diff --git a/README.md b/README.md
index 9f3119b7..5430f130 100644
--- a/README.md
+++ b/README.md
@@ -502,6 +502,7 @@ To get started, simply fork this repo. Please refer to [CONTRIBUTING.md](CONTRIB
 - [Natural Language Processing using scikit-learn](https://towardsdatascience.com/natural-language-processing-count-vectorization-with-scikit-learn-e7804269bb5e)
 - [Code a Taylor Swift Lyrics Generator](https://towardsdatascience.com/ai-generates-taylor-swifts-song-lyrics-6fd92a03ef7e)
 - [Mask detection using PyTorch Lightning](https://towardsdatascience.com/how-i-built-a-face-mask-detector-for-covid-19-using-pytorch-lightning-67eb3752fd61)
+- [Create your first PPO (Proximal Policy Optimization) in Python: Deep Reinforcement Learning Course in Chinese](https://github.com/opendilab/PPOxFamily)
 
 ### Miscellaneous: