diff --git a/app/views/layouts/application_public_visualization_layout.html.erb b/app/views/layouts/application_public_visualization_layout.html.erb
index 826312b..086ab5a 100644
--- a/app/views/layouts/application_public_visualization_layout.html.erb
+++ b/app/views/layouts/application_public_visualization_layout.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>
@@ -10,26 +10,9 @@
     <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
 
     <meta property="og:title" content="<%= yield :title %>" />
-    <meta property="og:site_name" content="CARTO" />
     <meta property="og:description" content="<%= yield :description %>" />
     <meta property="og:type" content="article" />
     <meta property="og:url" content="<%= request.original_url %>" />
-    <meta property="og:image" content="<%= yield :facebook_card %>">
-    <% if Cartodb.config[:facebook].present? && Cartodb.config[:facebook]['app_id'].present? %>
-      <meta property="fb:app_id" content="<%= Cartodb.config[:facebook]['app_id'] %>" />
-    <% end %>
-    <% if Cartodb.config[:facebook].present? && Cartodb.config[:facebook]['admins'].present? %>
-      <meta property="fb:admins" content="<%= Cartodb.config[:facebook]['admins'] %>" />
-    <% end %>
-    <meta property="article:publisher" content="https://www.facebook.com/cartodb" />
-    <meta name="twitter:card" content="summary_large_image">
-    <meta name="twitter:site" content="@CARTO">
-    <% unless @twitter_username.nil? %>
-      <meta name="twitter:creator" "@#{@twitter_username}">
-    <% end %>
-    <meta name="twitter:title" content="<%= yield :title %>">
-    <meta name="twitter:description" content="<%= yield :description %>">
-    <meta name="twitter:image" content="<%= yield :twitter_card %>">
 
     <%= yield :css %>
     <%= insert_google_tag_manager('embeds') %>
