Now it's here http://www.battlenet.com.cn/wow/zh/ you type your name in the white field and you are in. Sadly now it's all in chinese.
When you log on a realm type "/join english
" to get in touch with the community members.
WoW English/Chinese glossary
(2000+ translated words) found on wow-in-chinese.jfs-web.chEnglish speakers are consolidating on the same realm for Cataclysm check this thread