Why most well-informed FT's won't apply for jobs there - part-time work; probably a lot of unsociable hours in order to suit clients' needs; hours will most likely mean clock hours, not teaching periods (as the Chinese say, teaching hours); no guarantee of how many hours you can get.
Typical TC contract - the carrot is the 200 Yuan an hour. but there are many imponderables. Personally, I wouldn't risk it to get the biscuit!