diff --git a/src/adminSystem.html b/src/adminSystem.html
index b00f6cf..56fb5e8 100644
--- a/src/adminSystem.html
+++ b/src/adminSystem.html
@@ -19,15 +19,8 @@
                                 <div class="row">
                                     <div class="input-field col s12 l6">
                                         <select id="system_language" class="system-settings value">
+                                            <option value="cn">简体中文</option>
                                             <option value="en">English</option>
-                                            <option value="de">Deutsch</option>
-                                            <option value="ru">русский</option>
-                                            <option value="pt">Portugues</option>
-                                            <option value="nl">Nederlands</option>
-                                            <option value="fr">français</option>
-                                            <option value="it">Italiano</option>
-                                            <option value="es">Espanol</option>
-                                            <option value="pl">Polski</option>
                                         </select>
                                         <label class="translate" for="system_language">System language:</label>
                                     </div>