diff --git a/README.md b/README.md
index 8b5368e..b3bc01e 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,8 @@ Another p2p network library in Go. Committed to direct communication between dev
 - Cross-platform compatibility (linux/windows/macOS/iOS/android)
 
 ## Get Started
+> [!NOTE]
+> Time synchronization between nodes is crucial; the difference should not exceed 5 seconds
 ### p2p vpn
 ```sh
 # node1
diff --git a/README_zh_CN.md b/README_zh_CN.md
index 0a23436..932145b 100644
--- a/README_zh_CN.md
+++ b/README_zh_CN.md
@@ -11,7 +11,8 @@
 - 跨平台
 
 ## 快速开始
-
+> [!NOTE]
+> 节点间时间同步非常重要，通常相差不能超过 5 秒
 ### p2p vpn
 ```sh
 # 节点1