I don't think there's any place we can find Chinese city safety rating. I created a web page for you all to start this small project:
http://rootshell.be/~yong321/misc/poll1.php
It should help those that plan to travel or live in China. Thanks for visiting and providing suggestions.
There're some other China related pages. See the section "Chinese Culture and Life" at
http://yong321.freeshell.org/misc.html
Yong Huang