Many young Americans who come to China to teach are giving their country and the rest of us FT's a bad name. As a result of their uncontrolled lifestyle, many Chinese employers now include clauses in their contracts ,like "don't overdrink and teach, or else you will be fired".
Too much personal freedom in a country can be a bad thing, so I welcome the curfews that most Chinese schools impose on foreigners. We are not all night clubbers and bar flies. If you are that kind of person, you'd be better to give China a miss for the purposes of teaching, otherwise you'll get yourself in hot water!