Yeah it doesn t work because we only provide the windows fonts, btw bootcamp ftw

. I don t have a mac so I can't provide you anything except this :
http://www.wowinterface.com/downloads/info13495-MalsumisFontChanger.html it s a small program that let you change the fonts of the game.
So basically you just have to find a mac font on the net that includes chinese characters(the files are usualy quiet big 20mb at least). replace the current one with the newly found one with this program and that should solve your issue.
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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