diff --git a/guide/Linux/Challenges/README.md b/guide/Linux/Challenges/README.md
index 431409f..fd307e6 100644
--- a/guide/Linux/Challenges/README.md
+++ b/guide/Linux/Challenges/README.md
@@ -1,5 +1,5 @@
 ---
-title: Tools
+title: Challenges
 icon: lightbulb
 author: evilsp
 ---
diff --git a/guide/Linux/Core/README.md b/guide/Linux/Core/README.md
index 51c431f..1e51569 100644
--- a/guide/Linux/Core/README.md
+++ b/guide/Linux/Core/README.md
@@ -1,9 +1,10 @@
 ---
-title: Tools
+title: Core
 icon: lightbulb
 author: evilsp
 ---
 
+# 本文件夹应该包含什么内容?
 # 本文件夹应该包含什么内容?
 
 本文件夹下只应该包含 Linux 内核及其相关内容
diff --git a/guide/Linux/Filesystem/README.md b/guide/Linux/Filesystem/README.md
index 294ee40..579553e 100644
--- a/guide/Linux/Filesystem/README.md
+++ b/guide/Linux/Filesystem/README.md
@@ -1,5 +1,5 @@
 ---
-title: Tools
+title: Filesystem
 icon: lightbulb
 author: evilsp
 ---
diff --git a/guide/Linux/Network/README.md b/guide/Linux/Network/README.md
index a26bc67..c812d7a 100644
--- a/guide/Linux/Network/README.md
+++ b/guide/Linux/Network/README.md
@@ -1,5 +1,5 @@
 ---
-title: Tools
+title: Network
 icon: lightbulb
 author: evilsp
 ---