update readme

README.md

@@ -149,9 +149,12 @@ For Image-Video Mixture Fine-tuning, make sure to enable the --group_frame optio
   - [ ] fp8 support
   - [ ] faster load model and save model support
 
-## Contributing
+## 🤝 Contributing
 
-We welcome all contributions. Please add corresponding test case in `tests` folder and run `bash format.sh` before submitting a pull request.
+We welcome all contributions. Please run `bash format.sh` before submitting a pull request.
+
+## 🔧 Testing
+Run `pytest` to verify the data preprocessing, checkpoint saving, and sequence parallel pipelines. We recommend adding corresponding test cases in the `test` folder to support your contribution.
 
 ## Acknowledgement
 We learned and reused code from the following projects: [PCM](https://github.com/G-U-N/Phased-Consistency-Model), [diffusers](https://github.com/huggingface/diffusers), [OpenSoraPlan](https://github.com/PKU-YuanGroup/Open-Sora-Plan), and [xDiT](https://github.com/xdit-project/xDiT).