diff --git a/content/_index.zh.md b/content/_index.zh-CN.md
similarity index 100%
rename from content/_index.zh.md
rename to content/_index.zh-CN.md
diff --git a/content/about/index.md b/content/about/index.en.md
similarity index 100%
rename from content/about/index.md
rename to content/about/index.en.md
diff --git a/content/about/index.zh.md b/content/about/index.zh-CN.md
similarity index 100%
rename from content/about/index.zh.md
rename to content/about/index.zh-CN.md
diff --git a/content/archives/index.zh.html b/content/archives/index.zh-CN.html
similarity index 100%
rename from content/archives/index.zh.html
rename to content/archives/index.zh-CN.html
diff --git a/content/post/2019-08-08-text-and-typography/index.zh.md b/content/post/2019-08-08-text-and-typography/index.zh-CN.md
similarity index 100%
rename from content/post/2019-08-08-text-and-typography/index.zh.md
rename to content/post/2019-08-08-text-and-typography/index.zh-CN.md
diff --git a/content/post/2019-08-08-write-a-new-post/index.zh.md b/content/post/2019-08-08-write-a-new-post/index.zh-CN.md
similarity index 100%
rename from content/post/2019-08-08-write-a-new-post/index.zh.md
rename to content/post/2019-08-08-write-a-new-post/index.zh-CN.md
diff --git a/content/post/2019-08-09-getting-started/index.zh.md b/content/post/2019-08-09-getting-started/index.zh-CN.md
similarity index 100%
rename from content/post/2019-08-09-getting-started/index.zh.md
rename to content/post/2019-08-09-getting-started/index.zh-CN.md
diff --git a/content/post/2019-08-11-customize-the-favicon/index.zh.md b/content/post/2019-08-11-customize-the-favicon/index.zh-CN.md
similarity index 100%
rename from content/post/2019-08-11-customize-the-favicon/index.zh.md
rename to content/post/2019-08-11-customize-the-favicon/index.zh-CN.md
diff --git a/hugo.toml b/hugo.toml
index c802f0f..0f22fae 100644
--- a/hugo.toml
+++ b/hugo.toml
@@ -5,7 +5,7 @@ defaultContentLanguage = "en"
 defaultContentLanguageInSubdir = false
 
 [languages]
-  [languages.zh]
+  [languages.zh-CN]
     languageName = "中文"
     languageCode = "zh-CN"
     weight = 1
@@ -78,31 +78,31 @@ path = "github.com/gohugoio/hugo-mod-bootstrap-scss/v5"
   weight = 50
   pre = "fa-info-circle"
 
-[[languages.zh.menu.main]]
+[[languages.zh-CN.menu.main]]
   name = "主页"
   url = "/"
   weight = 10
   pre = "fa-house"
 
-[[languages.zh.menu.main]]
+[[languages.zh-CN.menu.main]]
   name = "分类"
   url = "/categories/"
   weight = 20
   pre = "fa-stream"
 
-[[languages.zh.menu.main]]
+[[languages.zh-CN.menu.main]]
   name = "标签"
   url = "/tags/"
   weight = 30
   pre = "fa-tags"
 
-[[languages.zh.menu.main]]
+[[languages.zh-CN.menu.main]]
   name = "归档"
   url = "/archives/"
   weight = 40
   pre = "fa-archive"
 
-[[languages.zh.menu.main]]
+[[languages.zh-CN.menu.main]]
   name = "关于"
   url = "/about/"
   weight = 50