I couldn't reply earlier duw to some "technical difficulties" i had and i couldn't connect to the forum.
go to this post:http://wow-in-chinese.forum2jeux.com/Technical-problems-FAQ-f2/READ-WRITE-in-Chinese-Simplified-and-Traditional-in-game-t81.htm
the ifrst part is for the fonts.
but as you can already SEE all other player names and what they write, THAT part you already have done.
yet the SECOND part of it, the one about WRITING in chinese, you have not completed yet.
I posted screenshots and everything in the post. if its still not clear, don't hesitate to PM or email me.
its really a 3 minute procedure.
PS: until you fixed it, i recommend you set a /DND <message here> in-game, and in the message aprt you let people know in pinyin or english that you can't whisper them.
Come and join on Starcraft 2 as well =]