diff --git a/en/src/SUMMARY.md b/en/src/SUMMARY.md
index e60b82d..f0330e9 100644
--- a/en/src/SUMMARY.md
+++ b/en/src/SUMMARY.md
@@ -1,7 +1,7 @@
 # Summary
 
-- [Why Exercise.rs](why-exercise.md)
-- [Variables todo](variables.md)
+- [About Exercise.rs](why-exercise.md)
+- [Variables](variables.md)
 - [Basic Types todo](basic-types/intro.md)
   - [Numbers](basic-types/numbers.md)
   - [Char, Bool and Unit](basic-types/char-bool-unit.md)
diff --git a/en/src/why-exercise.md b/en/src/why-exercise.md
index fe73d76..b9ce44c 100644
--- a/en/src/why-exercise.md
+++ b/en/src/why-exercise.md
@@ -1,4 +1,4 @@
-# Why Exercise.rs
+# About exercise.rs
 > 中文版 [传送门](https://zh.exercise.rs)
 
 Greetings and welcome to `exercise.rs`， If you have the following problems: