Update README.md

README.md

@@ -46,6 +46,7 @@ You can also scan the QR code to join our wechat group or follow our wechat offi
 | ------------ | ----------------------- |
 |![wechat](https://k2-fsa.org/zh-CN/assets/pic/wechat_group.jpg) |![wechat](https://k2-fsa.org/zh-CN/assets/pic/wechat_account.jpg) |
 
+
 ## 3. Citation
 
 ```bibtex
@@ -62,4 +63,8 @@ You can also scan the QR code to join our wechat group or follow our wechat offi
       journal={arXiv preprint arXiv:2507.09318},
       year={2025}
 }
-```
+```
+
+## 4. License
+Our code is released under the Apache 2.0 License. The pre-trained model is licensed under the CC-BY-NC due to constraints from its training data (Emilia).
+