Are you inquiring as how to store the Chinese content or how to display it??
I've not done it with mysql, but using postgres works fine for me!
Anyway, for displaying the Chinese characters correctly, all you need is to set the appropiate character set in the meta tag, eg:
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
OR
<meta http-equiv="Content-Type" content="text/html; charset=big5">
Hope this help a little bit... 🙂