diff --git a/app/views/layouts/public_dashboard.html.erb b/app/views/layouts/public_dashboard.html.erb
index 446cec4..fb19445 100644
--- a/app/views/layouts/public_dashboard.html.erb
+++ b/app/views/layouts/public_dashboard.html.erb
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en">
+<html lang="zh">
   <head>
     <%= favicon_link_tag "favicons/favicon.ico" %>
     <title><%= yield :title %></title>
@@ -15,13 +15,6 @@
     <meta property="og:url" content="<%= request.original_url %>" />
     <meta property="og:image" content="<%= @avatar_url %>" />
 
-    <meta name="twitter:card" content="summary">
-    <meta name="twitter:site" content="@CARTO">
-    <meta name="twitter:creator" content="@CARTO">
-    <meta name="twitter:title" content="<%= yield :title %>">
-    <meta name="twitter:description" content="<%= yield :description %>">
-    <meta name="twitter:image" content="<%= @avatar_url %>">
-    <meta name="twitter:url" content="<%= request.original_url %>" />
 
     <% if @has_new_dashboard %>
       <%= stylesheet_link_tag 'deep_insights_new', 'common_new', 'public_dashboard_new' %>
