Site navigation for themes

Hello, I am having a very weird issue trying to navigate/browse the themes section here:
http://ww.wp.xz.cn/extend/themes/

Lets say for example i want to download the Constructor theme here: http://ww.wp.xz.cn/extend/themes/constructor
When ever i click on it, i get redirected back to: http://ww.wp.xz.cn/extend/themes/
and so on with every link that contains the “themes” directory.

So better said, every link that contains the “themes” directory/folder on ww.wp.xz.cn redirects me to just: http://ww.wp.xz.cn/extend/themes/

I have no idea what could be causing this and ive tried several different browsers.