ch --> en

app.py

@@ -835,7 +835,7 @@ if __name__ == '__main__':
     parser.add_argument("--save_image", default=False,
                         help="save image? It takes a minute or two to save a picture! But pretty")
     parser.add_argument("--file_format", type=str, default='md', help="导出的文件格式，如果存图片的话，最好是md，如果不是的话，txt的不会乱")
-    parser.add_argument("--language", type=str, default='zh', help="The other output lauguage is English, is en")    
+    parser.add_argument("--language", type=str, default='en', help="The other output lauguage is English, is en")
     import time
 
     start_time = time.time()