Kelly here from the iTunes Store. I understand you're concerned about the way Chinese characters are being displayed in iTunes. I can certainly appreciate how eager you must be to have this resolved so that your concerns will be addressed. I would be more than happy to point you in the right direction today.
These articles may help to resolve the issue:
iTunes 9: Font text is incoherent or appears in a different language http://support.apple.com/kb/TS3042
iPhone and iPod touch: How to change the language when it's set to one you don't understand http://support.apple.com/kb/HT2371
I found these articles for you on the iTunes support website at: http://www.apple.com/support/itunes/ww
At that website you will find a wide variety of helpful tutorials, troubleshooting tips, and support information.