I think GFW cause this ,we blocked to edit some pages.
I'm teriible sorry,my English is not good.But I want to say we can't edit some page like 6/24 , Liuxiaobo , Hujintao.With the develop of wikipeida,the about police page become more ,now in zh wikipeida those pages' editors are most in HongKang.The contenet of China,can't do any good for those pages. So I think we should set some vpn server and https servers.
HTTPS server is provided but blocked by mainland China. However, set some vpn cannot fix the problem. Just my few feelings.