diff --git a/README.md b/README.md
index 2b3e3ff..7354eda 100644
--- a/README.md
+++ b/README.md
@@ -46,3 +46,6 @@
 
 ````
 
+## 背景资料
+自豪地引用[**ovo.h**](https://github.com/eeeneko/arduino-ovo)搭建非阻塞Arduino程序框架！
+