diff --git a/README.md b/README.md
index 3865a55..041733a 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # AI4Math-MathTool
 
+[中文说明](README.zh-CN.md)
+
 AI4Math-MathTool is the VeryMath repository for standalone mathematical tools
 with stable data contracts, executable helpers, and independently testable
 runtime behavior.
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 53a16a5..7dac900 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -1,5 +1,7 @@
 # AI4Math-MathTool
 
+[English](README.md)
+
 AI4Math-MathTool 是 VeryMath 用于承载独立数学工具的仓库。进入本仓库的工具应具有
 稳定的数据合同、可执行脚本和可独立验证的运行行为。