diff --git a/docs/index.html b/docs/index.html
index ad2844f..9995147 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -1,12 +1,22 @@
 <!DOCTYPE html>
-<html>
+<html lang="zh-CN">
 <head>
 	<meta charset="utf-8">
 	<meta name="viewport" content="width=device-width, initial-scale=1">
 	<title>chsrc &#20840;&#24179;&#21488;&#36890;&#29992;&#25442;&#28304;&#24037;&#20855;&#19982;&#26694;&#26550; | Change Source everywhere for every software</title>
 	<meta name="keywords" content="chsrc,&#25442;&#28304;,linux,windows,macOS,npm,pip,yarn,brew,ubuntu,debian,cpan,fedora,gem,composer,cargo,maven,bsd" />
+  <meta name="baidu-site-verification" content="codeva-qdl1hIGxvW" />
 	<link rel="stylesheet" type="text/css" href="index_html.css?h=19caec86">
 </head>
+<!-- Google tag (gtag.js) -->
+<script async src="https://www.googletagmanager.com/gtag/js?id=G-1X58LT2YZM"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', 'G-1X58LT2YZM');
+</script>
 <body>
 <div class="textstyle1">
 <div id="container_3e575098"><div id="container_3e575098_padding" ></div></div><span class="textstyle2"><br/></span><div id="container_1f421e47"><div id="container_1f421e47_padding" ><div class="textstyle3"><span class="textstyle4"><br/><br/></span></div>
