diff --git a/README.md b/README.md
index bdba6a2..0cd6362 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ NNoM is a high-level linference Neural Network library specifically for microcon
 The structure of NNoM is shown below:
 ![](docs/figures/nnom_structure.png)
 
-Discussions welcome using [issues](https://github.com/majianjia/nnom/issues). Pull request welcome. 
+Discussions welcome using [issues](https://github.com/majianjia/nnom/issues). Pull request welcome. QQ/TIM group: 763089399.
 
 ## Licenses