=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Date: Fri, 03 Dec 2021 04:17:18 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
Set-Cookie: acw_tc=2760821f16385050381764139e210c1a793b9f5623b1a7023913facf3cedaf;path=/;HttpOnly;Max-Age=1800
Server: nginx
Vary: Accept-Encoding
Set-Cookie: PHPSESSID=2cdt6ogbatiecskma5d7rmheem; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Content-Security-Policy: : default-src 'self';
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
X-Content-Type-Options: nosniff

Request headers
================
HEAD / HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: en.beijing2008.cn
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.