diff --git a/en/src/SUMMARY.md b/en/src/SUMMARY.md
index d578f55..17e7cb9 100644
--- a/en/src/SUMMARY.md
+++ b/en/src/SUMMARY.md
@@ -2,8 +2,6 @@
 
 [**Introduction**](introduction.md)
 
-[**中文**](../../zh/src/introduction.md)
-
 ---
 
 # Part I: The Vision
diff --git a/zh/src/SUMMARY.md b/zh/src/SUMMARY.md
index 0cbb5af..c6a3018 100644
--- a/zh/src/SUMMARY.md
+++ b/zh/src/SUMMARY.md
@@ -2,8 +2,6 @@
 
 [**引言**](introduction.md)
 
-[**English**](../../en/src/introduction.md)
-
 ---
 
 # 第一部分：愿景 (The Vision)