526cfc319d4bba90b73
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1994.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e1ad2a6607e58c59a9f16e63eee16dce000804a1ef1b687cd481e1c1d168ea04
+size 284845
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1996.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1996.png
new file mode 100644
index 0000000000000000000000000000000000000000..6af8431de693bc8e92750fac3d2f0c5aa866f610
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1996.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ae3a4cc66b862a174ddf2ea9b5bcc856a34080ca4a1ebc71d434d25176e9e16f
+size 226360
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1998.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1998.png
new file mode 100644
index 0000000000000000000000000000000000000000..bdb83d145b0e609b9d66b63fa5b0861a63250940
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/1998.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4f6a20c926d69c580a88b637540e450a70b6c6ae6aec53114e71e9580329f8f1
+size 298752
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2000.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2000.png
new file mode 100644
index 0000000000000000000000000000000000000000..5cf4d4bd99d5417d47b8c8ee46595fb89c74459e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2000.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:37c5e950cfed5316c45924b690f183baee24fe130f624cc936b9842e76225c0c
+size 290554
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2002.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2002.png
new file mode 100644
index 0000000000000000000000000000000000000000..2b4822e39bbae4731f5c0cd302769f37d8572767
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2002.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a2ccbc430803d6a8df468c76714f88706428e0f4abe7624d09178cffcd08bae9
+size 302519
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2004.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2004.png
new file mode 100644
index 0000000000000000000000000000000000000000..b9f2db9b51a0846eb0cccc3a281d4f603bafd38d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2004.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3f51b514a6b6fe2916eabee7c5b9f7fba215176d432754486fa7398fc3ed4c11
+size 227934
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2005.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2005.png
new file mode 100644
index 0000000000000000000000000000000000000000..d08876dfb4d79cc48572663e56551059810ec48c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2005.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4b18ace337659cde991cca3b5df33a3a44d0827c3f493f8f91ac8c269f9f6e5b
+size 252061
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2006.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2006.png
new file mode 100644
index 0000000000000000000000000000000000000000..d7ae1b58ddbc7be63158ca8b56056f5b21145c89
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2006.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:33e6728ea1498f68734a52cfca05848b91d3082ddd445221c8a156ae0e3c3d9e
+size 291550
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2007.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2007.png
new file mode 100644
index 0000000000000000000000000000000000000000..2c0850f9ef5abb421a79b43f28c837882c6f4635
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2007.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2c34de89256eef462a6b8e989c407ef00907af696545949b1e05821ac9db8f2f
+size 296386
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2008.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2008.png
new file mode 100644
index 0000000000000000000000000000000000000000..8084debf164d6be8fcac5ecca7b2b554f719d1d9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2008.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9898f59d2b39c2f8ff09ebbfe2ad1759f97ca20d4dfd07d100e2371f47079658
+size 249423
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2009.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2009.png
new file mode 100644
index 0000000000000000000000000000000000000000..d8730e49f0b8c24f3f05deab47474d0ea461690a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2009.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9460cecf5d5361c0c96cdc531847566e8711c56498717f17fb9278a001cce586
+size 255250
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2010.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2010.png
new file mode 100644
index 0000000000000000000000000000000000000000..769f96a88fcd1816ab2134222b338396497b402f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2010.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b904421ab540d15061864341760f86c37da90fd4bf7d2e27d263b8a107e743ca
+size 283404
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2011.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2011.png
new file mode 100644
index 0000000000000000000000000000000000000000..dca200c9f0a747e04b6846632183114f3a11bc30
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2011.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b40c4b0b8312a6370fb8ecc94b87e4db8e4d1bb8c86348be50cb536d7dc2dc7e
+size 226661
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2012.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2012.png
new file mode 100644
index 0000000000000000000000000000000000000000..fde9e6c60892335b218d033c1da11dd478631a02
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2012.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8ba16cd40d833eaa7ec0bb39f86ad1736817fdfc666aedd836d25a2ca06e741e
+size 260886
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2013.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2013.png
new file mode 100644
index 0000000000000000000000000000000000000000..8264d1624d461b34a140337a58e892644e18fbb8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2013.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:00ec5622a33debb43624638d10375097117ff3cca2140081a174d4497e48587d
+size 261825
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2014.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2014.png
new file mode 100644
index 0000000000000000000000000000000000000000..9c34bfbfee95af724bfd9fe2d6c902ce945ca9f2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2014.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c7a0ddb348eaf23cde577cdde77754c5846b35cf8ec4bdc377267854fcbaa60c
+size 298113
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2015.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2015.png
new file mode 100644
index 0000000000000000000000000000000000000000..872563b34765dc592b355ece5bade1411f678bf6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2015.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e06ab98704d7d21617c95b234ef9cc7a70e2feb57298731dd44340d3c4b29738
+size 265521
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2016.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2016.png
new file mode 100644
index 0000000000000000000000000000000000000000..efe4bfb3396f1a693ff510db7fbab47c7239577d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2016.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:02266ec31ddf7e6dc15a08c3e80e8b878bdb89de2760f419aa7c6524a9d45e0c
+size 236746
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2017.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2017.png
new file mode 100644
index 0000000000000000000000000000000000000000..83132d5e5aa982691a45ae493f27717712d10bac
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2017.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df87cf03f554d3c4443b05c3bed6b6dfcec66fd87a617b6a2780ca0cf9ebac0e
+size 262230
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2018.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2018.png
new file mode 100644
index 0000000000000000000000000000000000000000..8404cca4b8783f1b32d65a7071414bcb956d8958
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2018.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e53605e515eab304fb1f8474d549e6aad743871304119dc455a282d7901c8489
+size 238924
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2019.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2019.png
new file mode 100644
index 0000000000000000000000000000000000000000..2a294dad4ac9d93698c5026fff26fe6b7091aa97
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2019.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f420bb1d0b1e13d5cde32fa3d44225ceae51e99e84e4a226e4139fd3fc42e870
+size 261796
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2020.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2020.png
new file mode 100644
index 0000000000000000000000000000000000000000..a0c4e2ad9361a545d079ca22152ad43aa0d74223
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2020.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:43a9117e02d777645ba9016ae70b3949735beb50df550dee25addbccd3694c38
+size 253044
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2021.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2021.png
new file mode 100644
index 0000000000000000000000000000000000000000..34a8de4836a1ceb7f4747922846704fbb982242a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2021.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:213b097fdbafd95c39b949a4233035e78546e1b017ad00403840c8a32b87edc8
+size 275650
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2022.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2022.png
new file mode 100644
index 0000000000000000000000000000000000000000..ce2d5620e4d77ad0e5a482f23f8e351dd10fe267
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2022.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2726c61b68824e05f231932025d738181822159baf3f9df0f68579336fbef6b2
+size 278669
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2023.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2023.png
new file mode 100644
index 0000000000000000000000000000000000000000..ce234d33c92d55b2c0c03be9e95bbdbc9f619d13
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2023.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2206e2eb3cbaca5d8a619716a5bce6d3ab12b602ab1817bda0e1161e7560b748
+size 259736
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2024.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2024.png
new file mode 100644
index 0000000000000000000000000000000000000000..2500fd5eb966a9a6cfbf3e0ebfe102247878c0b8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2024.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b6191ba716fa115fca99b60daf2a483966182bf255ed382ee5f2919d52b6f5bf
+size 287151
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2026.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2026.png
new file mode 100644
index 0000000000000000000000000000000000000000..0a771a6acd54ac7598b738c847c1bf9b4f707099
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2026.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d66c6d53c894cf704700c04985be59b78c64748220e39078809b477048fc3697
+size 284101
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2028.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2028.png
new file mode 100644
index 0000000000000000000000000000000000000000..9775df76f795b7b84f50ca1e2fbdf5935675d5e9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2028.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b077d97e15fe29e27e80410ea2943bf3c4b669882615f47caaed26bd4b489aa9
+size 271403
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2030.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2030.png
new file mode 100644
index 0000000000000000000000000000000000000000..8d334142d4cc7dcea87d0d30ffd687dfa6e08897
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2030.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:597254a853fa5a3587b35dbb31126654fadf9400d1765b2d95db17794d89dd31
+size 307811
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2032.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2032.png
new file mode 100644
index 0000000000000000000000000000000000000000..06e6ad9567e51bed0aed5100657a834a3ea53901
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2032.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:88c3d8490cc46bc5732e09cb54c68177ad5a303309d887477af41cd132b49aff
+size 251984
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2034.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2034.png
new file mode 100644
index 0000000000000000000000000000000000000000..0f099325621b80b0bb73c6c28d490b54e7914601
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2034.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:656a2531903580f8bde8e3de3964ba6b6143009392ab85a53184dd61d218f8f7
+size 239820
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2036.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2036.png
new file mode 100644
index 0000000000000000000000000000000000000000..09878b2ee79efab9783863dbcce2d078b703386c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2036.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1ee1e4bea824141c7918c575f023248a2243c1bcc90134ab3c61681d27480931
+size 247978
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2038.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2038.png
new file mode 100644
index 0000000000000000000000000000000000000000..74c6633b145927e10ddc8287259e8efe8826e3e7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2038.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dd6d56fad2393c8437b1e79f1918092fefda5630f516db629ceb2b652abf1e8d
+size 217029
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2040.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2040.png
new file mode 100644
index 0000000000000000000000000000000000000000..3925109f7a844a44647a171324b972a326aba5a5
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2040.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2a731adb036729e1b0d5e6d28041c124d3d4790a02d3c974fab25b959d25469e
+size 270769
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2042.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2042.png
new file mode 100644
index 0000000000000000000000000000000000000000..e5c2b61b0a70e0eb3e2f306ac5e43c38c60e63d7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2042.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:22eb0e539ffd451ff6f061519759793bae9d46af3b7ae2e44009d63733d28f15
+size 258257
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2044.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2044.png
new file mode 100644
index 0000000000000000000000000000000000000000..2e50547f683420b90c95f6b6b007f8a528013eee
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2044.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2944a384662133121f308451228c498ce4e12aab099facd72abf4a5cbf88c57d
+size 239911
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2046.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2046.png
new file mode 100644
index 0000000000000000000000000000000000000000..ef56619ee6acfc8833a298a689adca6f4cce1de4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2046.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2d1c4e5514e2345ed448e9c83a05d48579c797ff8db0c9e9d9fad087cb1dd14c
+size 293472
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2048.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2048.png
new file mode 100644
index 0000000000000000000000000000000000000000..71eec8c9f86b5229ed048b410a18f7dd08c8dcf1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2048.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a00b3acd479c9296c339d399c1fcaa18bab0edd76cb94ff9f700e42ec91e981d
+size 287653
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2050.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2050.png
new file mode 100644
index 0000000000000000000000000000000000000000..00d75cb68acf2dc62915cef6cc9df5f1b64302c2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2050.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1a8ee29d689543c19dba8cc37ba09afaa1e2997d56c43b5adef4e832e0faae90
+size 266057
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2052.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2052.png
new file mode 100644
index 0000000000000000000000000000000000000000..2556f3e2d9608b32facf72a94c138c43f70b8718
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2052.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c8d25dec01483ece1269fe1f2c998fbb1621ade6120270534519a9d98ca1738b
+size 282818
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2054.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2054.png
new file mode 100644
index 0000000000000000000000000000000000000000..8062a3d3c446d444e4fd6bf0404aaedc51bbed8b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2054.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c4b3a071479885e2bf30c2fa8a1d1decbc4bca05423c13191b4c9cb272fd8875
+size 251648
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2056.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2056.png
new file mode 100644
index 0000000000000000000000000000000000000000..185390b3088e966741fe36e64f7f8c4ff36e674e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2056.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:87a58f2ae6ed02962581165bb669956a0250a583df8af3b48005c719bc260756
+size 270385
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2058.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2058.png
new file mode 100644
index 0000000000000000000000000000000000000000..c7fa9e9f2e596293d6ebf7a90d5abfdcb60deb41
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2058.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6519d08ec2f8227355ca123d68f0801f3c07f752bcce061622e0c8c60a08c068
+size 267963
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2060.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2060.png
new file mode 100644
index 0000000000000000000000000000000000000000..99c8c92f14b3a676d748096f48f952d0992277b8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2060.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a64c4b4b5b531de4b0aa56b7713638fdde65ffc876efa4f2b7e627ea99bf486e
+size 280418
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2062.png b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2062.png
new file mode 100644
index 0000000000000000000000000000000000000000..f7e5eb4495122ff8947e611f7854c524e08ae204
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Convex_Hull/2062.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b436ee4561237f9a6e5599a1283706d07a7eeccb5b10585afb40aed631ad9502
+size 261130
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2685.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2685.png
new file mode 100644
index 0000000000000000000000000000000000000000..859bbbc915668d400523b6ea6cf2684b8cb5fb18
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2685.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6248e5e96793c3702697d630fde03f4368e39fbcc3cea61a2fb7ca52402f9742
+size 343338
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2687.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2687.png
new file mode 100644
index 0000000000000000000000000000000000000000..0d19db9e2a0c02f397055275d56278ba1d231ddb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2687.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1b3b1a63b38e7f15f52a5a1845c5cf3792d32d00f9b3db576b37d604cf574087
+size 354829
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2689.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2689.png
new file mode 100644
index 0000000000000000000000000000000000000000..6fc3d60206e7a260a20bab402b8096670f28cc85
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2689.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4ff77b1153acfea2d656ae1c710de4110438b7371f8c2e17fe0e163c07acd3fe
+size 372811
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2691.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2691.png
new file mode 100644
index 0000000000000000000000000000000000000000..092b7550b060c98ca89e4e4a54a5ce8f0ba51418
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2691.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d969a17bf9a9dcc5d34f629728cb13a4553718fa5d09c861ed928ca445846932
+size 395705
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2693.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2693.png
new file mode 100644
index 0000000000000000000000000000000000000000..5dda137368e36f1262a6fe2bc81103ea9d65a0dd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2693.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ee9a8467b842249cdb06ddd088bf5277cb877fcd742638a0124eda39d1a952d5
+size 415240
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2695.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2695.png
new file mode 100644
index 0000000000000000000000000000000000000000..7175c561b2cb354cbfb484321238cb3dc2325a53
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2695.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5b59dfbaf5bc2b63a108d767f046f7f881b6c5ba89ea104119d7f633801edf64
+size 439922
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2697.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2697.png
new file mode 100644
index 0000000000000000000000000000000000000000..c2fef009a965ec33a5d780e97833cf2e1c87ea5b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2697.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b0002d05be2ea48dca37aa15f8b5079beb564b1d086a47b3d778f89a63e677cf
+size 339686
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2699.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2699.png
new file mode 100644
index 0000000000000000000000000000000000000000..db400abe33f9c6c5fa55087c50210549475084fc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2699.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:628cb356c92155d41dda680a023206c2677649890de87fe71c63ba3aa4c7c747
+size 326298
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2701.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2701.png
new file mode 100644
index 0000000000000000000000000000000000000000..04c84a422a4d5519e77a23ef43dedb988c5b25b7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2701.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:edbd375d40e7d51a459ac9e1a4ca00cdb67049a8c5a87e0dcd059c20daa0a3a8
+size 389037
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2703.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2703.png
new file mode 100644
index 0000000000000000000000000000000000000000..d0fa762cf3475fe2e24014e6c5781cdb05009b4b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2703.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5c440f9f934e3f085695adfd7e05690593333f47b1fb5b9362f732051e45f4d3
+size 385531
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2705.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2705.png
new file mode 100644
index 0000000000000000000000000000000000000000..b3f3a45b570c93820219bd7dc1f0f77d4c9d71b5
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2705.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7aea026b0a56c7bab89a6b00a76496283114af0db27fa73fb5956b26fd8dfd20
+size 499542
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2707.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2707.png
new file mode 100644
index 0000000000000000000000000000000000000000..eb44eca26af3ff31a722e4131bee5f04abea2130
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2707.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:22c4a1fc887d4543325180089042e493a26833071d78f579bef54b43e0bbd525
+size 502250
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2709.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2709.png
new file mode 100644
index 0000000000000000000000000000000000000000..c065bdd7e6afbb91f89bf1216053f03a17532cfc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2709.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:58dfb1424f4c250a3947b7009ce888afe2ab3ca464c172c4439759a9774862f3
+size 391628
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2711.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2711.png
new file mode 100644
index 0000000000000000000000000000000000000000..e65866adeb7ed74c8616e44284949c30a1f30b02
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2711.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ce8892de2a8d6300c3ab15932b2409cac7bec96a9f83b20e8adbaa69c6448001
+size 531246
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2713.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2713.png
new file mode 100644
index 0000000000000000000000000000000000000000..97435df424fab864cd5693e77689bffaf3974e87
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2713.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8a5da6c797654407235467ddea497155f00494c7bc27bce4d0ce4705434e9442
+size 537514
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2715.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2715.png
new file mode 100644
index 0000000000000000000000000000000000000000..a5c0fe13669ceee29f03f0af0918df1b1f18b296
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2715.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:53931a4ea9911cbaf1ddbfc03fc2d8244319a02ef9488ab1bc2a97123b25dd66
+size 430825
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2717.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2717.png
new file mode 100644
index 0000000000000000000000000000000000000000..cda0e4d60b4fc7bd054fde7b8e47dbfb9bd26b69
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2717.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:877ff1d27bf439b62f74951616f008081f112efb294b71bc078cded640056afb
+size 505853
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2719.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2719.png
new file mode 100644
index 0000000000000000000000000000000000000000..3babfbdf57159c6a6183c543b673cd11eb14fadf
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2719.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:559273535aae201b0c258c0ca40b27afb7e86af09618f96d0d1c8c33f46cc8c9
+size 492200
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2721.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2721.png
new file mode 100644
index 0000000000000000000000000000000000000000..07d093e5641d1c553a47dac345311c4a483a1c4e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2721.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dc008e7dba88ac63753f5ab12803c39f1c4d5c54de49892a5d6b33235784cdb6
+size 395089
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2723.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2723.png
new file mode 100644
index 0000000000000000000000000000000000000000..0b8f7dbccf67ce4ed752d1dc1fa760ea92a0fd5f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2723.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c70884af087809f4f73b33fa3aae9e7652a9b865316434bb7aec237fec765571
+size 505016
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2725.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2725.png
new file mode 100644
index 0000000000000000000000000000000000000000..721811fe6ef736a502bdbd692cf8fa301b7aa096
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2725.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a991e5f3d7a60f631dc6ed7be8f3538773caae21a59b6eed513afbc3cfd90408
+size 472423
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2727.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2727.png
new file mode 100644
index 0000000000000000000000000000000000000000..86b63c7d4a432b1bdc024bba2dbe4ed4cccf53f3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2727.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:565ddae4d9049322172184c1cfafdb1d4ad10c59e7b3b482616293fcc88df907
+size 530255
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2729.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2729.png
new file mode 100644
index 0000000000000000000000000000000000000000..c75eb001b8b82b4a874e6ebf9963cffc41074d02
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2729.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f8940f61d98b82f942e03b14d9d9be0d0f3e523f1bddb573456fc40054faee95
+size 532686
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2731.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2731.png
new file mode 100644
index 0000000000000000000000000000000000000000..f367b475ac582da01fcbb3f043e254a9ff50b899
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2731.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2f760953dd2b8ba875d759fbd88a9d0cb82dbf9fc9e294de86710d539df70307
+size 434414
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2733.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2733.png
new file mode 100644
index 0000000000000000000000000000000000000000..d2cebd00cd3ef84e8014930d848e31d3081d88dc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2733.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0d317979951097299120059523eb2ad0b86b005acc96556c6e5ebb52e761508a
+size 403638
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2735.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2735.png
new file mode 100644
index 0000000000000000000000000000000000000000..7ebed1e44dafec9c9febbcfd85bb99443fecb474
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2735.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9094ef3fdcefb324b93e93f9df6811b40bd28e7597eeec5edb9873e219761361
+size 501602
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2737.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2737.png
new file mode 100644
index 0000000000000000000000000000000000000000..5e9a1388a3e99f35f53835231be42d2522b131d6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2737.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0737ae1e2a30ca93d5f58477060a1805509b10a36a30c8d78dde40587f555613
+size 473707
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2739.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2739.png
new file mode 100644
index 0000000000000000000000000000000000000000..e40f725c8afb8736bd39375edcf72013203e3a66
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2739.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:723ab1db1f7034758874baf10f8f7e93381403e819967678e5b865b4557b14f6
+size 476078
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2741.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2741.png
new file mode 100644
index 0000000000000000000000000000000000000000..dbff77bf4bfc7065c328c25497d338ba1c01b8f8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2741.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:595eaa936701ec0398540e71609c6df21103f4e3fffd2a84271cdeb712d17ade
+size 446878
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2743.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2743.png
new file mode 100644
index 0000000000000000000000000000000000000000..dacf71548382335d77295f535fa268efc48b381d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2743.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2b1b9cd7932bc75377c72eb8268ec547e709db0cd5301ba88d0423a2d58211b5
+size 423165
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2745.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2745.png
new file mode 100644
index 0000000000000000000000000000000000000000..36feef4450a42f0fb0173a9749d8555581754cc2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2745.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:abf7c27173e37f019e2d52d33438160af07f273ec174ca12da8aff154f3db81a
+size 436505
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2747.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2747.png
new file mode 100644
index 0000000000000000000000000000000000000000..7e60ecd8500dcc04f449b66a54d525d308c42410
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2747.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e1dd3ffb761da7dabc7586084a71ba3d6962c341eecfd4e49c5326affabde2ea
+size 443759
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2749.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2749.png
new file mode 100644
index 0000000000000000000000000000000000000000..e21b426f35dbeb7f203ec3a7a5d4d0dd24fc69b8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2749.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a63df0bdc015e97a95c37b6b8907b59d2531992f582edfeca86a0c6ed4c85b54
+size 481695
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2751.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2751.png
new file mode 100644
index 0000000000000000000000000000000000000000..c9df82f646be50f40ad611def14cf854897d40a1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2751.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e7c04763d81d3f403ba7193cb8bda789e6000377a4bf0260ae431923c96225ec
+size 413151
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2753.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2753.png
new file mode 100644
index 0000000000000000000000000000000000000000..7b17cbad30428c53f7e436f8bc9c42f12d50a5e7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2753.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4e0af92ff314ddf17d9cb2a85a84c2b4ab8dd09c69a530a6600aef0a0ede80ca
+size 464355
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2755.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2755.png
new file mode 100644
index 0000000000000000000000000000000000000000..78ff3672d39bec6cd1a2c1c7ec36a65026becc5b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2755.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:55e3fe77ddc08d18cad574a441034ba602dfe6d35ddaa1cefbd1d867efbef4d3
+size 478904
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2757.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2757.png
new file mode 100644
index 0000000000000000000000000000000000000000..0af45c52070b74ddbcd8d10cf8b78d4f42dd5a95
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2757.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:28cf0f8d9a27eeded12710f9a016f2f9b4e3616d5ecdd7f80a2598f6d9826e84
+size 404090
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2759.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2759.png
new file mode 100644
index 0000000000000000000000000000000000000000..2c4d37fdcf3aca0c45e831116502c93c15c20335
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2759.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:587da984dbf1cecd2930c55da9c9f8f199c2c70074f4025fedb164344931a19b
+size 519515
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2761.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2761.png
new file mode 100644
index 0000000000000000000000000000000000000000..888c4ed25c6cb8c2429c5b05df1a8434cc7ec052
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2761.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:48aa43aa88734d24030b5cb477e9356d0e54b4dd01532688c1740c628319cf95
+size 505894
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2763.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2763.png
new file mode 100644
index 0000000000000000000000000000000000000000..485937c0b9fcf20a6ce728c9d45bc1bf21a56014
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2763.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:13de4ef8fb91ca85f61b4fb60d6c8cef45e7c484f19e0e765a2913a431af3fe3
+size 521208
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2765.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2765.png
new file mode 100644
index 0000000000000000000000000000000000000000..53fc04e6805911a9d0340927a468e4661823e76e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2765.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4f9f2dd1ca48437a868733c071e81936d9e5eb714d3ae271ca392ad7b86edb96
+size 490649
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2767.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2767.png
new file mode 100644
index 0000000000000000000000000000000000000000..9f857860f18225df063ac1f6a396d7055aff81e5
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2767.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:552bf7619a6dff48036d8a6fb201850fc00f2a91fc4887d86accdbc9606b3e49
+size 507752
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2769.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2769.png
new file mode 100644
index 0000000000000000000000000000000000000000..7eac054c02b150f3c195e966e7135a89e8a59d51
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2769.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1694ca5422a6858a372576dab33d3a3041c7a7b7086eb714d52cd052cce399f2
+size 483398
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2771.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2771.png
new file mode 100644
index 0000000000000000000000000000000000000000..28e468773c946368f40c7381f6dbc4252d4299ab
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2771.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a11feb222469028359202f3bc3b10f121645dfafdad6c8031777e5b42dda3d6d
+size 470899
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2773.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2773.png
new file mode 100644
index 0000000000000000000000000000000000000000..ef5269f246029d805b9aad909f8a7a8ae7867aab
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2773.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:80f675084c6b3c05858952293c0f59207efa7e34f3c45f3f1d8e1b178d20bda0
+size 504644
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2775.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2775.png
new file mode 100644
index 0000000000000000000000000000000000000000..3d464bd83786a65be3af5d0c61da897cb6bba72d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2775.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8233e607c7268cdf297b7a2e7e27e8ac4be0d52a78fbdc3ad3e1c53b39c11665
+size 466240
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2777.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2777.png
new file mode 100644
index 0000000000000000000000000000000000000000..d43a2537b1582cce740c7062c78b3ba43145e6f9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2777.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:149c6bf5b9d691a3e1334b1acaeafa99159daf6d1209a074292a45d95525f1d8
+size 514773
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2779.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2779.png
new file mode 100644
index 0000000000000000000000000000000000000000..7a6e6c9897e6ccae983d943c02ba44850e340b5c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2779.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:266e252f28f2894a08224d1efadbd491be3f1d35dd86f4110beb80e0657abc00
+size 482015
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2781.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2781.png
new file mode 100644
index 0000000000000000000000000000000000000000..810d8fc66543867d159156c49b09e0156cebbcf8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2781.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c131c7ed2aeac5138c883749a00a0a5f9655b74c3f62713234264bc33d98a414
+size 466028
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2783.png b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2783.png
new file mode 100644
index 0000000000000000000000000000000000000000..c3c526126b2c35ba9d5e0ca70332713fc3f086c7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Find_Word_No_Start/2783.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:560e42c6fc339a93cff0bf7c8d15fbdb82df61c2905098cf0671e682d3682d04
+size 535936
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2164.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2164.png
new file mode 100644
index 0000000000000000000000000000000000000000..6e72bb7f5580eda788cb50aee2dbf2f7b5249b2b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2164.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:26abefd749e4e3cc734de34bd08009cc66180f622f85e7c8d711d1fcbd9d8b9c
+size 315149
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2166.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2166.png
new file mode 100644
index 0000000000000000000000000000000000000000..1acf978e7331483f2af798721a3ee1da194ae277
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2166.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cc15ced20178068c6a97c1055c2dc726a4385d6a53e6ce99bf5a70f92e3feb45
+size 392102
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2168.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2168.png
new file mode 100644
index 0000000000000000000000000000000000000000..95caaa86bd93e99fcc4b26a3ab8a66cfd63ef4b3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2168.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b534b2d34ab7013929857f2784b0c2f3179a94741d06a69f9c85df198cabea0b
+size 354129
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2170.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2170.png
new file mode 100644
index 0000000000000000000000000000000000000000..e4ecfad7caece11d3f38710a8fdc416abf302dfc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2170.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8be36480b4902799760ecf1602f72a5fee97a3dae74e412f3e6c28ecc06768c8
+size 469963
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2172.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2172.png
new file mode 100644
index 0000000000000000000000000000000000000000..54a4d3e40ead525910c94d3d7d412c2ec7e125ee
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2172.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:150591ddbe99fd90d1d09c9c00461d51c54bacaeef72fd90bd2d771e07d3a47f
+size 405157
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2174.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2174.png
new file mode 100644
index 0000000000000000000000000000000000000000..25c4b1dc7d9ca323f6530076b51abec6b35bd2ca
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2174.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:467a905162804900ec9fdb67e216501635390ef07fe8d74b67a1fcb293f98860
+size 497772
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2176.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2176.png
new file mode 100644
index 0000000000000000000000000000000000000000..7c7b5947d31ae69d4d8b76865b62019bdb09567d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2176.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b00cb1d0d267fc34514bacab6e95b3d5035b3c67d7fb96dfdab913fa91db3d93
+size 370435
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2178.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2178.png
new file mode 100644
index 0000000000000000000000000000000000000000..b614de7fe67b5a99e1c1c5e0339e84c85f57027c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2178.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3f2ff7ccb729b63e0fca96db3a1be09aa02e6d701860cc7e9e75bcc7f95df57a
+size 382440
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2180.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2180.png
new file mode 100644
index 0000000000000000000000000000000000000000..46b411f054ce83ff32457bb339012e672d8b02cf
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2180.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6f94887e7a1fe11ec122df41c66657849e0751f2cffc6ed6c9a82159efd21aea
+size 389446
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2182.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2182.png
new file mode 100644
index 0000000000000000000000000000000000000000..a3e217b254a86e6ab7cc76c7b5af618ff27fb303
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2182.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:714ac84eee94573fbdf96a83163ac8d494af644f4b0425785f73989abcd5306c
+size 460841
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2184.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2184.png
new file mode 100644
index 0000000000000000000000000000000000000000..7078880359493a88219cc9c5ae695da73d3c3cb6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2184.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:09c3213e06ffdd5d294074449b91a5c449cf444c343d8745b65f896f4783df6e
+size 366510
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2186.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2186.png
new file mode 100644
index 0000000000000000000000000000000000000000..f7cab260be877e2d07e25a4afd9da5587ca10eba
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2186.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:918f52fda54c3d4d102edeb2c2249e9f9434f64117f55d0a10efd07b1dfef74c
+size 494074
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2188.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2188.png
new file mode 100644
index 0000000000000000000000000000000000000000..b5ad8846fd606575a9f59767e9aba54b18d02585
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2188.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e85dc9b85e4379870815ed1aa160e23e59c1721c63ea795c548d84ce0ea5e8d3
+size 341197
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2190.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2190.png
new file mode 100644
index 0000000000000000000000000000000000000000..17cbff452b64e84a5d9622ca7bad523b5a8583d0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2190.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:63f4105dcc6df746a11ee7f6218f308eeea3b37cc697bbb285e7d67d7fa8630e
+size 387659
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2192.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2192.png
new file mode 100644
index 0000000000000000000000000000000000000000..cf34afc9024bb51e57fd9033e4497ba4caece86e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2192.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:429dc5d1a96dd62101ec604acb1606daead89c80c38cf308efd1fb21dd5b0435
+size 423089
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2194.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2194.png
new file mode 100644
index 0000000000000000000000000000000000000000..188221657d414431a6a255234d83aa90047e1d6d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2194.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:54d962e15168e4a1513e1b31b086070a0599a97abc427e448083335b75e4620c
+size 377232
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2196.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2196.png
new file mode 100644
index 0000000000000000000000000000000000000000..881cd7ae2cf49cf31f9eb0624182470d93f4a57e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2196.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:671c1635377f459756c107294b2636abcc52f12baee0b0fdd476f365b06e0f77
+size 446118
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2198.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2198.png
new file mode 100644
index 0000000000000000000000000000000000000000..a460bdca659a01b577ed91fc263f5da602f788d8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2198.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:98b4884fd621448e093eb6effae5b2c518ea90be1a17d0dc6ecefe3df7872db1
+size 433405
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2200.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2200.png
new file mode 100644
index 0000000000000000000000000000000000000000..1780909b9a145d76b660fde26d4e4e2a5ef815c0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2200.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ba7430b2841cc3c8e931688914fba2c8625301a6aac993b2057a7090cf0823f2
+size 499098
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2202.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2202.png
new file mode 100644
index 0000000000000000000000000000000000000000..4e072b9abda4ef8fa0ac27a6db484251a8637dc5
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2202.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d555c3671d2a4549ec070de2832d35009cc0d307110508775d5d53f435dbe9ee
+size 465506
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2204.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2204.png
new file mode 100644
index 0000000000000000000000000000000000000000..655ef4e4f527a6765e605298c1c5c8f256f7a229
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2204.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4c3b8fd4cafae6eb03f55a86945c184fa916161deda8959415b77704ebf21624
+size 486870
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2206.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2206.png
new file mode 100644
index 0000000000000000000000000000000000000000..5b795b11025a6211c5f3b18bfc2fa818346941f2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2206.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:efff3a284046d5634dbb486eed53fd9a8caf8f3361731998f1492a7f3b3cfbab
+size 405881
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2208.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2208.png
new file mode 100644
index 0000000000000000000000000000000000000000..b428a7c25ad4c56df3ff813fdc40789228132ef6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2208.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7b3c59b04209548069a18a7ac32141abf22a3efc5287f468ea8ae3796258dd0f
+size 403188
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2210.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2210.png
new file mode 100644
index 0000000000000000000000000000000000000000..6a3e957cbe6849a17db2e96ef88609e0315999cd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2210.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2ea64cefa11f51da6ab9a70aa8eb84358031c5840302f4cdac92a55d83386451
+size 458915
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2212.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2212.png
new file mode 100644
index 0000000000000000000000000000000000000000..4e8dae439722a670f23ec41afae07401252dc170
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2212.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d22ba5a9101197e9fe1142cbc9703548c3b0a189db2782fd94d59252477f0e96
+size 355742
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2214.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2214.png
new file mode 100644
index 0000000000000000000000000000000000000000..4cdf43e3b437dee2fc932f7b5cb64c02dfcb0798
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2214.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:45222541fa4075de6b4afcff7beaca4d1fd0828dba6240ea6dab1b2324497e58
+size 474615
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2216.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2216.png
new file mode 100644
index 0000000000000000000000000000000000000000..5410e5727969f1adfc28998a903d787e0770c4c8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2216.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ce1773e96c3d928275285b06f08611fa60025a6aa56cd67059efe26d3954b073
+size 445245
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2218.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2218.png
new file mode 100644
index 0000000000000000000000000000000000000000..730aeece965b5ec42eb70c6e023d2c379437acd2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2218.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c541b82f17fcaf865a4646f786f8b16dcf95ea5f236ead0ea2f38ac81aa44cfe
+size 465061
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2220.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2220.png
new file mode 100644
index 0000000000000000000000000000000000000000..d5bb0ebd65b3c8e61dc86ea634026cd5d79c3d5d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2220.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:db7e16cec0d391c4936ae7745eeabbeaadb5e7ed8dfa734086ddd247809b60b3
+size 352626
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2222.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2222.png
new file mode 100644
index 0000000000000000000000000000000000000000..a34ee041d171b770dc9fad216c36ff9addfad796
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2222.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9cc566efad5b89b53e381d6ee332563fc9e18d1137c548addefef3de1bccd24a
+size 444135
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2224.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2224.png
new file mode 100644
index 0000000000000000000000000000000000000000..765fa9c00f50ab646e4e9434456c97fee1cdf668
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2224.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0a367b802d185315e7c9d0b617f0f19981d6fa5c9dd01e6303d247d64e597bec
+size 395060
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2226.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2226.png
new file mode 100644
index 0000000000000000000000000000000000000000..ddbb453f53d1490628e0eec1d4dbf8b49a406d86
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2226.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ab7e91f12fa6849b5898201bd483ec4976bbbb6eba9c3d70cda6b67b26a7b623
+size 421339
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2228.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2228.png
new file mode 100644
index 0000000000000000000000000000000000000000..f568a6078adfb1a7faea78c9ecb47dbe5e7669ab
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2228.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4216d897e6002acd588654a5d42f39c69e279c900e14d54d766d3de063f851d8
+size 308022
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2230.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2230.png
new file mode 100644
index 0000000000000000000000000000000000000000..3d686cee9c38c5a6565657d57f1183de48fda03e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2230.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6184943d70eba7a5b3a81bd2897f7687d4419f7b2a689298d7fef9159980e7a8
+size 403165
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2232.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2232.png
new file mode 100644
index 0000000000000000000000000000000000000000..20cd0e4974fa35b84c0e41a86a631870d9ccdbc8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2232.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0c00348e8c0f70cbc73caa44793de9ac596c84608c1506dea5a0175b3f1f4850
+size 347403
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2234.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2234.png
new file mode 100644
index 0000000000000000000000000000000000000000..592c11b37f79ee65616760244c03b6330dff8010
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2234.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bdc0ee1320c229b1ed6b0d087c8cf8e37194dfbf5efef0c84c2887b4f959eb89
+size 386469
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2236.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2236.png
new file mode 100644
index 0000000000000000000000000000000000000000..f905cf89d298a87bd241ac8c03c721e970051eed
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2236.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8002ce3bf2e935f6c71dd9a1249fcdc0afe7d313390fab41bde97213a81b08af
+size 397512
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2238.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2238.png
new file mode 100644
index 0000000000000000000000000000000000000000..b864e85532d2b1fd09f7f3624c4bef559d8be9cb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2238.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1c2ccd56c65ef0e1eef2d1909eba0fb0a8f2b1e2c7517a08f425adbc533792b0
+size 364572
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2240.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2240.png
new file mode 100644
index 0000000000000000000000000000000000000000..c21fd092a339076db981f16a14bac5c960bef659
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2240.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:836d0fbe8cc0697df33b60f20af8948eed35c4ad26a35ccaa6c8a57dc0a8114b
+size 324793
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2242.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2242.png
new file mode 100644
index 0000000000000000000000000000000000000000..45db340341e8e35748de01bca4ffcc40b1a77d12
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2242.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:127208917eaef125768774249d8100f3f234bb199e99dd976721a92997b22e47
+size 448178
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2244.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2244.png
new file mode 100644
index 0000000000000000000000000000000000000000..594f99adea2c19f26df1d8c00c4a33e6133cd518
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2244.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4fa8aa978f78146572e025dd7dc09d974211d99edf086a3b3d689f151bceba7d
+size 471656
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2246.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2246.png
new file mode 100644
index 0000000000000000000000000000000000000000..f71111222d7e3321b758e64271a17a7a5e9cba6f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2246.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5dcbb24c9f1cc01e9fad3b77883e3d895f0a1e6778646b144e30ba5dfc46cd5f
+size 476008
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2248.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2248.png
new file mode 100644
index 0000000000000000000000000000000000000000..f86d3c1ffacac182d6e5acb22d81d7f141a08641
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2248.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2976a1cf62ddf1a03a36f18399031c210dff830c7bd094e8966e136d9c778126
+size 490100
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2250.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2250.png
new file mode 100644
index 0000000000000000000000000000000000000000..b5313132fe43921cdd00dbb15271dbcb2a7fd5b9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2250.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:760dfce3e5350fede5696396179eaff5a89ab52f7f01aff7a3671a22ac4d301c
+size 409222
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2252.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2252.png
new file mode 100644
index 0000000000000000000000000000000000000000..01d46bf69621b17d6dc8291a6328ded20da2d0a5
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2252.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a5cde183de0a179416d2526d52d60c4d3ffba20b3302ed608cb94f55546db3c6
+size 455431
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2254.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2254.png
new file mode 100644
index 0000000000000000000000000000000000000000..e7426a84efee0a54864e3647334f2a0798b82e8e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2254.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:73aec2493ca006eaea6cc8368f4a74a576c40012cd9c661858f3741dd7c8731c
+size 405561
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2256.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2256.png
new file mode 100644
index 0000000000000000000000000000000000000000..1a84100291505cb731cd9f2169a161005b231b81
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2256.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f47f20863c61cbc3b1e13d2521b8f7e96cc59b978f723a45346490a87ddbe7e5
+size 361148
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2258.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2258.png
new file mode 100644
index 0000000000000000000000000000000000000000..905e0d796b429ec672107dbac51be7ef34fda291
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2258.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d77ef1cf42ed4752fada9d0910bf17c9b16b9865c19fd73ec6c4cb060a5b3aea
+size 453639
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2260.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2260.png
new file mode 100644
index 0000000000000000000000000000000000000000..18cd8f332fe1ac432746e652bf2df4c529cd02ca
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2260.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:25b9a60de926dff647c7243b159f938d78e33205479c78661410468ee8f72562
+size 333100
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2262.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2262.png
new file mode 100644
index 0000000000000000000000000000000000000000..3b894b0bdfc1a1c637697f3397bd7cb7899cd5bd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_No_Start/2262.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:938fc0c0ff20ed27ea953032fee4d8eac0bd4f851d211d0d24603163f23e973f
+size 423487
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2265.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2265.png
new file mode 100644
index 0000000000000000000000000000000000000000..4068f7eeb7b525a0177fdc3b1a06c9808e2b5503
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2265.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:848150123c370958628bbcda302a9aea27885ba3afb7a9d6d709f30f311258c3
+size 506855
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2267.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2267.png
new file mode 100644
index 0000000000000000000000000000000000000000..482cff7ad169e01bef994bb7a030619df3d3fe75
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2267.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:04275ac01bd758021b733184b39997875623789a7c9702b4bcaad9a5534ad13c
+size 387689
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2269.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2269.png
new file mode 100644
index 0000000000000000000000000000000000000000..252283dc9d202fbc8f1d77f5b2a05d41ada82ef0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2269.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0e7713e72507dd6959879513997c49ec8bdf94a0658c997e80e093351ca616ef
+size 519315
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2271.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2271.png
new file mode 100644
index 0000000000000000000000000000000000000000..3fcd89d8808bf69f6415ea11434f9154d5f0cdd6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2271.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f6393d651dba1779eb0d093138f502a900a8742299c40c29730c3fe058e800da
+size 483038
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2273.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2273.png
new file mode 100644
index 0000000000000000000000000000000000000000..5a46185f58bb0471e6268aef8d7f88719d36d70b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2273.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4d1a180f377f9b541f22095b085ad97126a2eee288af0b835f05607f53d94fab
+size 477462
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2275.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2275.png
new file mode 100644
index 0000000000000000000000000000000000000000..f9dc0a47becf321a17a06a557dc45b000ee6ad0a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2275.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ef8aafa872b3104fcf2c83e0dbd918b4330616487cc4204747f83c3987749233
+size 497217
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2277.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2277.png
new file mode 100644
index 0000000000000000000000000000000000000000..a5d47ae45dfce7b829cc8fab39f01eafb6d81ca1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2277.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2a12b1e153f8d262af43b9e042b13ac9bddeb14208623e9baa4e5591c5db0c97
+size 509157
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2279.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2279.png
new file mode 100644
index 0000000000000000000000000000000000000000..d36b45d4167c8479d1d8ae1be39d537110c9d356
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2279.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8342651ad5e4e384ea8443ef2b9d7a22b77be01f233c4016733296694ae04cd1
+size 466455
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2281.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2281.png
new file mode 100644
index 0000000000000000000000000000000000000000..1a3c3da5e5f6747e99a643336ecf1a159d5720e7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2281.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d0e5457a13dec2fa7b1612164f4441d5866b4939e81276fdd8bc3ae34d9fb946
+size 443965
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2283.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2283.png
new file mode 100644
index 0000000000000000000000000000000000000000..f94781f87ea83057e16d9e61d8a091e0db5c0f17
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2283.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c994f0230e54a26ef7e26ae531bad5686933274ebcadee9acb349e82118159c1
+size 501186
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2285.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2285.png
new file mode 100644
index 0000000000000000000000000000000000000000..dd95e098c9b02ae65cde31d82284b8f51ca1b970
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2285.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:33033f15c3c0ee3fb8baa5fd03d1e484cdf0858346adec5a9e1d2c1257f4e0cf
+size 489830
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2287.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2287.png
new file mode 100644
index 0000000000000000000000000000000000000000..6a5aa6e0988156e05ee734076c9c11ae1b7a7c77
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2287.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e34ed2cbb7d5149725c2e33b79a640d13773414875be25e01a04ebacfcfb27a3
+size 460710
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2289.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2289.png
new file mode 100644
index 0000000000000000000000000000000000000000..9a5ff8cd8169f6c4d385cc3f4a30f2481615378e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2289.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:986d0f44d0b4247bf78c3c41a986d23819e9fb85a88d52bbdd6291b0bf3c1a50
+size 503969
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2291.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2291.png
new file mode 100644
index 0000000000000000000000000000000000000000..c36ab7da03db9b23949f0d1c304bbe9d89ee17b0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2291.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:928c2b3613407e2f689762832873ac783192e23cd94b3cb40f029dfb4c29bc75
+size 492302
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2293.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2293.png
new file mode 100644
index 0000000000000000000000000000000000000000..cc4af76f9b530fa9e8fead9ea37b3b0172227439
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2293.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:79bd15087befba6c1d1ec5780203cb0406da00887744060a34eda146116dc58b
+size 490415
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2295.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2295.png
new file mode 100644
index 0000000000000000000000000000000000000000..c39c73a32268411016b9b270ae48f0c28c5ed4f1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2295.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c9554fce0540ead7fdad9abf5ab095980de88dac18201c8ecbb5803cdeb0619e
+size 478025
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2297.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2297.png
new file mode 100644
index 0000000000000000000000000000000000000000..17dcdee932928f631edd564265874a18e8e8499b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2297.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cb5946311a15d0e11b15dee9f3776ecc40966521700d0928264226f28a3010b2
+size 470354
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2299.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2299.png
new file mode 100644
index 0000000000000000000000000000000000000000..6b34c589db7953b1c9c688e7e7b21f2a9aa0f734
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2299.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:104da621d1f4be1e3f122868e3b8986107d656487671d948533356571ae7c9b7
+size 486669
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2301.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2301.png
new file mode 100644
index 0000000000000000000000000000000000000000..56554eb71d666a5e5c74e68a5209d71e60936999
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2301.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d2ddb64434133051f37f83e33a79ec53a98d94b523ca1507083f4e03fe7abaf4
+size 417349
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2303.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2303.png
new file mode 100644
index 0000000000000000000000000000000000000000..899edd4e3adab193bdb153dd6e7e29236cc71dd7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2303.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:59098d5367406da593dc884b9f56fdf7a4542e39520944806e401f032381a43c
+size 463750
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2305.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2305.png
new file mode 100644
index 0000000000000000000000000000000000000000..01b188df02d1dfd9300cf636c5a968a1bfed16d0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2305.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bc8ed28ddeacbda3c3a465cbf07d56c7fb4cb7e1bb97254e4083aebb3e250da8
+size 493385
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2307.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2307.png
new file mode 100644
index 0000000000000000000000000000000000000000..1d02ec74bc15de5a979fb6c731b12364b0aecc71
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2307.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:220302b4dd98f90c8f6bae3b2ff00d9fb41ef42f1fc44290a968a35dc39e7157
+size 454032
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2309.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2309.png
new file mode 100644
index 0000000000000000000000000000000000000000..3290e6e101c5f919cd2cadd4970f6900fd94b419
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2309.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1fef921c2080ee75428caec74d5fcde4f25bb5944edfd2b643c40908c7d4b2c3
+size 508553
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2311.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2311.png
new file mode 100644
index 0000000000000000000000000000000000000000..5c77b981926f4222caa329c3077faa7ab4eefb1f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2311.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e5a50544884c5bd0a0e29ace8683d631bbcad9629eb7eeed3ea8fd5e63fc16f0
+size 447363
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2313.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2313.png
new file mode 100644
index 0000000000000000000000000000000000000000..369b272b4f23336dfaaed0b829ee0027e7dcd6ef
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2313.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b9941a0b337aaee0097928b944d5e46aba6433781d46ffbe587c5fad27f48ee8
+size 415010
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2315.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2315.png
new file mode 100644
index 0000000000000000000000000000000000000000..3b20baee64a44e01859d845f6169e7a0972e2b68
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2315.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:266ec2d6590342e3b61a0da4813a13ebd2be10e4f561d417da20a70680a355d8
+size 477710
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2317.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2317.png
new file mode 100644
index 0000000000000000000000000000000000000000..477bc9cfcb8e7ca193e50b2a98562dd576e817f0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2317.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cf7c88d5e7ba3a1f9073090b0d1dd248bdc17560c0b2b461d4b78133ac1fe2c1
+size 405201
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2319.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2319.png
new file mode 100644
index 0000000000000000000000000000000000000000..006b9e61313d49b9cf925913befd160854277391
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2319.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7ecac4283e08a5dc6fb59792553176ed508984b2dd8cdabdb777404d66fb5cfd
+size 474590
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2321.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2321.png
new file mode 100644
index 0000000000000000000000000000000000000000..af18229a5d8d1d7bf2afd3feba7706fca473bb01
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2321.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2b4982c221487a933426bbcdc794c86353be2184a615c0d0b4643e6f310fad33
+size 459027
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2323.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2323.png
new file mode 100644
index 0000000000000000000000000000000000000000..99f0706cd7cae290fa36046bafbadb4f0d553aa9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2323.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:36ed3d3140217c0dd62e6f2b502692c914b4d0423edaf6e6b9c678b1b08770c2
+size 487206
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2325.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2325.png
new file mode 100644
index 0000000000000000000000000000000000000000..168cb5d50711af0b694b86f0a469fa7802513a65
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2325.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0c1e923002e3d6ea131696c1246173973cc890bffedc148a25af15c6c147c265
+size 491064
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2327.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2327.png
new file mode 100644
index 0000000000000000000000000000000000000000..ddf59b9d3a993fd8a82098ef24c85535a7ec339d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2327.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6fafd001215aaccf8796e071cff4bc9e5dcc840f1458252e4edb8998773d42d1
+size 441837
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2329.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2329.png
new file mode 100644
index 0000000000000000000000000000000000000000..ebbbc69ea8e67c86d09884e772186305a7026df2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2329.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:92429c11e7e8fe712743c3b6213194ec3c5704544a00cb6b67590c6289300068
+size 486952
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2331.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2331.png
new file mode 100644
index 0000000000000000000000000000000000000000..4dcfb5d31574f17ebbacbd0ef1f9dc6bcfcab29b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2331.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d51f652f86b3169e080baf009278bdc2c1800f23987c05d6dac5135d110060bc
+size 377304
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2333.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2333.png
new file mode 100644
index 0000000000000000000000000000000000000000..b90270518c83403217f1bee169c5f1bfc7a51ec1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2333.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:540647b70e75adf5108b975033a33d249695983ad22cd4854c095f0ef33e4825
+size 520629
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2335.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2335.png
new file mode 100644
index 0000000000000000000000000000000000000000..ccba66166b0299762bb4600bc09a366ab36f1998
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2335.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:de0c6ad6de60b908d6c87481a0ecda06b7bb10de0f5ff4ba9352aba1db9573bf
+size 479868
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2337.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2337.png
new file mode 100644
index 0000000000000000000000000000000000000000..ada7b7a9689d09123cbebc168388d1757075f3dd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2337.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:10ca6d85cc74954ac5f57a36b9cfcfe5fb3b4a3f0eebee14f3f54a83b38034b4
+size 526597
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2339.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2339.png
new file mode 100644
index 0000000000000000000000000000000000000000..741133ca2b8203a3ffe80481949d9a54cd734911
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2339.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a818b6e10fc63b98a65e9e32da157c0792ed6176ea2558fc33d1076643230785
+size 493912
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2341.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2341.png
new file mode 100644
index 0000000000000000000000000000000000000000..74f0b743477162c51d7584d2f7ace5f21bc93dfd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2341.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7188a9caf289a877fbb6dc7b8986b4cbacb99094fd08d8c4b8a301cd17dbab48
+size 453616
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2343.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2343.png
new file mode 100644
index 0000000000000000000000000000000000000000..fd09ca6701ba971cd401d4aba66e5fbf7037172b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2343.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d7640941c4289a50c08217435494ddf238a8db0fd94d2cd35c95d5772b7a2dcb
+size 482602
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2345.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2345.png
new file mode 100644
index 0000000000000000000000000000000000000000..e8933f7cb5d3561549f39af5efc4b5c7a1a696e8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2345.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:15b0bcc2a0e21262a703e0c33a0a15ed9e9088b9f30bd2d25c0b7a98a1e1a4ac
+size 446198
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2347.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2347.png
new file mode 100644
index 0000000000000000000000000000000000000000..5115ebd06b381eb74894646455d9f4c3ee227b78
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2347.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:10a1a13663c0df2dbfa5105301d0d22423d5a901c1c78c4134c245680ac75c1b
+size 476353
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2349.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2349.png
new file mode 100644
index 0000000000000000000000000000000000000000..128b297e00403f0a5254356800eb48188a5f2187
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2349.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d25dd11392178ceffb94a6b6b3e770f2281a0bf859ccf11da94b1fae33555285
+size 502605
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2351.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2351.png
new file mode 100644
index 0000000000000000000000000000000000000000..e0534e30ff2aa356df7cbf84e5f07e4a2f833e2c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2351.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:12bdcb9244ed53af53e9a47612b340faf03253909c65bff4624868665c555f82
+size 455240
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2353.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2353.png
new file mode 100644
index 0000000000000000000000000000000000000000..2f9e424f612f5802901d9e9a19f336c82260b1ae
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2353.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b75b3d7ee2e3034baeb3a33e3c9f775121fe9e4af27e8a0f82ce3adab39fbc2c
+size 437991
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2355.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2355.png
new file mode 100644
index 0000000000000000000000000000000000000000..a4c1264191f9a9fb8f5a122c6a146cffaea1f7d4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2355.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d91ad69e463a27597e48b9e08936f6f33d5b1200cd3166ae39da9d49c5653a0e
+size 480165
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2357.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2357.png
new file mode 100644
index 0000000000000000000000000000000000000000..4ba3f0b767a5650fa34a7481943b0bca1a8232a6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2357.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:98deb13f7c20356a1f906227b9f266b5f7bcb671def0f87b6102979c692b7de9
+size 520641
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2359.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2359.png
new file mode 100644
index 0000000000000000000000000000000000000000..9f3d24970b1aa5ec9e66c45264ff3ca77d4d49be
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2359.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ac03a39858b1cf86c5f88a403aa0272580cd66c5a0210cc2ffc3dd5cbc72337e
+size 490084
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2361.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2361.png
new file mode 100644
index 0000000000000000000000000000000000000000..7bf9f59310781a145b88f1a896e336feb218eadb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2361.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:60cc89e500a1d173bd5fd84489fd11bba402e52ab714e43a3d730948ed789012
+size 465830
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2363.png b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2363.png
new file mode 100644
index 0000000000000000000000000000000000000000..2f0aad724f56e22336e02e765cd408e24d14b321
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Longest_Word_With_Start/2363.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bfe89d9366bba11d25e08ae45f97bd8c649c50addf7e2389ae41674070f55fdd
+size 523916
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2404.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2404.png
new file mode 100644
index 0000000000000000000000000000000000000000..c28b04be7ecc41f781a1c97ce8c5d2e5ee8d3496
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2404.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cf67e3bfc2828607188a1167ff66f46f22d8ba00b12cb21b08eac5b5f6c37a96
+size 438350
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2426.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2426.png
new file mode 100644
index 0000000000000000000000000000000000000000..e07bbd64f20f9163a5e269a41ad072e56c38ca8a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2426.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0347500a0c6e641fabcc6b5688dbcb1cf3a3fe4986d18c182e911cee3b40b186
+size 470421
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2427.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2427.png
new file mode 100644
index 0000000000000000000000000000000000000000..b81c4e09167c4941bd05709f6ec6a18c28956bcd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2427.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:aa1ecab7d91a55ce76ab138260bc63828c67986fc44ae1cdcda2ca218243352a
+size 490314
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2428.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2428.png
new file mode 100644
index 0000000000000000000000000000000000000000..cac2fd6676bbb3f2906280b9a67ea31d88ddcc68
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2428.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df1d99d51496274d83c3de77fe0e423832ba5a747ec02cf8c591a257b5c29062
+size 460132
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2431.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2431.png
new file mode 100644
index 0000000000000000000000000000000000000000..7eb23bccba60b466f97514f6bee3a3f90175b7ac
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2431.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a3d67624e5381412ce31dc7d67348a4ae73cb8b7f27fe2e73b44326d075895ea
+size 470767
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2432.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2432.png
new file mode 100644
index 0000000000000000000000000000000000000000..59d4ec7b255bf2296a6e9e6e2fc6c2d242054fb7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2432.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5d7baaac1611a9b9ebc1261ea9f4e6f2337bae67a939d10a53055b18b4cde16e
+size 429038
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2433.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2433.png
new file mode 100644
index 0000000000000000000000000000000000000000..238100ea5da166dc068b62fd0b93219aa3133bce
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2433.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:aa34551903084eccfc984a3fa818e3656539cc937053ff105d5de7b24226dd6e
+size 353491
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2435.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2435.png
new file mode 100644
index 0000000000000000000000000000000000000000..299bf548134bb8f6768e77324e0ad28371761182
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2435.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:37fdd9b34c89f5d7eaa52f1afa8edb527c93882654bc410bbcf54f4ff9b5913a
+size 405956
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2437.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2437.png
new file mode 100644
index 0000000000000000000000000000000000000000..4ace898d8fe3dcc45c52714f85a1ac3387cd9403
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2437.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f92b2c24ccbdaeb2901674e2ae080a3b7f17f7511c8866efaa869923a56880e1
+size 398446
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2438.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2438.png
new file mode 100644
index 0000000000000000000000000000000000000000..d54a5f58fede428c012f8c0c037e0837d2c60709
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2438.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:67aed113f78a87309663648a53fc9c662398a244284d835fa569c4d0163e3a32
+size 439800
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2439.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2439.png
new file mode 100644
index 0000000000000000000000000000000000000000..d65fe6afc1e364acf86caf39b5be14240ef3ed6b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2439.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f90517e94e20fc134029b9aeedad0b0759b5c37f7aadec83d6a0ebe8c80ff44e
+size 444699
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2440.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2440.png
new file mode 100644
index 0000000000000000000000000000000000000000..6dc1ae667426b879b093690acab251a72046e446
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2440.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3e311501030de791f5514a7c1679063a57e7ab59c8182a0d2a0c86ca94a255a8
+size 422007
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2442.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2442.png
new file mode 100644
index 0000000000000000000000000000000000000000..cf1d6bffd0d7fd832f9f1d63c3efd1da72cb25f0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2442.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d452f65deb0f85fd42d66c4b1ef353952f12d0f3a4cb80b984c40041a9f655c0
+size 428831
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2448.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2448.png
new file mode 100644
index 0000000000000000000000000000000000000000..f112a1d707ab80eff8d75c8de166117e7c01767e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2448.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7de9ddbb96c166a27669d13547c5e211341cf4ebe3f6ed9f6f0b34c3aab3b9f3
+size 495771
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2450.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2450.png
new file mode 100644
index 0000000000000000000000000000000000000000..c3a83f8f650bd2feb64840e0b065ac686ca38aaf
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2450.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a26bdad099e3dae237ce09da84ec1c8dce0aa49c9fb2c9a262049614cc13af06
+size 464747
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2458.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2458.png
new file mode 100644
index 0000000000000000000000000000000000000000..9f908cd00358b1ca39b16ddf39dd9436fb11efc9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2458.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0697debc14f3d2caceb740c342bf8dce1670d772dd04dc22e70de7b8390bcd07
+size 396941
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2460.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2460.png
new file mode 100644
index 0000000000000000000000000000000000000000..de8d78acf3e96290144177dac384417d8e20d7df
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2460.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2c24b9a1b595e886415be30dadd2ce291babfe198fa68648e4b3ee41ce44aa9c
+size 439990
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2462.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2462.png
new file mode 100644
index 0000000000000000000000000000000000000000..037ae8487453d2d3b67e87ae5c906d89f447831c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2462.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7c01c6cb6c6b247a13da69a1df0b06c2b2dafd79ee9fb2fa4adf70d63fd7e079
+size 409179
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2474.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2474.png
new file mode 100644
index 0000000000000000000000000000000000000000..0d1e9326b48bce1782c5f3def06e2a9ba1803997
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2474.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:aac14efc110c6ab08982190c8bf49bd29551df91eece65608dba49e6ef9a372b
+size 462410
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2480.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2480.png
new file mode 100644
index 0000000000000000000000000000000000000000..729471a6424827a8a736b9c52af9d01f29a96ee7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Bonus/2480.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:28cff430412a797a2e1ffe2154c72f9d4a6e7455e2cfc74edd83b83ae445a677
+size 407067
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2064.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2064.png
new file mode 100644
index 0000000000000000000000000000000000000000..6538dbf21a5a79b70c7d7c522fffc24403abb62c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2064.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:56c3e0149400086222488e53fe489968382b3cae0954efe0f7fd1380ab30a377
+size 317158
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2066.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2066.png
new file mode 100644
index 0000000000000000000000000000000000000000..351dd2f02f5b037d7cb2617590d62bc69072051b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2066.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:345f92501c88d44bcfaaa4f1c4ee34e40a0a9c35c797a3d9022f02915f46ade3
+size 368246
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2068.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2068.png
new file mode 100644
index 0000000000000000000000000000000000000000..4e7b693dc78ae0829f1a654bc843ffd162de35c9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2068.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cb1fbfb04e054c7778f3465db2ce6dbdee644562d742b21da977400875a98736
+size 471492
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2070.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2070.png
new file mode 100644
index 0000000000000000000000000000000000000000..9d538ad64eb222e7c7eb59e28d5be3992b7af49d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2070.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8e9e1194bb054576c11796a4f931f98c14021ec910650612ce10a47dc4929508
+size 391196
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2072.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2072.png
new file mode 100644
index 0000000000000000000000000000000000000000..cb5421de8f42b917527957bc15f63ee12f855259
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2072.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:52771b601328a67fcae5cfd95f0c7909a8cf0c28dada3cde12ade769494d322d
+size 375822
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2074.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2074.png
new file mode 100644
index 0000000000000000000000000000000000000000..58dcaf215ee4e5316b3f994dd21ca19c11485d40
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2074.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b18afd4c6f8033d7134408841a01a68292feb95ed95b7b0b802e0a7ddd4b89ad
+size 405492
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2076.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2076.png
new file mode 100644
index 0000000000000000000000000000000000000000..e742297dbf0769c3bbea954afe2bccb61b63e571
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2076.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e9b7ba40ca2e79da2e2ce5fda085a6ce183d349cd019d678b3e7190f011c4252
+size 382921
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2078.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2078.png
new file mode 100644
index 0000000000000000000000000000000000000000..5ab1130ce5f2dd02b211435e660e3ddf35dafae9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2078.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:054c42fa9cb0d7c530958410ba48c13825d907b895556dd1e367ff752ed0e30d
+size 336205
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2080.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2080.png
new file mode 100644
index 0000000000000000000000000000000000000000..b32ac1001c490f0591cf40b93af964d88d4da963
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2080.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:02732266921f20307ce23b451beca1d7be9a4b8934c090aee3413250d3f05028
+size 416509
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2082.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2082.png
new file mode 100644
index 0000000000000000000000000000000000000000..58519d61639622ea566bc1de5ba4a60296a610f5
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2082.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0c71c72b17ef78a31cc7a1209233c150265e5ff08abe551066ce98915f574a74
+size 353793
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2084.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2084.png
new file mode 100644
index 0000000000000000000000000000000000000000..8477b5050e5665bec77617eae1cc69fd2fcfe010
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2084.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:87670cf1bf3b8ee5fccf6e461e1c9b3fa4d2d4c4984a1e0d354567a21bd9f8b7
+size 422377
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2086.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2086.png
new file mode 100644
index 0000000000000000000000000000000000000000..1f8747e6f379de727ea816d854a6c518443c076a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2086.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:956f013ce876009c103b823d727012217211cfbbb8194190f95d4813d7af09ec
+size 376666
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2088.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2088.png
new file mode 100644
index 0000000000000000000000000000000000000000..d80c33c667e9f04f3575ab15fd770914be2badf6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2088.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7d89004f13470db8cb433cbe4e1a04e47a99a8cfd5a42e6d65a4a5b9a1a36d89
+size 384239
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2090.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2090.png
new file mode 100644
index 0000000000000000000000000000000000000000..39d83102d1abf45e04a2ef5f131d89353d863f0f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2090.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4d3c8c3b6c919eef3cb9d78ff79f6602e8e0793d6d2ed162aecbdc663d551bb5
+size 494012
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2092.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2092.png
new file mode 100644
index 0000000000000000000000000000000000000000..be1510be4aba71fe5a3f9986f7136d679a1ad3fd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2092.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d6fd953c647250432b9026c2a9eed501a75414330b51ae8ecdb1d36d9562cb9d
+size 475690
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2094.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2094.png
new file mode 100644
index 0000000000000000000000000000000000000000..39774d4eb69c4fbb16cdb0764f0c8fe670975503
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2094.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e62d5d82fb7f955b6e59b51079954d80be1df77dc2ffc581626873572d49eb67
+size 385165
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2096.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2096.png
new file mode 100644
index 0000000000000000000000000000000000000000..918b503461abb488a973c610bd3cc7bfb72b1a32
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2096.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:40e4784aeabdf1f5da5ecd18017d0a39aeff26e0fde184327500eae92f3a310d
+size 374117
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2098.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2098.png
new file mode 100644
index 0000000000000000000000000000000000000000..0a2bf4f31067064b3e162081c5423506e37c5c50
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2098.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:967c5527c76a93b93eae482589db5f6d0c5f65e3980c2de0cb98f48ba98573ab
+size 427274
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2100.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2100.png
new file mode 100644
index 0000000000000000000000000000000000000000..1f46636c1ecb82ba36dcb4a9b26fe107b0200db1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2100.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:435909417fd91847d1c7f367cfa3c1b598d81f900a7254472615c57349547731
+size 352883
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2102.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2102.png
new file mode 100644
index 0000000000000000000000000000000000000000..fff5712d6c3e91a7bc005d8be00aeb21d234a773
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2102.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:92f5a75ced69be99a2ca7496fbf8350372f2f7a633622749eafbe2c5f1e8130c
+size 391430
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2104.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2104.png
new file mode 100644
index 0000000000000000000000000000000000000000..b79f858c182689e36f89cccf5d4854fc969e77a7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2104.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4914ba96210d6c767845fec1e22aa9babdeefeb00e1195d3de2532803e12fa2d
+size 437690
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2105.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2105.png
new file mode 100644
index 0000000000000000000000000000000000000000..ba3c34decfc321e24fdde013aee5eda20464ffd1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2105.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:edf0ff468c2f22534577658b10a1f8ebc04582ec0661fc33354783ffc8cd0813
+size 461937
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2106.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2106.png
new file mode 100644
index 0000000000000000000000000000000000000000..9f1a2df63da0bad3e54062ce84f400957eda07da
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2106.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c42c393f5fa10d6f883cbe9a406d2c989768e76eed654e4d9e287e621dccc1c4
+size 411246
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2107.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2107.png
new file mode 100644
index 0000000000000000000000000000000000000000..45ada5ce421305715c6b28c963489edbc159007d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2107.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d9d1e650b1a1c491cbbdb73740d4bda861c95fc1cfb083ec2e797f00c9822a56
+size 422116
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2108.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2108.png
new file mode 100644
index 0000000000000000000000000000000000000000..fca6eb1a793f5d9e057894f6916a46b558222b55
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2108.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0784a6a0c11d53a2f4aaab128120aced5ed313d2298f35f201777daeac5624a4
+size 394398
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2109.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2109.png
new file mode 100644
index 0000000000000000000000000000000000000000..6b1bc8d854540551c1b117bef83c6a07e88cb333
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2109.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2f15c4b428f2abbf2db8b9278dd60b95553fea93c46489dfadbe3acf2a2d9e0b
+size 419227
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2110.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2110.png
new file mode 100644
index 0000000000000000000000000000000000000000..d0a016b365d45b0aac7008242f9acedd61c73fd3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2110.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eedc6df8035adceadb9abc4d5ba0c11716a0484461056d9514e8407e3aef8ca2
+size 442133
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2111.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2111.png
new file mode 100644
index 0000000000000000000000000000000000000000..d904f8800b57a5c8919a795b178d6ff4575d47dd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2111.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:93caeb30180941538ffef841a7489ba95ab3da74d4193885a61eb9ac3c4d9c4c
+size 457648
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2112.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2112.png
new file mode 100644
index 0000000000000000000000000000000000000000..888d84d88c85b9fecea6c4cbac3987b223595e14
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2112.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e47be89913c0c76672b1da0db3b6f8ec37d001fdf7d7009cac489b329948abe1
+size 354045
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2113.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2113.png
new file mode 100644
index 0000000000000000000000000000000000000000..7cd55ac0e0e26c07febb6e18478898225355587e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2113.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:46262802cbe6574865db9a5afc8fd0c0ed82087de295db7bd01bcc020b8cb1ad
+size 440921
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2114.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2114.png
new file mode 100644
index 0000000000000000000000000000000000000000..18247e3eb6bfcb1d87f0b03c9fe5b214827cb5a8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2114.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5cea69eb0e20e1b81041d4248d63536eb9c1236b961b826855e869ea429bf980
+size 474574
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2115.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2115.png
new file mode 100644
index 0000000000000000000000000000000000000000..e4c00be0aa2a686c428b344f8a48a08382072cbf
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2115.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a097fdaab808a9fd9e1a27339e2357f151c3af985d5a47e68efcb9d0d5557c6c
+size 375098
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2116.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2116.png
new file mode 100644
index 0000000000000000000000000000000000000000..add69e227ef1e303ba0ce36471149228c937391a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2116.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:67eab1a9f306947a753515cda17ee509f2e6f9d88edca21178131bf4ccf9e9bc
+size 354731
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2117.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2117.png
new file mode 100644
index 0000000000000000000000000000000000000000..e8aebeddfd9ba2569aa865c1aa3cb502013d74b8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2117.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ce7adb4ceaceda37e5a6735191707e2bec94404d30013e4160da68a231cece52
+size 388509
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2118.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2118.png
new file mode 100644
index 0000000000000000000000000000000000000000..678b7c86434210e07ba9981146786b94c98d36a8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2118.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4ee0a0755190643d5539cc1468d65ef15b7bcd2bd9154dfcfc669978ee46408d
+size 406692
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2119.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2119.png
new file mode 100644
index 0000000000000000000000000000000000000000..1c66830b88fabbd96f2711b07c7e42b4544bb553
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2119.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:96162e392922962cd38c689952a2602432cc30ecb2775adbf06cb87dbb36d9ce
+size 412273
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2120.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2120.png
new file mode 100644
index 0000000000000000000000000000000000000000..9836220c5dc78799240a13a2144cc6df6d5ccacf
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2120.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:26da7b9dda35a6e12a3cfe41b322d04637723484f1c9789dcd0bd7849aab6b10
+size 389007
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2121.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2121.png
new file mode 100644
index 0000000000000000000000000000000000000000..8732a338e25ca16641f5317bc4d146b99a171b1c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2121.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:269a27e58ab841cf4e47a045f947e2a22b8d01b1bad767eaccd97df9e82566e8
+size 422044
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2122.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2122.png
new file mode 100644
index 0000000000000000000000000000000000000000..563d68c557386808e257073de4dc374dff70ab9c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2122.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:074eb9f4ec63d4420d911b63db9a695f711d1bcece251062e34310c6fd6f9d2f
+size 471687
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2123.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2123.png
new file mode 100644
index 0000000000000000000000000000000000000000..375694e38371f91a9cafe7cda04533ab574a6378
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2123.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:57c0cdaa91ea491266c15ea8927fa877f2d48587ac09ad28fc0a304c0a3e2eaa
+size 385073
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2124.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2124.png
new file mode 100644
index 0000000000000000000000000000000000000000..256d1bbafa93cb2514039fd16c817259cdc5daa3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2124.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ba8c1e52d11b51893f0c1f828d8e92b69596b3d7102c98e2e269320740b4fd62
+size 414134
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2126.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2126.png
new file mode 100644
index 0000000000000000000000000000000000000000..50eb6f05a7996acc985f9fca3fa01cf62bc5161b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2126.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0ad64d723ee0d8c261d83f5010e4294cf91777c287eec048cdcedaa26b1e2d32
+size 428686
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2128.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2128.png
new file mode 100644
index 0000000000000000000000000000000000000000..ea9f793d2eea79b87496b51046b831c5c49a759c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2128.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:73c15f62bb6b2b3f1ee6cb31ce0f72c23f5fd81a3aa72224995e69a29c5d8ed9
+size 428281
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2130.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2130.png
new file mode 100644
index 0000000000000000000000000000000000000000..6ef0e3b276853c727aa3ce6d02cb4826743f9d7f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2130.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e81e89a4be04f6c727fc41c44436cbbc78d1c0023254ac88aab6c4a93e536008
+size 456811
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2132.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2132.png
new file mode 100644
index 0000000000000000000000000000000000000000..9adbeda744a7634e5cadebd5c43b591faf22f54e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2132.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6750b0d62511c187289d5d999a66428e1374af2e466180db827ff13d3d642d07
+size 460973
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2134.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2134.png
new file mode 100644
index 0000000000000000000000000000000000000000..bd4dc8650f99898722dc625b0d61e21dfe691d17
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2134.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ab77a45c4fade0ee2e9d25b91c18708e3228ed9ff4b67ea6c21d32be613e3b8a
+size 427560
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2136.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2136.png
new file mode 100644
index 0000000000000000000000000000000000000000..deebc01abd0b02dd3d72bcdac8d30b0eec60d050
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2136.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7a2c1a63eefdef2991724b812a6f15b891e5e7ddad3075d4f37c999b166c5433
+size 372889
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2138.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2138.png
new file mode 100644
index 0000000000000000000000000000000000000000..f67d73256fd004dc1297dccecba5c4d5766c67b7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2138.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2cdccfbf1367390b583212a79b8f375e0f176ef508b271e53f9fb95e2d8f1c03
+size 385390
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2140.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2140.png
new file mode 100644
index 0000000000000000000000000000000000000000..4756733b854737c1652263fbb25db83c2b885dcc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2140.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:678278c6b38864ce33c0a27da5b501516bc3f718d9b5847b696ee44d165a5a40
+size 420602
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2142.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2142.png
new file mode 100644
index 0000000000000000000000000000000000000000..b2c9181d1fab32ad86715f209bb0bac1d4b4b3a6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2142.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d60093f83f7ac2f8aeef525e637880d7a31a3f26ac70eb6819bc7754b01ce72e
+size 454537
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2144.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2144.png
new file mode 100644
index 0000000000000000000000000000000000000000..24ff306806621676b740c85d0da315fb1916a5aa
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2144.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4d45c0f15fdceba013cc8f5c2acc64928b2cc9e8042cfd35412a4be0fe0a1268
+size 369455
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2146.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2146.png
new file mode 100644
index 0000000000000000000000000000000000000000..f7e1fc3d7eac211d69e30a3b34085fc848bb2ec5
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2146.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:289cc74b9c5e4108306d076e808af4343e4ab92725d55054b80af03e69d0c5c8
+size 412493
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2148.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2148.png
new file mode 100644
index 0000000000000000000000000000000000000000..2efebf9c3237d2e9902d5fec70ae373ad4aae04e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2148.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f5dc09bae1dcef315cf1209f12a6afcf441737ef5c55be00e6055b46c4a51454
+size 423428
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2150.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2150.png
new file mode 100644
index 0000000000000000000000000000000000000000..ffaeb7a5a2739c1e6619d95d77c429d19b65d453
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2150.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8b725f9896de2def83f5e404785f98fe0363bd15b0c8f4439f0e145be2fbc105
+size 418771
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2152.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2152.png
new file mode 100644
index 0000000000000000000000000000000000000000..aa494e83b05eb1760836497237891de31f7866b4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2152.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:721d12afde99d710b7b887da42f54da9669d1416bda54802745e6f1d81190c88
+size 412234
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2154.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2154.png
new file mode 100644
index 0000000000000000000000000000000000000000..7026eaf4ac317283ad3f8917535b7d1a67adf1dd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2154.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f02740748c3f1b89fa08ff08dc124a29ff42e992c60f0180d5b65cfe65770cce
+size 417518
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2156.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2156.png
new file mode 100644
index 0000000000000000000000000000000000000000..0951bfa78ef36f300478433125df0ec887c8bfe1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2156.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2c3571cda8a92cd6e906743f0bf12bf47f72257fff11d19f85683ff0cf6230c5
+size 405526
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2158.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2158.png
new file mode 100644
index 0000000000000000000000000000000000000000..7ce9d667105fb5514aaf3c609275c3a2d7af2d5c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2158.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:23a29ad6b627fb84d78d55d1deada6dbc02a542f2e3ace1bb275a793f822dc57
+size 417004
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2160.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2160.png
new file mode 100644
index 0000000000000000000000000000000000000000..cb5c3be80f054738fdb98c44b46d5e647e7d4a9a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2160.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3569af7c21edf4788f7b45543422ee939c2d9ca95e5342f9a56b23a303839189
+size 380105
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2162.png b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2162.png
new file mode 100644
index 0000000000000000000000000000000000000000..7e69c95fd516f86aad2858f6662736f18ce4bb36
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Max_Submatrix/2162.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:050ddd782516b35ab96ba4f09f277d5e90fed592582437dccced32c2b030dcc1
+size 410948
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2486.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2486.png
new file mode 100644
index 0000000000000000000000000000000000000000..7e185fdb14d5b582792b619f2c5d9a2bc254ff84
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2486.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2030487ab48e80c740c22c88df13539981f72719bde0191a74dd4a42f4d6b9a3
+size 224614
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2490.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2490.png
new file mode 100644
index 0000000000000000000000000000000000000000..942d403ed84ab6c5e29e1e758afc9a16cc7adf3d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2490.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:77a057eac9d72712d84be00e733b5d23a32cf73801bbde3eb02232a7609b44e6
+size 300585
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2492.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2492.png
new file mode 100644
index 0000000000000000000000000000000000000000..a6289e4a9f05433bb9a0396cf8d8aeae228bc317
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2492.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d6676105c87ee8681950902dd46b5e8596c5d06452add5f0cb272786d2b3b85d
+size 204337
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2494.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2494.png
new file mode 100644
index 0000000000000000000000000000000000000000..91850a16b90b238f8993aaa8b1bd3aba7fef8892
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2494.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9d00ab07164fab218b847ea6a4e1ecb835776dba112cb015bba5727fb3a1f777
+size 294260
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2496.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2496.png
new file mode 100644
index 0000000000000000000000000000000000000000..00efe3b1fefbdaed19e2c7d70a676afc0599c393
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2496.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fcd1d286be79cdc20473aac8c128ae292ab9a881906828057916583493d33444
+size 268373
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2498.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2498.png
new file mode 100644
index 0000000000000000000000000000000000000000..a1bd6305efcce1aac33e8342119a0fc1012550be
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2498.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5b9b426d7e1cdd397d1d8a4e06fad479b1d28bb8af54ff9818db79c22fbe6e29
+size 283611
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2500.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2500.png
new file mode 100644
index 0000000000000000000000000000000000000000..09b55f9a867ddf89937a3557fcaca79950810c05
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2500.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:53f86e456a2cd61683f86aa79640cc314df8ab94d74a33ea4622b54f1c5b2d92
+size 314220
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2502.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2502.png
new file mode 100644
index 0000000000000000000000000000000000000000..f6c18cf96c7059eab4734fe61bbec47dd92bb899
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2502.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a315a520e6bdf8ea59f400be7bb209956e58ba2bae4e866c62bfd1e2d1eb9420
+size 305207
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2504.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2504.png
new file mode 100644
index 0000000000000000000000000000000000000000..809562e43dd07c2992d819d10800fc97962935e7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2504.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:48dab020d5050d43ce84ba05552e212f623e9ec87f0646d5047df41580df35ff
+size 282408
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2506.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2506.png
new file mode 100644
index 0000000000000000000000000000000000000000..37695a3e112bbf24893dae5f6b9630bffa46f0ce
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2506.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1d3ee702b3b00f5814db6fc977ec646715671e30554d67a457ac4c1804db45a2
+size 276565
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2510.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2510.png
new file mode 100644
index 0000000000000000000000000000000000000000..0699af00e53efcc7e922e4ad928ed7b6f7a9fcd1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2510.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8793844ec81a9fbfb7b14f0caa4d420f94e782c77177e173a442a5ce76b7982c
+size 267730
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2514.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2514.png
new file mode 100644
index 0000000000000000000000000000000000000000..715123663f3f7acd3b7ba84bb019ba1c8eb1c5b7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2514.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:038b7a811c1440ea263cac4a405b882aac29e6485433f49bd766e32fa70e6aad
+size 228583
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2516.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2516.png
new file mode 100644
index 0000000000000000000000000000000000000000..c47b572aacbbbd119efb5afb535e6d17a98f2561
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2516.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9aaab7a6dbd39df3ea721110113080fe4762b9d3c0e13d6d8e1dc2ef9b046da6
+size 277616
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2518.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2518.png
new file mode 100644
index 0000000000000000000000000000000000000000..b2fdaf83b9955c4ad557446f00fc65eb2c166b8a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2518.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:855197607cd4f35d8c4e4006d930255944bec8804c8b054e5d4477438b1ea1c2
+size 311059
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2520.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2520.png
new file mode 100644
index 0000000000000000000000000000000000000000..977d39a4efb4809523769fe2f28a9e5ab04c7a75
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2520.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b605c5654f7030ee85dc090b9ab95221a617e30b99dac01f58fefde250558bbd
+size 291287
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2522.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2522.png
new file mode 100644
index 0000000000000000000000000000000000000000..bb307a48ee71e90a72e285a4ca2641bb8c56ac54
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2522.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7b3214a418d3db09793181475b1f7af2a60e315d75a33d0e55547a8d37cb59b8
+size 239845
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2525.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2525.png
new file mode 100644
index 0000000000000000000000000000000000000000..50a1c66dfbd417e7d977cae503211ace23b70a78
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2525.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c72936581331524335cd3f420d75e356d057bb9ff748d98533a87eb61d97a16e
+size 229051
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2526.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2526.png
new file mode 100644
index 0000000000000000000000000000000000000000..fe2e1af29cbda633b3451bceb4204ad0ef2ec180
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2526.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b9f0f46afecbd1dbcfafda8515555bc427537bc05375fd06243a73d61fb75f3c
+size 274947
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2528.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2528.png
new file mode 100644
index 0000000000000000000000000000000000000000..32a1181be4f321a484360107861c835864d49b3e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2528.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:83c5217ad76975904bea0107dc2ae29ac0a73791c19729887a72bb33ab8a920c
+size 252840
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2529.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2529.png
new file mode 100644
index 0000000000000000000000000000000000000000..11de9b1468cab9dc9b39968ced1b692f2f5c7072
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2529.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9d4a1f6e7d9a82e87d719f3255d40cfbeff23f051e55823b2857ff428411d458
+size 284028
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2530.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2530.png
new file mode 100644
index 0000000000000000000000000000000000000000..539d651939fd9721171fe985b21d8662b93923fb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2530.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9a60e567806b67e56601871b7ad70ea0fca096ebcc26d9f1dfa4e1200b4ed680
+size 409508
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2531.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2531.png
new file mode 100644
index 0000000000000000000000000000000000000000..677d2151e1c0bed5688cf977b9d6bc340567324b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2531.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:31f6d4bcf0bf919e41aedca53eb140e784b93964fdf5b4d99b35a84f4f66da1d
+size 286347
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2532.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2532.png
new file mode 100644
index 0000000000000000000000000000000000000000..8abd6c0b6f356871dbf9ab39a9771d129245e723
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2532.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:606325085da0cb071556b9028c8991cf8426bb859bcb491c00fe2939e3eb457c
+size 248319
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2534.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2534.png
new file mode 100644
index 0000000000000000000000000000000000000000..f19a9b0cdc989283e70bce35dd649f719840eaa7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2534.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9552b49cd6956342d380d824b01ff51e5bbcd7204196c59ddb83a56b27c10e22
+size 250300
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2537.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2537.png
new file mode 100644
index 0000000000000000000000000000000000000000..5b42ac48bd0850ab7cf43af8497776cd2d5b6a85
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2537.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:58bcbb095678402480ca684fa0015a20ce0f642729232b7e409269b6ad0b66eb
+size 312336
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2539.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2539.png
new file mode 100644
index 0000000000000000000000000000000000000000..84aa629d111d3dda657f099b362d7b1f820f7540
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2539.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:da91f14e88462c8c23aabfb8f4545634afbb1611c439ffd69cffdaf599aea472
+size 290763
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2540.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2540.png
new file mode 100644
index 0000000000000000000000000000000000000000..748623e251d97c19343158f0e5de67e8daa5bf60
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2540.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:924ebed17811918934f0e81c4b9ef1c5d315b225b66d25c0eec8980d88c596ed
+size 286638
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2541.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2541.png
new file mode 100644
index 0000000000000000000000000000000000000000..4ff164cf9ea78a6eef95c0ff2b2773ade7ef2548
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2541.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5f10e352bea397ad51b155de5aa170a6f6017a3ed28e12c5a35841cdadcaf051
+size 265958
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2544.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2544.png
new file mode 100644
index 0000000000000000000000000000000000000000..985eff31cc5722da00f0fbfd2ee329906d12608d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2544.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dff199794b7097c96a9ecf7a952568737aef79a4c72ae688a58b63a1fa0aed6c
+size 304553
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2546.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2546.png
new file mode 100644
index 0000000000000000000000000000000000000000..81ba7ff6856f0f47a7f5730c47c04630cc031731
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2546.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:557d41178ab335c7a9cd74ecfa1457bb7f6d24b2ffd1dbd839256d4d6ee3b007
+size 206880
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2548.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2548.png
new file mode 100644
index 0000000000000000000000000000000000000000..6314297007cc561fd587fb5e868b56ee2be686f9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2548.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:da7cfc0b028fc8b3e4534b88df9a1fe1fb764ae04a2864e9a5057952e86d6bfd
+size 227246
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2550.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2550.png
new file mode 100644
index 0000000000000000000000000000000000000000..3b0e8a26a03ec6345a0dbbf87267c7681c387496
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2550.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3bdeaf96c28eca4e4a2ebe9be37851b605b4d4c8a879a6e670cc40d3a508638c
+size 299384
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2552.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2552.png
new file mode 100644
index 0000000000000000000000000000000000000000..0c63ea30ffd84a864a77674e3fe2b9dd824c2c07
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2552.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e8ba686987334a5a3f1888b6d1b2b2862ef0155de8ad0ab33b77d1984f3f6fba
+size 243120
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2556.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2556.png
new file mode 100644
index 0000000000000000000000000000000000000000..99cd83043b6b1c4d4cd7e5eb418ed2fde990a9e3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2556.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:afcc4455b340436d1a1f6c2f2216b249fcaaf01ce9925375a05cb9ad86e28b32
+size 298916
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2558.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2558.png
new file mode 100644
index 0000000000000000000000000000000000000000..918659f19ecab5418a59f82346b13b573a295d48
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2558.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:01bb936669bf611e6afa949e17e89e1215c3692d5b6e149cdf4c6b016b0c5dce
+size 268483
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2560.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2560.png
new file mode 100644
index 0000000000000000000000000000000000000000..d1420b72a7e977cf0aca7f7452bae4807142e30a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2560.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f9aeca2d4ca7d3b11036add0b9e62165e27dd8276d4794be204bef67500d81aa
+size 307578
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2562.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2562.png
new file mode 100644
index 0000000000000000000000000000000000000000..f7803b8bce1c6b7ca0ad10a586014b889c90718c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2562.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6a213303f060e773dcb37d53e3b2b45b9e1187cad21c1ea4002b8f717f91c50d
+size 322728
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2566.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2566.png
new file mode 100644
index 0000000000000000000000000000000000000000..6d2533c989fa98bf24e34191017e63febad195e2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2566.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:61786c6f185c67b99dd7a2ccd5cc81a7d122ec9fa871e1adda07f8efa17b6da0
+size 295226
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2568.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2568.png
new file mode 100644
index 0000000000000000000000000000000000000000..db74763f82f898523988ac0527621a726688a539
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2568.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bd6d1a6b3193794b7848f25b6ec4468a3478640e64d8e875f4172d06777b65c0
+size 231631
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2572.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2572.png
new file mode 100644
index 0000000000000000000000000000000000000000..3f30c6042dbadac531db65600709539b65c1fa12
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2572.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c09d7c092591db848d730415033ceb2fbf0722456392480a0f3b0a6148f1c489
+size 292891
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2574.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2574.png
new file mode 100644
index 0000000000000000000000000000000000000000..415b1070bf10c6bc2284f59777c2268fb07262fa
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2574.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:af16b54b3272c760ef3fba82288b1d18b9a0d43717af8c9dbbe24a200b4b98de
+size 248059
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2578.png b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2578.png
new file mode 100644
index 0000000000000000000000000000000000000000..3777fc14c07ad687445acf76f05a6a3b4c7a088b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Number_Link/2578.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d13f3b7a7a1ef7874dafcce6f7c2b8f69d4cc8d40749dc82358b70927a2b0c32
+size 269069
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2584.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2584.png
new file mode 100644
index 0000000000000000000000000000000000000000..0fa56199be9dbd59f0117f2a9b5f953413619908
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2584.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:28026f119b2454d5a1d33b8634a3850da1d89bb56a929787442d27356a056d35
+size 468213
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2586.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2586.png
new file mode 100644
index 0000000000000000000000000000000000000000..b50dd4253554b78d53d67b712132b279bf766904
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2586.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a3488883fc8b23345d1219b22189ca781a7cea73a5d02d9b2e7c801595629176
+size 348791
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2588.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2588.png
new file mode 100644
index 0000000000000000000000000000000000000000..ef5308769d0e7aa2f1585b419b67cf5880b33f5c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2588.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c2174112a4dfdc5fecd47793b6205e2420f5be3af07d3c8f08196618068b4375
+size 361071
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2590.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2590.png
new file mode 100644
index 0000000000000000000000000000000000000000..9df753cb625b01b38d37de753dd95c690911665b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2590.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:49fa316ea280ae0cd94a346a7ba66994f220926df1029a7dbb429a4765bf088b
+size 374622
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2592.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2592.png
new file mode 100644
index 0000000000000000000000000000000000000000..4924f7a416a3ca6ffa7c940bf4287c2b16c9ee8b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2592.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:17ba580984f1bfac4cd6c15da4ddef0c3a6943c00c8c0d6361ed2afc4bb14b57
+size 296320
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2594.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2594.png
new file mode 100644
index 0000000000000000000000000000000000000000..ab28747e116da8c50f7efaf1a4db9b86e62f66f3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2594.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8aeecb5a044c854ef1f1aa9e0b95fd111c685d36ddd18ce190a0165ce8433aca
+size 371554
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2596.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2596.png
new file mode 100644
index 0000000000000000000000000000000000000000..a0a01e3efb45f97c07b1c1f84df3473c2912370a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2596.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a0f36e330f7ab19b6c3d9b813bfd60ee309d07061eef8f119be5253ed4022061
+size 349268
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2598.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2598.png
new file mode 100644
index 0000000000000000000000000000000000000000..2a4dc33abe2449fd9921bcd2d8279a6d32494b5a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2598.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:997ce0350ce4827659b591d66d8c69ce87f879dd40aa97859a50ea40c4a14c9b
+size 364665
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2600.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2600.png
new file mode 100644
index 0000000000000000000000000000000000000000..d2643268548f1d7ef85e168387f6f8a7e0e6b70a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2600.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:79f8fa39c74e43fe0bb4091a3cb03ad70154d589126f9bf079d60b124fa39d9a
+size 327367
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2602.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2602.png
new file mode 100644
index 0000000000000000000000000000000000000000..40f03d7496a81025027fe2efa0649bf0a392794e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2602.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5b127ec4139c2833f63e172374617083d6fefd4ff7dac89e83c0e6c2d7a10065
+size 403882
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2604.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2604.png
new file mode 100644
index 0000000000000000000000000000000000000000..7bebe75a32e138e20146554764a0c7d45f226634
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2604.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e4e6720111d560454a4ae6eb258c7b314f87d1c979fb57250b2c6beadaf4dafa
+size 376094
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2606.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2606.png
new file mode 100644
index 0000000000000000000000000000000000000000..2436485061eae31a6f78de93065f2d260ede100f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2606.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d1bb31463fd87e5d810223822f1c491daa1d6363c8fad89f8e1b810bdcbe8f37
+size 295122
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2608.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2608.png
new file mode 100644
index 0000000000000000000000000000000000000000..9dbf74b8a86a230e260d55378687e656567300b8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2608.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b790104e9bdee41dcf8f3d98e6948a3abe547afd9ca0a5893da597666a456956
+size 334019
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2610.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2610.png
new file mode 100644
index 0000000000000000000000000000000000000000..ba4da916f5596714f72b346f1f54c5fb9e149358
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2610.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:104d3a388d0aee5c52bed1885f29a710a1f184a2d5aa0433fb7faf647d90a164
+size 368441
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2612.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2612.png
new file mode 100644
index 0000000000000000000000000000000000000000..bf181aba5ef075700ccad20271510669566025c3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2612.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:44006b888f29d687fbe91c2c272ed35f53a8e64abd6e20cb709bade395ef4239
+size 347441
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2614.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2614.png
new file mode 100644
index 0000000000000000000000000000000000000000..b3a295d52c8f7269f8a581c99bf86ebd7bd52e02
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2614.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5e95df29f4b5a1727ac72c396de35e5338f1b00748bc99e0ddc8235f1d6523a8
+size 358323
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2616.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2616.png
new file mode 100644
index 0000000000000000000000000000000000000000..870f473387d7c289e604f303d1c48b85debb8a97
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2616.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df554fcdb27f58b3032526de0eb5968e5411b7513b32372c764eb234eff54fcf
+size 370053
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2618.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2618.png
new file mode 100644
index 0000000000000000000000000000000000000000..3d06c673caab0dfd68d9432c49cb7c8bdb672e8a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2618.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8b7683658d322629403e2f5de0d5c9ba1867f1215b40a5bfbc95bd46ecf4c559
+size 320934
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2620.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2620.png
new file mode 100644
index 0000000000000000000000000000000000000000..7006b139d5b7deb640432971953189709bde37ec
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2620.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:92f6c4ea1944fda41fdabe8c7eeeb45a1a7a6d7f08bd7b8ec3111c69a700cb61
+size 320048
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2622.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2622.png
new file mode 100644
index 0000000000000000000000000000000000000000..113f047f74901a2801e257b66c3b3f7334f5bfb4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2622.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5117f5938fb51d2e57ff6ff5aaf475d5ee89afec7ab63cd878ba148d3767858c
+size 347779
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2624.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2624.png
new file mode 100644
index 0000000000000000000000000000000000000000..5af7f97c7851896cb393412dd2780435f31e62d2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2624.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b0a7e6e6567091f9120729a36b2a691529f1968d2ace3e997b367ce0b746c61c
+size 354622
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2625.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2625.png
new file mode 100644
index 0000000000000000000000000000000000000000..1d63d70a617fc6501467aafa86e6e2f0042eb0c2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2625.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2510bf7c35ccc978ed10d48aeef06055bd8739e7be12290c4618b25ce2d28994
+size 379077
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2626.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2626.png
new file mode 100644
index 0000000000000000000000000000000000000000..8e465d66cff13d909af7be47deef9c68b2dea930
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2626.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cd79828918adf27ac9d2a477c104435afff0f4439b9fdd3ab9137f18441b2ecd
+size 363729
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2627.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2627.png
new file mode 100644
index 0000000000000000000000000000000000000000..0263a6bc2f28bc177ebc2f9a1bde617c742c1a35
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2627.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:98127eca92b82832849c6f01f28a4428da64354246c3cfdb0a079cabf62f2b53
+size 383043
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2628.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2628.png
new file mode 100644
index 0000000000000000000000000000000000000000..dcec4ac4bdeed9eaf48dbdc1eb8fa59de59c32a2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2628.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8269aaa4c5c54c5c3ed1ae5bca4425b746b0173bb5885de471fe61eb9954d014
+size 329012
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2629.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2629.png
new file mode 100644
index 0000000000000000000000000000000000000000..35d351aee2d3ce3d5fc4411646917bc2df866484
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2629.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ecb08e4afe7b0b977bedf490f0a966be7cc7b85bf5d086f7bb9e9a503f3cf173
+size 309897
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2630.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2630.png
new file mode 100644
index 0000000000000000000000000000000000000000..4c89499e31c40b79ad81c0c729eb9829100d7eca
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2630.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:85439eb2a21320fe51e95b9b60ca2db5500ca711ad37cfcbf56083e0df9d1610
+size 396534
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2631.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2631.png
new file mode 100644
index 0000000000000000000000000000000000000000..7a04972668868a81815929f5ebeda191c5071c1e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2631.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5ee6b93ce17bc6ae907c58be6f03d2bd63d5a2fed825b9acb763ebcc51cbd062
+size 349493
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2632.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2632.png
new file mode 100644
index 0000000000000000000000000000000000000000..6b16a643d1c13d9f4edd1ab5808e74c4fc655f7a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2632.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d828d80ac90f731f121e6282f3c231029eaa366574b6a028e7ef0fe0b3847d87
+size 315834
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2633.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2633.png
new file mode 100644
index 0000000000000000000000000000000000000000..1747c8b075693449990e5b77a7ea69689c78b410
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2633.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:86fa261903565edd47772d3eb04c8db19d232ab7a1ba50569c9d96bbcbcd2d48
+size 373526
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2634.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2634.png
new file mode 100644
index 0000000000000000000000000000000000000000..f34aa9c69c1787480ed864592cc6556ab4a9ce7e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2634.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:277a3b27e62273a5e1acd2059cd0dbbc6089ca4002ebef80e4fba9f5031eb330
+size 391571
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2635.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2635.png
new file mode 100644
index 0000000000000000000000000000000000000000..d43f0a8ac2b5a5eaa0cefb7c37fa52c2f8eca92c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2635.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fdaf243c168b4ee876479ce380d6f27e6d35559ab65d9aad7fdc7b8186a028c4
+size 362941
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2636.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2636.png
new file mode 100644
index 0000000000000000000000000000000000000000..23f3e8f22ab33483fb186903beb783dd2f3bf777
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2636.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:acfb6db821b35f442187d676f814f439bec050099690d3231468faba3b5b97fb
+size 382353
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2637.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2637.png
new file mode 100644
index 0000000000000000000000000000000000000000..c67b4ff98bbf02f7fc8cd9ebd72cbad770c3fe20
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2637.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:36b78c49c98a47fad2b6532dac6112b502ffdc39c5a99901630442b3811f618d
+size 332983
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2638.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2638.png
new file mode 100644
index 0000000000000000000000000000000000000000..35e0ec1b2583566955a8f9fcc24961cf771c7869
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2638.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8eb512f006373da52b7c7545083a8dd9a3f8c473a47aeb12facd7c8182205f1c
+size 367194
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2639.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2639.png
new file mode 100644
index 0000000000000000000000000000000000000000..ae185029a2b4d20bb17fb8e85f815039f2b9ee98
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2639.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:edc768e88231c0612d8d265205e172577e31181d5d0d8a595cd020eef78192ee
+size 350456
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2640.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2640.png
new file mode 100644
index 0000000000000000000000000000000000000000..7635c9804e3855f0dc37fd5b69cdeb22d9c8b1f9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2640.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4786baa9fd021bb39c138a0ae16458adf38fa268eacf0011fc0ed927a3d428b9
+size 440134
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2641.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2641.png
new file mode 100644
index 0000000000000000000000000000000000000000..bc5d6e87638c1dbc4ef696163710d1a02fe1b5eb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2641.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9e7cf059c69c52d4a1c76c4ba8adefa616e568babbc0c1badb522c2e21f40273
+size 362230
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2642.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2642.png
new file mode 100644
index 0000000000000000000000000000000000000000..7ca9632ca2a4ddef47d38131fcb089442858a1b6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2642.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a4c2b08c56311c681ca90ab29ef787d958655d45e95934931c830a6c205a4a76
+size 336223
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2643.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2643.png
new file mode 100644
index 0000000000000000000000000000000000000000..999d638816b00aa1160b4af8b887b3ce2e43195e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2643.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b60c926a82945af0be049939d10ba1e9d92b7e0097e7fa8ace5cdec96751fb80
+size 381218
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2644.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2644.png
new file mode 100644
index 0000000000000000000000000000000000000000..5c56e2b78ec82bdd869247d2cc7742dc78d1776f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2644.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:36eaa0d9cba33964b7e1d09f359acfd7815793055e708cf78cf0f90e63f93041
+size 448820
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2646.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2646.png
new file mode 100644
index 0000000000000000000000000000000000000000..046ed0333b9fe69a63b3f32852e4c6d6a06d7c9c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2646.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6d9fbdbd6849c6c275613d29bb39ce4b089c1edf5a851006a8990ff9a778ad31
+size 286815
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2648.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2648.png
new file mode 100644
index 0000000000000000000000000000000000000000..687bf267ba4e1aa4edf5d962d8c73c0729210675
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2648.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e21b14585b1b520acf2ad40da28be4cf8bf30fd1f016db3766ae34bf07bd7700
+size 324024
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2650.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2650.png
new file mode 100644
index 0000000000000000000000000000000000000000..8cda967724097fde36b1e5b3e544cde75afb3ab4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2650.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0f84f71de31e3bc34060b968104d2007549b26de523153b5cde4c3f8c4958117
+size 363767
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2652.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2652.png
new file mode 100644
index 0000000000000000000000000000000000000000..332a9df9b074f071c89d2e021086507e34a88ddd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2652.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b3bb1de91306dfcdab54fb24f5005ae79cdb88edccf0d4cee8c0eb74729b546f
+size 377621
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2654.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2654.png
new file mode 100644
index 0000000000000000000000000000000000000000..59f991bc5b1c365b11820d1846299254fcd8ca04
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2654.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4ed8c8db17aa3ac2215b7773152652dc1384f9642b963679a3c4dded420344b9
+size 363037
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2656.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2656.png
new file mode 100644
index 0000000000000000000000000000000000000000..a40b5ff0f433615be5285f87149d676b9810f7f6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2656.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e2c0dbd537cae664108283f4e43dd491a862ee628ec2b44b8f1adb4de213970c
+size 366006
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2658.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2658.png
new file mode 100644
index 0000000000000000000000000000000000000000..43d0a0b10affd9d0797fb7663cf44b2b8b4a0f86
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2658.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:98eefc0d2aa00cd5cef3d639c8651c5e5221d7a83f315b89be061818c92b968a
+size 356829
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2660.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2660.png
new file mode 100644
index 0000000000000000000000000000000000000000..f776059204fd9d447eca6d5c48a5edfe10bfdc7c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2660.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3cb454270d85817ad4cf6036d813f649dbf4b757f3b59ed01b20d9289182600c
+size 344596
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2662.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2662.png
new file mode 100644
index 0000000000000000000000000000000000000000..ae6b5f72c3eeae574248c646d5189d4aaa4aa2bd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2662.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:71a72e29e565bac218796859b327dfee83ce1d7a344a824fca399cfc14c8e0dd
+size 399842
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2664.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2664.png
new file mode 100644
index 0000000000000000000000000000000000000000..6a933ea5ea8946c30b3bbfa822647774a474d185
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2664.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:39fc9bef399abd8b2fde6ea07578d2f8207b534a6b22fdafbbbf81d1f26e642c
+size 357939
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2666.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2666.png
new file mode 100644
index 0000000000000000000000000000000000000000..a77a8b745b73b4a55c8cd2d6ec96973870cc0619
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2666.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a2b3b77fa4de30ee5215c1706d638ea1cc5ab8e56ab29bd7b8439791337f9859
+size 374190
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2668.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2668.png
new file mode 100644
index 0000000000000000000000000000000000000000..f741626adfa493d4f446716f74624fc7c0e0964b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2668.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1c43a0b1d0767dd96030b99239e19e36c41eb44b9cdcfe6ab1c3d7b8f3dd4681
+size 313072
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2670.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2670.png
new file mode 100644
index 0000000000000000000000000000000000000000..68d083adc1f9409d8e3457b785c9b4414e2b0438
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2670.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:912ea8fc3a47dcf75c92746bb99bfa9e79274f99b23bc7f2f8794fff6af57dcc
+size 380390
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2672.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2672.png
new file mode 100644
index 0000000000000000000000000000000000000000..52d141c2cdd1b9b07d743dede27544fc27654b4c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2672.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:af4735e2459e1db656b67d2af877794b50a683ee11bcf7061282d9cae000777f
+size 381775
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2674.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2674.png
new file mode 100644
index 0000000000000000000000000000000000000000..541267cdb6d5af37edf6f23c13f3db2127f2e2c4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2674.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fc757990945ff10ea78b8a168e3d1f73933ce0c76faa88bf7ff63495dd1378a6
+size 359660
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2676.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2676.png
new file mode 100644
index 0000000000000000000000000000000000000000..cf6f0bb394d2988405a12f43e8aecb672ca5dec7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2676.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5df9dda3c35e2784456dd15c701eadba9363a8de00936faef5482da7b24d9a7c
+size 415043
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2678.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2678.png
new file mode 100644
index 0000000000000000000000000000000000000000..7f82b1934b52653e49468c3a0ffa0f32849d5a30
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2678.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3bb844ec1f1fd4bd731455f98bacbf37791fc20a77f10f25b15cf73458ebd1b8
+size 367626
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2680.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2680.png
new file mode 100644
index 0000000000000000000000000000000000000000..b1512d5339b7a20711eddc7944119f95a784a13a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2680.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:efe471bc0963860a7a568de880413f59cf0138dd10d63c9a24ac42c5bf1a2f09
+size 374988
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2682.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2682.png
new file mode 100644
index 0000000000000000000000000000000000000000..d1f38ea736c5e3b792b343cc2decec3e1b69eea1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path/2682.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dfbf044f25949a4efa610eadebaa93682189945e9e1080178874a40398f6e15c
+size 367984
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4222.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4222.png
new file mode 100644
index 0000000000000000000000000000000000000000..cca595d3596b7225f12574d181c8e6c3680aad43
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4222.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:46b5c19c99f70ede584667819f0b4a4d3abdada085079fda16e6ab3c8281625d
+size 349804
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4223.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4223.png
new file mode 100644
index 0000000000000000000000000000000000000000..7877fe5043558c195106acf1545a4e6f9729e455
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4223.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b083655c02dbb1aae1cbbf3a2c6f6b9815484db88474c606dee2c70408558af2
+size 302103
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4224.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4224.png
new file mode 100644
index 0000000000000000000000000000000000000000..4f1f5a04ad8408cc875ddf0b1ad8f8e824dc6416
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4224.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:46aee791ed09a4539ae304a3395f511180c2fee3994f81cbdf4f897b2f05871d
+size 333544
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4225.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4225.png
new file mode 100644
index 0000000000000000000000000000000000000000..3afc4ce1cf5a10923d2c0e9697535a8230cd7e49
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4225.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:db6eb7c547bf2d954b14ca24617398599b2b8100ac0510029274500500f29754
+size 356530
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4226.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4226.png
new file mode 100644
index 0000000000000000000000000000000000000000..ff636f4fa594b96d8a62ce80e7a887bb6b5d55fc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4226.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d88b9b87bf284680c9b003898a0b14a9b4d19e19142bc534c5580cc1a244334a
+size 397471
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4227.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4227.png
new file mode 100644
index 0000000000000000000000000000000000000000..0f45e6d1c114d6aa403a7402ff1ef00ea6e94f27
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4227.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6520a360cce170f0448027415494745ea2f0fd1892e7b101541b3943177c4d99
+size 301627
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4228.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4228.png
new file mode 100644
index 0000000000000000000000000000000000000000..33d4910b36329f56eae220b87d8796fa83f14f6e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4228.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b6e91be0a5e1c7daba186082541203b2a5ce11bed9395a33f2218eb29e3b1ad7
+size 356896
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4229.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4229.png
new file mode 100644
index 0000000000000000000000000000000000000000..6264a6aa5b7ef24d0dc7f6bdb33a8139402bc662
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4229.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:52de6eca11fa98f6161dc0869423b86f2c72969cab796d9b5f8ea2c966346849
+size 358349
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4230.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4230.png
new file mode 100644
index 0000000000000000000000000000000000000000..ec60d0f1ebe855c3a380d1dfa5dd1bc4cda5ae92
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4230.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:460d388e8f21d86ff051d5003dacbd6c8d2dd4a65892986f56470330f2281da9
+size 353734
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4231.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4231.png
new file mode 100644
index 0000000000000000000000000000000000000000..374180e919efbca994e6dde039f39733c007bcf7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4231.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4b8535749a83dce944018722981012f2283caa5a7aef6dce8d6c81754a3c7553
+size 305741
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4232.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4232.png
new file mode 100644
index 0000000000000000000000000000000000000000..6da9c0670c0dd4a219fe22453b1b41ddb41cd2ba
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4232.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b166003d727e38b4803cb95ccc175080008285fbbf55f70bba9893f0b28eb32c
+size 365877
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4233.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4233.png
new file mode 100644
index 0000000000000000000000000000000000000000..02a60122b972c9bf27b82e80c652ac2c9414f1fc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4233.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:42156ab6051d4e188ea4384ed11c7c88a2b2b8d32a6626936d2492c9ceddf2c7
+size 296567
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4234.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4234.png
new file mode 100644
index 0000000000000000000000000000000000000000..eebb44a474129c0cc8f4103d3de74d1257b718ea
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4234.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f40ee7e690de5e4bd071c44926d7490140ee8b83700d5c5ee49d534cc64fa2c4
+size 306918
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4235.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4235.png
new file mode 100644
index 0000000000000000000000000000000000000000..aeb400ec4df3805668a2ef3b3a82d8b67cc27eb8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4235.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dbcf29bc0be9d15b49c8f730fa29572caad247e06af573e779031f310585aaa9
+size 326725
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4236.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4236.png
new file mode 100644
index 0000000000000000000000000000000000000000..23c78a559c5b3a110e5e38c3d617337b4b810026
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4236.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:89e7f465c8e1b1ded95bf591c28de03171d82033e958156763c4a9554343a905
+size 406865
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4237.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4237.png
new file mode 100644
index 0000000000000000000000000000000000000000..546b435103ad9e722cae41cbf8a8b164cc7797fa
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4237.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:acd4e067577ad1a55215a182a1c1b499ca2252437715f4df2263fcf314a2c44f
+size 362387
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4238.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4238.png
new file mode 100644
index 0000000000000000000000000000000000000000..b6a100486a9c2c26ff984a75b1dcdd5e10dc7cdd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4238.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d7f0b0557d49adf7a2c32f6174fe0455fb7fc792446718cb5a9731485146a10f
+size 303698
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4239.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4239.png
new file mode 100644
index 0000000000000000000000000000000000000000..b7e2a898924591d5302c4a545f712213ceda9455
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4239.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df08d6826858dbe69a2b48bafd74f7578248917eb4ed0db65f858a17841fd28e
+size 296163
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4240.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4240.png
new file mode 100644
index 0000000000000000000000000000000000000000..b37b41b24971d65126a92a772b0ddfdfc191ce41
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4240.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:98e6baef62fe4952b19b7a24b1bc54bfc84f97c6ccb67db48196503a0983191d
+size 374942
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4241.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4241.png
new file mode 100644
index 0000000000000000000000000000000000000000..46e7a3b84045ab573a339f9a2c532eab32b198c7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4241.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3750b7ec678d2303d30f8864cf37901c8cae073a3cee6c4e702a5374bdb73b24
+size 360318
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4242.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4242.png
new file mode 100644
index 0000000000000000000000000000000000000000..84f671e592eb947df02b91b4559aa917e7fc3913
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4242.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:06b2c6a95261098c46b06c5d1e1de5f993bc10fc0bac9ab9f8b6e0813a3879e9
+size 322060
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4243.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4243.png
new file mode 100644
index 0000000000000000000000000000000000000000..5d772491818da4c3303ed1c38bc59d8f020e3ffc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4243.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:434f41d37a6c34dcadca8969f32eb7aec56a4cea7e16005d36e5daa44f1dd64d
+size 264828
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4244.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4244.png
new file mode 100644
index 0000000000000000000000000000000000000000..c254a5afb184e4fda15749fab8fbaca45cd0c231
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4244.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8f1f5878652efd2d3ca08df3d67f16a3542e6a2b0c49b812b96e835575dbfc3a
+size 329045
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4245.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4245.png
new file mode 100644
index 0000000000000000000000000000000000000000..7d816164f9958267940b9a95ce4d18ee6e6aa5e1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4245.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2cba51664814091863c7ade6b0a445b7efbd8d9be97bf87bef4abde9742787b7
+size 360585
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4246.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4246.png
new file mode 100644
index 0000000000000000000000000000000000000000..1a2a25cee501e06f9eed7952a7c6cad1318e0bc4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4246.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:60bd3032b7222b405dd447b6c9d158f85898e27bf5de4bf8d039754109a2f6df
+size 340524
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4247.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4247.png
new file mode 100644
index 0000000000000000000000000000000000000000..bd81bcb0dc47931cf1a81115a6b8a7acfe8ba5bb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4247.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dd906472f1bc5762d978d4acfcd9747327a94970406a9b327e6751b97a3fd3e5
+size 391289
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4248.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4248.png
new file mode 100644
index 0000000000000000000000000000000000000000..9c2203984f6be04120ccbc364ab43315908e8862
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4248.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:de0dcfe77bf1e2213ec3c7ad1afd83e0da61ede722a4e09cd627e013d7abc7f1
+size 303546
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4249.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4249.png
new file mode 100644
index 0000000000000000000000000000000000000000..2ce50a680e5dd81d4207969a3af2d1c5fcfec908
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4249.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fafc97bc845935d19c37534b0aaf398c67da6d72dbb9b401d42aac15c4a76822
+size 317631
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4250.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4250.png
new file mode 100644
index 0000000000000000000000000000000000000000..1db06be9c53f6d3a398c6ba2eb84f5b67ec3b0aa
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4250.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cdbc57254884562870fe11057ebb532883ddcc554f620743ce1759b100ddb9c5
+size 342446
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4251.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4251.png
new file mode 100644
index 0000000000000000000000000000000000000000..347fa97bb40a3a1fea2ca6f6ad0b314d4866f677
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4251.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1bcbee9cd495d11e137609f0e6222d49b56c466a9b73caf825c43b24d8b39a31
+size 337831
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4252.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4252.png
new file mode 100644
index 0000000000000000000000000000000000000000..61b4d30e16a3637033f6fa001aa1901d75b3b8a2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4252.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9d974363024eb149099943c400bd075bd5c1aa8656e926ea6c2b3f88e18b0168
+size 333082
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4253.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4253.png
new file mode 100644
index 0000000000000000000000000000000000000000..bcb192b682a58f013cb362ac5939d3dfef9db229
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4253.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c1250debe943b830fc5c5619a4c7ad0fff80a126e267ead92b0ae6db34329596
+size 288141
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4254.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4254.png
new file mode 100644
index 0000000000000000000000000000000000000000..98bb8e7bef4cb2b62baeeb5fc4e3b76a56cb46ca
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4254.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7cd2ab0da49514d4f0400009c6d556524e89af31b614d2340abef32ed62f4bc2
+size 337203
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4255.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4255.png
new file mode 100644
index 0000000000000000000000000000000000000000..d961722b6aa527c737a1a12083a63c282cbb1b23
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4255.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:281e380f64d645bfd087323a1432c82c85fadb1f64a0623c62de9f457bcf4795
+size 338632
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4256.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4256.png
new file mode 100644
index 0000000000000000000000000000000000000000..62c7f4866eff1e7cd46a3e3a9f375c8638f3116a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4256.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6e8055358d3412398c9d66f9525d21a74621fc3d42df5fd8b2e446b465da95ad
+size 302265
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4257.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4257.png
new file mode 100644
index 0000000000000000000000000000000000000000..796ba6411cf85317e70861fb66b1ecdc18f60b3a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4257.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b0a3f704b9a63691dab2c8e6e0d053ddcc3dbafaebfcd3cb96d31fe9c9918c08
+size 349796
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4258.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4258.png
new file mode 100644
index 0000000000000000000000000000000000000000..638a820d31671259f51b582f4104d0d9abc8a71d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4258.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fc0f712974caa23ad6b21b6cc963052f131f62b607566214032b6bdce1cb6dd4
+size 323136
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4259.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4259.png
new file mode 100644
index 0000000000000000000000000000000000000000..3d7ee7e423fbea70058e86d0a510b27ddf61e04a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4259.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8cec934dbb1745261d312840310fcef536ed18bda7a830cc3a67788ff982e7f4
+size 328450
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4260.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4260.png
new file mode 100644
index 0000000000000000000000000000000000000000..420ffe42e796de4423bcb363add0985458570729
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4260.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8887855ecb378ff09a656b409537da2cc138ea265d3fcaa4a0893d74f5c1e51d
+size 341899
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4261.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4261.png
new file mode 100644
index 0000000000000000000000000000000000000000..69517e0fd904eb4579580ff8f18b4ae73d0bb7d1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4261.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a766c44ae8f5700d50c3c8a114082736c9ca2b822bef68465aa6adc2091eba0b
+size 226871
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4262.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4262.png
new file mode 100644
index 0000000000000000000000000000000000000000..125e8761b8e8757795a0d210ceb24763ed73284a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4262.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ca8c3dc95dad6987dea5c3573c9c966f7cc07b127ec58dfc58eeae3cb1b0a3d3
+size 285374
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4263.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4263.png
new file mode 100644
index 0000000000000000000000000000000000000000..d5c4274d05620d048451807ce931cca81ab2e8a5
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4263.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:be174dd18e0d9ca3df2ea4b9bd6139c2dfe08d613ce6cc407df7d93271b25399
+size 387988
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4264.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4264.png
new file mode 100644
index 0000000000000000000000000000000000000000..3dc18f103330e8e5024752e405b2060078bcbe49
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4264.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6c7a99c4411270d0115dc459a0db060611ed9f8f346d62e49fd76d7f0ad58305
+size 337129
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4265.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4265.png
new file mode 100644
index 0000000000000000000000000000000000000000..518f097903f0a62bed25eb7d6ca9c8f5ab033532
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4265.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6a126af1a17ce0589244453781336cfd8dfd507fe87232f85d8525f125d23cc1
+size 356098
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4266.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4266.png
new file mode 100644
index 0000000000000000000000000000000000000000..4b18942329670dbb2ea869b89b63df659fce32bc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4266.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4eb368d706751672284abae2b6cb68a6bb36fbc7cff6d5aa69011c6c2f3543f1
+size 364865
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4267.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4267.png
new file mode 100644
index 0000000000000000000000000000000000000000..1e2161be864208eabc806cebe332af20b4e46e12
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4267.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bd488d7e63dc88e399e8cd47b6c73cca9460c0435dc94967a727a52e4432fdfd
+size 344997
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4268.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4268.png
new file mode 100644
index 0000000000000000000000000000000000000000..f3e8b69d101f76202ccfd37b85d5107fcb391dae
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4268.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f327463557b69d2c8091f08ea16f36addd9e4b640e9975e549692e8147ee1346
+size 260948
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4269.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4269.png
new file mode 100644
index 0000000000000000000000000000000000000000..3d57d764253b9267ff40d3439bc5856fb1b92987
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4269.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0ebe5ce5fd322107a4c86c4b924f3bdd5266e6ce0571b07fb6dab105002c1cb0
+size 293940
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4270.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4270.png
new file mode 100644
index 0000000000000000000000000000000000000000..82833f27c547cfa8db6ae35c3948f9b5c5832fbd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4270.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9bf3450cf3f9e165a35a4fd22413bfe08403f820c2f0239ff1a74a046eeda3ce
+size 281472
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4271.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4271.png
new file mode 100644
index 0000000000000000000000000000000000000000..36bf1ff85d0a00dd1b7315afb45a744634dfd9ff
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4271.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9cd62ba3192a1c95a7f7e3b0eb02383c0ad2053fe6e4f3e2c2a76b3388111caa
+size 429300
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4272.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4272.png
new file mode 100644
index 0000000000000000000000000000000000000000..2b2e5dc7cf32451d687144169c2fae347a1606fe
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4272.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:afe415fce99cf51f913b47cbf1cc1730cdb4a19cbac59473802f2fe2eaec7acd
+size 292340
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4273.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4273.png
new file mode 100644
index 0000000000000000000000000000000000000000..0b1606b050733170b699bad9e0814f3fb44bc2ed
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4273.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8d412178f1dec6316deefb1ab961f075797323c12ff94145a3867d60c9659728
+size 361317
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4274.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4274.png
new file mode 100644
index 0000000000000000000000000000000000000000..e324a46ff84a90162709f4a47483338c1228d2f9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4274.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df92b55659e06f6f071f917a72fcc9d4e287e2f8d32c6954ef87fcce60446180
+size 264552
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4275.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4275.png
new file mode 100644
index 0000000000000000000000000000000000000000..2c703d22aefab6564e0a46f8b28cb6b7f6a3c42e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4275.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5ffc19b98dc24e2143e9841bfcb944861611190a3b4c014ed44caea6c749a577
+size 312900
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4276.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4276.png
new file mode 100644
index 0000000000000000000000000000000000000000..bbde427f4a42424de63ac3beabfc6c690cc205d1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4276.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c128cda3e7413db4441a7dc823239ab5c6f33e6644b3766317955ec7886b9bdd
+size 307672
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4277.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4277.png
new file mode 100644
index 0000000000000000000000000000000000000000..3cade2e197207af8e4af01b6c8085559f47f2bed
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4277.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dfa921ce4261a2c1d53df95f3d977e715c2be6c932c61d2a364fd58ca2366fe7
+size 306932
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4278.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4278.png
new file mode 100644
index 0000000000000000000000000000000000000000..81d4fea2fc8e3945021ea1125dbc2ef415d79373
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4278.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:312dbcb50cf4d32eba18d43524b55d1e4901cd3e61913cfe8ab90f268f636b82
+size 391446
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4279.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4279.png
new file mode 100644
index 0000000000000000000000000000000000000000..602af267784ffffeadaa7b14bc3870714ac600a7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4279.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f59f2cb1cdafdb577a0a98ec23262b8f8caafb380865a7a5f6220f724be04b15
+size 377667
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4280.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4280.png
new file mode 100644
index 0000000000000000000000000000000000000000..a8f25f7de6cc7d1d720b19446bbc669af1ad7e30
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4280.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0eb84a1da21df265ef3c8dcae41f21b0b8b75e1e9377176a5667208b3732c241
+size 323064
diff --git a/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4281.png b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4281.png
new file mode 100644
index 0000000000000000000000000000000000000000..87f0f52811851af68ec9c31bedc2ba54bc6e7608
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part4/Shortest_Path2/4281.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:239e7d0ddb05d242673face8d1fa4945326689d8ea35c3bc0fd373980600bba5
+size 315054
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Complex/315.png b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/315.png
new file mode 100644
index 0000000000000000000000000000000000000000..7d87f8db31018a39bb41e0a4f81ef9672cc2f6ee
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/315.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:64cd595d1f2ba94abd179c8535add4eabe4be3387222cd72f59c19505bffcc32
+size 343848
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Complex/328.png b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/328.png
new file mode 100644
index 0000000000000000000000000000000000000000..ccf73bc0b7eea9b1974eddc8c75dd0df55b9200c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/328.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9007e1f9ff9e147deafbe7e7d6ccb87b9fa97563f5dd90fc65a19c8e143305a2
+size 436149
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Complex/374.png b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/374.png
new file mode 100644
index 0000000000000000000000000000000000000000..e694f04b9006336e180a42ff9bab15c30d7c1088
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/374.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4c4e8118e6da87210e2ea05d990d099704128922b08843fb654a8921e8865e28
+size 259992
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Complex/465.png b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/465.png
new file mode 100644
index 0000000000000000000000000000000000000000..87aee77c71893a724654e67e065627afd8656abf
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/465.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1b3d8ce1aff2cd55466964e16da02397f0f7c573142a4cd424f4c98b669ea8b4
+size 442571
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Complex/484.png b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/484.png
new file mode 100644
index 0000000000000000000000000000000000000000..79e6a577521af02f55d359ec2e947fab6762bb19
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/484.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:825b95c634e141e2e3f62c7a610078d804a75dd6c0c547ce40172d4646f1c8ec
+size 297143
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Complex/525.png b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/525.png
new file mode 100644
index 0000000000000000000000000000000000000000..d37e6f89cc2dd5f1541ec36a7fae261718a90b6d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Complex/525.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9bb495573b00fec3efb7a104326d6d2999a525e545b5dd7af602090db7d6b300
+size 263220
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1598.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1598.png
new file mode 100644
index 0000000000000000000000000000000000000000..0b3a1f5ffd77e1c08d4a7c767acd2c62f9ef35f7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1598.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:95e1204022a3eec379a9d497871cb7ec76152d95037e591f7fcc4cc58425ddae
+size 403526
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1599.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1599.png
new file mode 100644
index 0000000000000000000000000000000000000000..8f74ad0d4ecafce32f72485a8e9d5907e39f4ca0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1599.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e503843c55fe55f6746d6914968755f8ba3d8c3ef7976e70c30917d7ac34611c
+size 403530
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1600.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1600.png
new file mode 100644
index 0000000000000000000000000000000000000000..3702ae66e35a0edd51a35a0da4512c24538612fc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1600.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:04a1603afd8fbc79c7cb771579eed1bd0754bcf9f361e150aee913d63d980541
+size 448693
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1601.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1601.png
new file mode 100644
index 0000000000000000000000000000000000000000..658eb301266b0b1f900d1bf2b3dadea6be5a7300
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1601.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6ecd288cdfec72dc7944765c8706dfbb0666108bc8bc998fe26bc2926d0715cc
+size 465508
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1604.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1604.png
new file mode 100644
index 0000000000000000000000000000000000000000..533a8564c6a0dec4bf52fd07ae3b98241d541744
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1604.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ea46c6e4a438853de75fa8bf6c51c20fe655f462235cf1a945c03e09b815173d
+size 465774
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1606.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1606.png
new file mode 100644
index 0000000000000000000000000000000000000000..eeda82a4dd781d1187332b3e2720ce32b45b17c0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1606.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0d5ba2ea9c6603fbdddfc25b3b8c412b1c4b3f8d0522ef049f1d7620e116f016
+size 326140
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1607.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1607.png
new file mode 100644
index 0000000000000000000000000000000000000000..dd6d278164d85bd73fd89920d5401dc731c9e2d7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1607.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1303908e73e7a425fe5eec7b9b9100e368d6c861118cb432c28c113c6113094f
+size 378748
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1608.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1608.png
new file mode 100644
index 0000000000000000000000000000000000000000..2b62246360867eb722581af5229af5add96ad7b3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1608.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:238bdfc7e241f00f6d1127581db53fd83ff111fefa889c0ace578be836c143bb
+size 426147
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1609.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1609.png
new file mode 100644
index 0000000000000000000000000000000000000000..41190606033a320efe1a97f6e5b7656c1ce335aa
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1609.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d142dca788edf3d88376dae0c8359838737f934535669e996c654d6988738e10
+size 455409
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1610.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1610.png
new file mode 100644
index 0000000000000000000000000000000000000000..803ec199ea8fbc243bffdde7b33845e1e82c8618
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1610.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a5cb0fc565cafe56176200374c72bb8237baa7e37bead3bdaa57e5975f121bc0
+size 380056
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1611.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1611.png
new file mode 100644
index 0000000000000000000000000000000000000000..e5d6fec32ffb1784013c663f6224dae3d5916b0b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1611.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d1ac7c20d7e5497016fb6873f035a3867a7a19ce7f56f19a6e4792f4213d13f3
+size 495292
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1612.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1612.png
new file mode 100644
index 0000000000000000000000000000000000000000..165dec8823d7a44903543cf4b572f660642c15e2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1612.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d7ceaa2c9f0b0a246ff7f457b086149080133ae622b5ce493c0d1140adfa26c3
+size 454253
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1613.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1613.png
new file mode 100644
index 0000000000000000000000000000000000000000..219f6b4f12bb60298952ff7ac4b381181c65379b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1613.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5393ad9b9c45dd430cde929116fb58710828161cc99878e7da859d92358a3b91
+size 454961
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1614.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1614.png
new file mode 100644
index 0000000000000000000000000000000000000000..e05e0fd343cd8a7d672e798bb08699c5093ca14d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1614.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:82959b5b07a1ddaff883c3ba360812013b74f3afb8d4a25d6b23d8de4002f1a8
+size 456925
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1615.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1615.png
new file mode 100644
index 0000000000000000000000000000000000000000..de96b45f3e7cf4c88c48c4e6ded4fd61ebcc21a2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1615.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3cbb5da2ab4b9e8be660fe80d6e2ac2c39d7295ea59efbbccfa86580408f684b
+size 428840
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1616.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1616.png
new file mode 100644
index 0000000000000000000000000000000000000000..2e2b4684d9d55a2c43954987fc06ecce4802b890
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1616.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:95538594df291eb019fac158cafb53c178fd24d30623986afd63813a96cc6b61
+size 409150
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1617.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1617.png
new file mode 100644
index 0000000000000000000000000000000000000000..38aea59b2a19caa81e092d789b68967fed678f42
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1617.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:76e943aa82973d44bdda90b1d60c72643469c9fea22d10c0b915a9550614bbc1
+size 376095
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1619.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1619.png
new file mode 100644
index 0000000000000000000000000000000000000000..b5fbcc160feb8e57665b8e103c4a05ecf9becb82
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1619.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1b2ec48330dcb1e42280bd6c6e0b779585fa17abf5a44b0cfb670a736a90a89d
+size 549982
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1620.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1620.png
new file mode 100644
index 0000000000000000000000000000000000000000..de7a42043f8a1901593928f977f7db7e96648ef4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1620.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ed84e5ed8180b23ca9d3cf08cb3de46617fb4d1bd2bba2a0de053e7b00825641
+size 403904
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1621.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1621.png
new file mode 100644
index 0000000000000000000000000000000000000000..c4e7c455f968e56072eaedb1d8da64285414a851
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1621.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ee3dfdb2f169040644159e1658fa53def23f75197f256d3f95b64ee0dabe9da5
+size 379203
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1622.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1622.png
new file mode 100644
index 0000000000000000000000000000000000000000..ef28d1e113ed4c1596f7d42bb2bb9776fd299bb1
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1622.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:79977ff5e6c364828a65304ca32192d0838a0b14ecc93c9c82cb9f2d75e06bc1
+size 422164
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1629.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1629.png
new file mode 100644
index 0000000000000000000000000000000000000000..c450d7d068fd10645452b722b9e6ead1b3aa5b97
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1629.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5038a36eeaf1a60cd2c764ccd5b22049c8cb09db5f0101a060da21c390863478
+size 441723
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1630.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1630.png
new file mode 100644
index 0000000000000000000000000000000000000000..fce4a65dcceaa3d6f381d2dc7cb01add19bc18a4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1630.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eaf07e3701b9e89a3e591e0c25e57248eccc81265918800e05988f0ef00e6cc2
+size 461700
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1631.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1631.png
new file mode 100644
index 0000000000000000000000000000000000000000..f8f5b6d36a011ce7790ea3cd00c6bf797d54577d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1631.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d05c4f302efd7f0415bbfc132620b3e29afc2ae6ecfd0142c734ca2941a6f790
+size 429185
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1632.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1632.png
new file mode 100644
index 0000000000000000000000000000000000000000..827041ba8cefa72929fcd204d826134a5ae96ab0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1632.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4db5ed592cf7c996c99f67aedbaf9ef8ee5e010bec93110f9075d73a8d7b50cc
+size 406490
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1633.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1633.png
new file mode 100644
index 0000000000000000000000000000000000000000..f901399e8227dcae453290f945a7348312b8171f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1633.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b81a6587181206c33f83de7c598684333ee7fb8e1ba5776792eeec4050b7a2ad
+size 428020
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1634.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1634.png
new file mode 100644
index 0000000000000000000000000000000000000000..65fbae9fb21e4ac83d6e34a05980a6798bdcc980
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1634.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:316a37b1c7587ad27243444b7c80d4184e507d4198fe6da91301e89838b136b2
+size 489425
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1636.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1636.png
new file mode 100644
index 0000000000000000000000000000000000000000..aee41f1bb232d6f3050c4e628b2603bbce91ffbb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1636.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:aea6ab1340bbeb5579cd9a03005664060555c2e3a41d8bd77b8ed28a2952e6e8
+size 326020
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1639.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1639.png
new file mode 100644
index 0000000000000000000000000000000000000000..971175a37e160b591bcf86fdbda6065dff4dbf35
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1639.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a36e9b970031ab218c70a192871f255005d0ca47187b1e2a6fbacc40b8e1ca3d
+size 318017
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1641.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1641.png
new file mode 100644
index 0000000000000000000000000000000000000000..2f5b86056f0fa66e505b162856daf79153cb9789
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1641.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:76e02c0eaa07d6f1c27f6f73934cd1f91923c96dfb6c8cae6b4273681a7a5bae
+size 355272
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1642.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1642.png
new file mode 100644
index 0000000000000000000000000000000000000000..8edbc0698c3357a90350a285f7d35318b8c674ca
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1642.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c13d0397620746c978f11c938d52b2de155beb9f3d4c65bfde1f0c9502be3b75
+size 400752
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1643.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1643.png
new file mode 100644
index 0000000000000000000000000000000000000000..f0447ca8f51fd0a8244d559e585dae2b0bfffda3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1643.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fbc3d8bc747c6f31a2e546057905b5e1becafefccf786348261300b3c7cb5fe4
+size 399614
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1644.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1644.png
new file mode 100644
index 0000000000000000000000000000000000000000..d99d100056736cb7786a1f34a6e970621d194aaf
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1644.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f22c23688cde710ead6ede08d47fbb41ef40e87c0fd13afabf273b8ab6c97f0f
+size 399631
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1645.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1645.png
new file mode 100644
index 0000000000000000000000000000000000000000..69d7aaa851f1392fcbe5a7dbdda533ed2595360f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1645.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4d2764d109f40da014c9a988cf6fd2339496a7ef60903ce429b1488d99066273
+size 379023
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1647.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1647.png
new file mode 100644
index 0000000000000000000000000000000000000000..1109e475b4b8ff619adef2bc4a524f3cc7dbba7f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1647.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:17b7307d64350d336c6cfbc09f31ec8529d381917efad8c1ad9e7ea1d09951c6
+size 392538
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1648.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1648.png
new file mode 100644
index 0000000000000000000000000000000000000000..49782d20d2964fca80498d74412c54577ea7770f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1648.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c4fee2d1080afdc2c5323baa5bdcaffd105a4e20510428df32a9100ddafa7d91
+size 309533
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1649.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1649.png
new file mode 100644
index 0000000000000000000000000000000000000000..d2cbdffe9366f7c377a1051772d52350f5769c9a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1649.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dad89a66222925c0b660ca9239d07f5d32ebb0c5832bd59e5d4f551ab66e3975
+size 421469
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1650.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1650.png
new file mode 100644
index 0000000000000000000000000000000000000000..3a851dc9d579e87c91d4b1d85a34b743284d068a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1650.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:66fee29e57c5f7ca9837bd72507fadd9e65067be859496f0aea284cfdc1b2afc
+size 462326
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1651.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1651.png
new file mode 100644
index 0000000000000000000000000000000000000000..d491f618f580a8ac6eeb05dde7463d9d11725e7a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1651.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:577488c7f66b9d03fe77c2f8c0b82ebf17767446b4a1bc4b9c0c02bbf3e88fb0
+size 313818
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1652.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1652.png
new file mode 100644
index 0000000000000000000000000000000000000000..f9cb73d108eedda7dca1c482773cf62be6797f76
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1652.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5ca8a1c077ce9fd0a912759573d2b7c72de004b63a5d2a1464840cb361210792
+size 385705
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1653.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1653.png
new file mode 100644
index 0000000000000000000000000000000000000000..87ebc8b82b69fbc71ee280ee98dbb7a929fda82c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1653.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9c2370fef303331ecbf427e96b4e3f5d48793d6eab755143ff7f7cae7e705ce0
+size 346749
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1654.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1654.png
new file mode 100644
index 0000000000000000000000000000000000000000..baba74d99ec3ddd20ad4215f5e9ae69b832a450e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1654.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:858cb364c2c697d4bc7886c90bb8bc210521e8c45e40cda365b628fe1fc93677
+size 517836
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1657.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1657.png
new file mode 100644
index 0000000000000000000000000000000000000000..12c2d6abc69b8fb4b43a654babdb2577ad5be496
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1657.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6a71c2012d853b1949348be7f712c42eee73820dc47337cd0bc1ad259b5cfa05
+size 433750
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1658.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1658.png
new file mode 100644
index 0000000000000000000000000000000000000000..c32df6f21be3ad49691ec238125093e9678a13a7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1658.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1ba937958d5c58c418277f6c22fa8729cabb6e2dbd4f5ef2fc685d414899e7bb
+size 410422
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1659.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1659.png
new file mode 100644
index 0000000000000000000000000000000000000000..4e2118b5c8704809942250ef1e5d7d0033082599
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1659.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a0e2125f00feb1977e9a5638bc76209362b42d28997e570ed0726b477250468c
+size 463601
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1661.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1661.png
new file mode 100644
index 0000000000000000000000000000000000000000..f71f31e63fce7b528fb566b63d7146aa5cfaffe0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1661.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:aa8c1a7a520ae1c3f58fdf3ef0f555d8e76fa251c89c4377d16d64b5862eb426
+size 391269
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1662.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1662.png
new file mode 100644
index 0000000000000000000000000000000000000000..5b0b35022789ded4eef0fc8253e4d9407db44280
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1662.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7b9d4528549cc480be1dc4648189fa4650fe264fa78b539f581c990f89d1f664
+size 373204
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1663.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1663.png
new file mode 100644
index 0000000000000000000000000000000000000000..33e2afe5396ce8c26a5d387d50db803ad20e71bc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1663.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:895609f79fd6a9463688955ce8d1294a62c0f9db78503d46a25f29fa816d7a7a
+size 374110
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1664.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1664.png
new file mode 100644
index 0000000000000000000000000000000000000000..dd55c2521ec02f87985d9cbb632a139d14d1ef2a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1664.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fd3582e2e1e2a0c68993b77dfafabecb10b301eeba2b996c5ba8c6cf98a8c315
+size 430023
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1665.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1665.png
new file mode 100644
index 0000000000000000000000000000000000000000..8758f439575bcfce8d6b3f46e2579b0d282b12c6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1665.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:190488b9a1c8634ffd842992b3eee45abce2e69b4858142d8e2d83418c1bb29b
+size 352049
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1666.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1666.png
new file mode 100644
index 0000000000000000000000000000000000000000..19b4f46afe7d553e5e52f0f939518afc4c38be7f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1666.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f78dffbf82b8707dd7a56803af9c96a6c4c48405d623c92d32da840a4501699e
+size 314721
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1667.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1667.png
new file mode 100644
index 0000000000000000000000000000000000000000..77217047db6dca86de2f8f80afc342e0f5eccc3c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1667.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:001c413f85d4a2a97d6c0357b7fef3cabe7fcde3feaacc633727580956219bc8
+size 391578
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1668.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1668.png
new file mode 100644
index 0000000000000000000000000000000000000000..8bd41b95038b018ab9830f4c35769ed2ecf7e372
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1668.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b7ea9c60f97cca905d7227fde9873f7458ed6a7d43a12ab57e53418e379e6b98
+size 429764
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1669.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1669.png
new file mode 100644
index 0000000000000000000000000000000000000000..69040f2e00c59412489c523c543bbca1d3a5ba2f
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1669.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b15395acdfee595e12e07bfb16bf1bc933528713ddc274b8fed6b7440f5b4c67
+size 516923
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1673.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1673.png
new file mode 100644
index 0000000000000000000000000000000000000000..af9f80b765ec4fe32a8e6e4f8bec5969aafb57d3
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1673.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:840f44252338d49985251e0bcc98596230a6861a11f2816596320560a22f5352
+size 498613
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1674.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1674.png
new file mode 100644
index 0000000000000000000000000000000000000000..65f096163d016094065758acd42faa990ddf6d9c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1674.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e06944185d853e0efc5f0614ac1f7ca82bc51a8942508ada3b8d92e52fad5b40
+size 408049
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1676.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1676.png
new file mode 100644
index 0000000000000000000000000000000000000000..88a0c628b9a6b0a6c75f59fc6f4d4cb51b14919a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1676.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:54d075a5fa4914538c7a94f8d8ba4303f4aecafa0540b20bf7b731802555c19f
+size 417168
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1677.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1677.png
new file mode 100644
index 0000000000000000000000000000000000000000..505b6e766985055553d1b56645f796cbfe7dd5b8
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1677.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d003ed46d8bb64d1c26dbb11d861e3b9676f9febe867fa7d7db75e768ff08cf9
+size 456669
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1678.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1678.png
new file mode 100644
index 0000000000000000000000000000000000000000..2849795e1e8ca1963d0284e5dbae5df88b6e21bd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1678.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:edce567b4b3ff4879f29e6cedec01fa9ffcf64dd89b5887c060fcef418ce6c65
+size 482845
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1679.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1679.png
new file mode 100644
index 0000000000000000000000000000000000000000..50b30a2f04410299dd9aaad42e604627bd95d6e9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1679.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c3492b793cdce0f4f288717282a6e0408b30a3fbc26d2e1c085f4040d823234c
+size 474010
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1681.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1681.png
new file mode 100644
index 0000000000000000000000000000000000000000..de3a2ebb6a52fb8a9bb5b1c51aa5eb17d654c2bb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1681.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4056dd9f780b724697f2fad3bafeaed6b3bd315bc099f1f360d78538d523c382
+size 390051
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1682.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1682.png
new file mode 100644
index 0000000000000000000000000000000000000000..ce0e360966336e855fb0a47163eccb681866db1a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1682.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9beaec6ff6ddd31b3a1e328b2215fb769c91053906468f3486e509c72401845b
+size 353418
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1683.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1683.png
new file mode 100644
index 0000000000000000000000000000000000000000..b301da8b1ba072553fd01c23fa59f99696aff0bd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1683.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:65fc82a26f530e4b8761d9cd1e2701435ae5e32d4ab5bce4ea080ba6afa1f546
+size 444816
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1684.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1684.png
new file mode 100644
index 0000000000000000000000000000000000000000..528ca947b932cdf2a95c8972bc0eea07252d517d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1684.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4cf1b3bdce3378605bc05be1c0c89700346a47eae76565ca73e314e4bedfdbbe
+size 535418
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1687.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1687.png
new file mode 100644
index 0000000000000000000000000000000000000000..72170aec12aafe5d3202a496f4217dd5d15d188b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1687.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c8cc366be720b245739ff8e5722c8c92fb78b9bcc3e135cbb45f28e85904a2b9
+size 515753
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1688.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1688.png
new file mode 100644
index 0000000000000000000000000000000000000000..9bd2da62524ab344fb3d173207e5e71295b530b6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1688.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8a1b136849f189ec2b04084d13e262c8089c93a6ac3882156662cc0c45efd26e
+size 505337
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1689.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1689.png
new file mode 100644
index 0000000000000000000000000000000000000000..186e2ecee3b2343f2eb86579bef8caac8de7b63c
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1689.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8e421193e74310d3e44683e418e99dea263de59bcb0c4fac6a9f507048a19984
+size 417739
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1690.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1690.png
new file mode 100644
index 0000000000000000000000000000000000000000..11de84de02965ca8d6e7db2acea8ca9058c9c2a7
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1690.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9c7d3f37fe5df971a7892f8821df90a72b9951930d3b9e3fd60ec2896814251d
+size 434605
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1691.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1691.png
new file mode 100644
index 0000000000000000000000000000000000000000..99e84ea7cd0d915dae57a6c9fe269f1a87ff76ed
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1691.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:10cf280332e850bd19d3cbb002e5e439185614a1e89a553ec5f5adc41501a9bb
+size 465792
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1692.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1692.png
new file mode 100644
index 0000000000000000000000000000000000000000..807607d938c248c7902b65acb92bb95231872a10
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1692.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a34668d59e84ffa208feb0c84c8d2e3608d3d535d10ab660dd6c8e4f1c7b9bb0
+size 446400
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1693.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1693.png
new file mode 100644
index 0000000000000000000000000000000000000000..b4035286b62be014c2a6e1f38a3758014b1ade4d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1693.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d1e3069f321c6e5777e808d54868dc4bf2cd13e149653c3470f5040b6a371e02
+size 442510
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1694.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1694.png
new file mode 100644
index 0000000000000000000000000000000000000000..a36d042403a5422adc0a8e21a35d17d9e2bab171
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1694.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7d087593ad4397ae82cfffed5f8c7f0b86dbd8580db8432285098f18cec6d9b7
+size 343400
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1696.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1696.png
new file mode 100644
index 0000000000000000000000000000000000000000..5b91e07d5b541ab403f344a371e74d51c5869d07
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1696.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5cfdef80424faeca90c46896729b0a2dc0a3b46260cd5310c629f393357745d1
+size 445747
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1697.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1697.png
new file mode 100644
index 0000000000000000000000000000000000000000..702aa02bfc3f0f4d4c56b3cc1ddc5a1ef7465fbe
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1697.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a2e1e29c0656f706b6232d80d4ea89fa78753472051f1e794c2f1eff6c48afb5
+size 411503
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1698.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1698.png
new file mode 100644
index 0000000000000000000000000000000000000000..7d25c43f077d0016b5476da8963f6dadcd762281
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1698.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1a6fe165014092dbf97dd096980f82051be19cec8273e78c927c9e9ba26f0bc5
+size 358452
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1700.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1700.png
new file mode 100644
index 0000000000000000000000000000000000000000..ff07a9ffdf4035ddc531e64a873ef8809e2a9096
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1700.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:81c0e16e45b660d029f6fcb5c18f4d6b8009bb749a3c6afc4bfdbe51c09d0c37
+size 454509
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1702.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1702.png
new file mode 100644
index 0000000000000000000000000000000000000000..c469153b4c227cbdfc9806fa2c8b0b6e65ed1416
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1702.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fe70450bbe2ffe6faccfb4212c3e9e56ff453326a9c51fd49ea9e5185dcb2f84
+size 443558
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1703.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1703.png
new file mode 100644
index 0000000000000000000000000000000000000000..0c4be3c1fed085b29828b4b6a9502b8f02115785
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1703.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9da439bf837eb72dd8c1bdd5b37cb50cfa889612df0ae01eedd486a97681f833
+size 315112
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1704.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1704.png
new file mode 100644
index 0000000000000000000000000000000000000000..a8f5f95a91d7c4061ccde690909f06c1510e9765
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1704.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fa30c7f77ae272c3e538080eac604a9bee347265a38adb478e9bcdb490894eea
+size 519173
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1705.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1705.png
new file mode 100644
index 0000000000000000000000000000000000000000..720f53b40c6ada8d1d8d2e95c5e0c88404e44c9d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1705.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:53f94a62984795b3e3fe039d6655a2158ba93fe655c2e3004d2c5ec0daa93f26
+size 447501
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1706.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1706.png
new file mode 100644
index 0000000000000000000000000000000000000000..c00c779a652f665a9544bc66356f4d98e30007fb
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1706.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e2e910ac4a01447be4605d1d8623c72150a565dc9ec09d06785276b8160537f0
+size 386129
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1707.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1707.png
new file mode 100644
index 0000000000000000000000000000000000000000..b6fb5098e73c5a2cdb9bc279758d296820bde330
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1707.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:688f359c2ccdeeb02afe77e9a0d57c7e025abf48902cf5c4dd34bc1b25540ec4
+size 436607
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1708.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1708.png
new file mode 100644
index 0000000000000000000000000000000000000000..81c827f3f5988fc16a31c098edf6ce0ec5fa899e
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1708.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:43d0f1665bf3eb871e4a9a572c174a514c90ac1487e53cc050575d552079d147
+size 501029
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1709.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1709.png
new file mode 100644
index 0000000000000000000000000000000000000000..3154c221eb53cc11a0d4a4ef4f89eceba1740e6d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1709.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a05e1aa8f04254705c9c142eb9c677a25e658738c815047ccc71821163f67aaf
+size 426171
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1710.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1710.png
new file mode 100644
index 0000000000000000000000000000000000000000..838caaa74a4c83333f0f42483e356c417c27ae06
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1710.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:79a8a57d8030352cc2c3114e9df30d511fc3d942eda9ffd6f774fabac8273576
+size 463212
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1711.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1711.png
new file mode 100644
index 0000000000000000000000000000000000000000..645843a0a92464bfcc07cda2e010cc7af6119704
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1711.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:aa0f4a23f45caf7a41ef4857bae6e4258c963751f323c18e20bf60cf0f8029d6
+size 348912
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1713.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1713.png
new file mode 100644
index 0000000000000000000000000000000000000000..b2b76aca97b3d935ec7dc25d1704ade46fec6333
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1713.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:234f64f7e015983a60187361d609eafd069ce62fe3eb2b2e9bef5ce6ef4f1141
+size 480739
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1714.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1714.png
new file mode 100644
index 0000000000000000000000000000000000000000..66a6adf1d014486bd48e69e0783cf0cc507bc0e4
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1714.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5c583688bfd152590344ee555eea602802f4580547a251f22e0757ee1cf3f872
+size 501239
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1715.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1715.png
new file mode 100644
index 0000000000000000000000000000000000000000..6b38bec5649e6bcacd32c2359ee2c8c62a89b7ff
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1715.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7e20116f5eaf76ab44813b71053d505c05f1d40bc1f14d6d8081d1ed208fff21
+size 484097
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1716.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1716.png
new file mode 100644
index 0000000000000000000000000000000000000000..21c3bb5c5aa801ee57d156282e750076732795b0
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1716.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fd9a29d902f7381d58a0ac72300b3dd33304ec66e36f9629f19714ae80fa524f
+size 502339
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1718.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1718.png
new file mode 100644
index 0000000000000000000000000000000000000000..6c7ba127d3e67d04a5ddff255682854e53685d91
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1718.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b261c40cfc5a24452c2823e0b245c92c2e03a155eebe3ab7388179bce79b122f
+size 433908
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1719.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1719.png
new file mode 100644
index 0000000000000000000000000000000000000000..879c422ad627ec683e10ee02049e9f84dd4ee31d
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1719.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a692b657ff150088986855b9a926953cbc5f65ff73f4e732d4f27e3d8463be88
+size 467194
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1720.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1720.png
new file mode 100644
index 0000000000000000000000000000000000000000..58c649cdf1e009226b54a507d8e9d2cd445579cc
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1720.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:32032d41ef9e71ff23eb0407e40bd07755bafaa33a18e609a4d5a512f1635695
+size 402802
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1721.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1721.png
new file mode 100644
index 0000000000000000000000000000000000000000..6f0ba1a58856e78e16a304c50c85c603d780b8c9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1721.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2f9923d734dc21b12c674a43297c680f85861dd289a9ee87207d5086b3b0aeb0
+size 430957
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1722.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1722.png
new file mode 100644
index 0000000000000000000000000000000000000000..470c109a3412ea52650abad0f7731c8fc65eafdd
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1722.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f01437fafcd6242cf045fb506894d155edc30ee021003bfa093c290270157aca
+size 351388
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1723.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1723.png
new file mode 100644
index 0000000000000000000000000000000000000000..2e732cce4620bbffd48e553a79b9087a2cfe5ce6
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1723.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6087dfb1bb431b675529ffddd6b4ddd504ada091f236b57f3847ee24a023db30
+size 450983
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1725.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1725.png
new file mode 100644
index 0000000000000000000000000000000000000000..b31639f8f107723dab4bfa91c6a34f8535239bf5
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1725.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:89eaa6982b53a195e6ed09c61f9a37a5c01c209af591c5eff90c3dc00d03b14e
+size 418931
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1726.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1726.png
new file mode 100644
index 0000000000000000000000000000000000000000..56d7807178f84b7b6b01900b736b5bed7aab3383
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1726.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7c203503d3786ca2c9f723874b83a9a9546b586ea57034418e6761f6d0cd59d1
+size 464662
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1727.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1727.png
new file mode 100644
index 0000000000000000000000000000000000000000..65649fbe80266a38fc711c3f2547dfc89d81a6a9
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1727.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ae826797bcbe6cd127271ae7d574f305d0180bf53e52aa9f9d2a1382ce19e612
+size 504871
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1728.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1728.png
new file mode 100644
index 0000000000000000000000000000000000000000..313323c52d3afd7784716379eda85e2305352df2
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1728.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8ba51ddb55620fe0b03a92e192417526b830fafdb730e9fdfcdc68d77f0ccbc1
+size 516617
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1729.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1729.png
new file mode 100644
index 0000000000000000000000000000000000000000..5a4abcdf38228760a1dcc63d211d2fb2f624b979
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1729.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:43bac11debe44f8e5d80f7ddd8e858218b829feeaa970808a996e43738bedef0
+size 488905
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1730.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1730.png
new file mode 100644
index 0000000000000000000000000000000000000000..cd09002cd66db98e8ed575211723689fd8616e35
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1730.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2070e3489d75ee91d59e41f3ae5b9e4131f70b6a61d6c32093bd1c9b2af5dd4b
+size 380426
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1731.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1731.png
new file mode 100644
index 0000000000000000000000000000000000000000..4b04165475abca8cf5302f1feac05c430c52887a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1731.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c4030376363c50d2a3760416be21d5c2dbc22068f6ff10b7ddf1524bfd0c3607
+size 335846
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1732.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1732.png
new file mode 100644
index 0000000000000000000000000000000000000000..1978a60a2f8ea3c9b57677160dba957f9ed6f351
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1732.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2855beb20163785c4dfcd3a65f73c5afb59e8b81452ce7e382b937225bf56510
+size 394613
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1733.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1733.png
new file mode 100644
index 0000000000000000000000000000000000000000..953372fc2c5ce9397f29e507107c2b63c9794022
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1733.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5e1e71cd1523622029f0a008db4049ee43b2f1a040218e43255521c9474bd74e
+size 363764
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1734.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1734.png
new file mode 100644
index 0000000000000000000000000000000000000000..8b731579fee2ab2fa494435481d18c76acb2ef1a
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1734.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6dc3e112997b987e3de695ab20d62d8135a3f6fd10bfeaa443554464c50bc7ba
+size 451267
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1735.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1735.png
new file mode 100644
index 0000000000000000000000000000000000000000..550ab595b37f65a20b575b0ad531933c74233437
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1735.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d680a16bb7de8839e644f32db40070e8a6515d54ad19256dd7558ff5a18f8de7
+size 446937
diff --git a/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1736.png b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1736.png
new file mode 100644
index 0000000000000000000000000000000000000000..84d5ddf1140b66cf0379ef846bb8929ee3c6100b
--- /dev/null
+++ b/NextStep-1-HF/NextStep-1/cn/Part6/Visual_Text_CN/1736.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f4ba4eb269be4c753b9ae68b458b3ceefd7ec0e855b1b6e75ab261ffc4006be8
+size 474006