Update README.md

README.md

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 ```bash
 python run/json2png.py
 ```
-### Citation
-Please considering cite our paper if you find this work useful!
+### Data and Code Availability
+The CVRP dataset and accompanying codes are publicly available from Hugging Face at https://huggingface.co/datasets/CVRPDataset/CVRP & https://huggingface.co/CVRPDataset/Model, 
+and Bioinformatics service in Nanjing Agricultural University at http://bic.njau.edu.cn/CVRP.html.
 
 ### Acknowledgements
 We thank Mr.Zhitao Zhu, Dr. Weijie Tang, and Dr. Yunhui Zhang for their technical support.