diff --git a/config/locales/app.admin.zh.yml b/config/locales/app.admin.zh.yml
index e01eb3ca3..e79f51951 100644
--- a/config/locales/app.admin.zh.yml
+++ b/config/locales/app.admin.zh.yml
@@ -1,4 +1,4 @@
-zh-CN:
+zh:
   app:
     admin:
       edit_destroy_buttons:
diff --git a/config/locales/app.logged.zh.yml b/config/locales/app.logged.zh.yml
index 33bcc9370..ded98fffe 100644
--- a/config/locales/app.logged.zh.yml
+++ b/config/locales/app.logged.zh.yml
@@ -1,4 +1,4 @@
-zh-CN:
+zh:
   app:
     logged:
       #user's profile completion page when logging from an SSO provider
diff --git a/config/locales/app.public.zh.yml b/config/locales/app.public.zh.yml
index 0a3cd62d7..6e935c3f9 100644
--- a/config/locales/app.public.zh.yml
+++ b/config/locales/app.public.zh.yml
@@ -1,4 +1,4 @@
-zh-CN:
+zh:
   app:
     public:
       #header and "about" page
diff --git a/config/locales/app.shared.zh.yml b/config/locales/app.shared.zh.yml
index 46134aef4..1e94f37c1 100644
--- a/config/locales/app.shared.zh.yml
+++ b/config/locales/app.shared.zh.yml
@@ -1,4 +1,4 @@
-zh-CN:
+zh:
   app:
     shared:
       #translations of common buttons
diff --git a/config/locales/base.zh.yml b/config/locales/base.zh.yml
index a2dc10000..9c86a4e8a 100644
--- a/config/locales/base.zh.yml
+++ b/config/locales/base.zh.yml
@@ -1,4 +1,4 @@
-zh-CN:
+zh:
   time:
     formats:
       #See http://apidock.com/ruby/DateTime/strftime for a list of available directives
diff --git a/config/locales/devise.zh.yml b/config/locales/devise.zh.yml
index d8bffc082..3024e73ba 100644
--- a/config/locales/devise.zh.yml
+++ b/config/locales/devise.zh.yml
@@ -1,5 +1,5 @@
 #Additional translations at https://github.com/plataformatec/devise/wiki/I18n
-zh-CN:
+zh:
   devise:
     confirmations:
       confirmed: "您的账户已成功确认。"
diff --git a/config/locales/mails.zh.yml b/config/locales/mails.zh.yml
index 295341b2a..1f7b6e00a 100644
--- a/config/locales/mails.zh.yml
+++ b/config/locales/mails.zh.yml
@@ -1,4 +1,4 @@
-zh-CN:
+zh:
   layouts:
     notifications_mailer:
       see_you_later: "再见 {GENDER, select, neutral{} other{the}}" #messageFormat interpolation
diff --git a/config/locales/zh.yml b/config/locales/zh.yml
index 62c8ed174..346d51fe2 100644
--- a/config/locales/zh.yml
+++ b/config/locales/zh.yml
@@ -1,4 +1,4 @@
-zh-CN:
+zh:
   #subscription plan duration
   duration:
     year: