I have just browsed the TOS and nowhere in it does it say that you only have to use English.
I may be wrong.
But if i am right, then may i suggest that you place a page on your site, where people are given the choose wheather they want to view your website in Chinese or English.
I would also advise that you place a warning on the site saying that you should have the Chinese language pack is installed, if people here in england want to view your site in Chinese, as not all computers have the Chines pack installed!
Regards,
Randomize
EDIT TO THIS POST:
SINCE POSTING THIS THEREAD I NOTICED A THREAD IN THE SUSPENSION PAGES, WHERE THIS GUY GOT BANNED FOR USING DUTCH ON HIS WEBSITE.
THE ONLY SUPPORTED WEBSITE LANGUAGES, ARE FRENCH, SPANISH AND ENGLISH. THERFORE I AM WRONG. SORRY FOR THE INCONVINEINCE!