How much control an FAO has over an FT can vary from place to place。 At some universities there is no control，at other places there is more。I am not trying to defend Chinese employers，if an FT is married to a Chinese woman or has a Chinese GF then that is none of their business，except maybe if the FT is sleeping with their own students。

The Chinese are nosy people however， they will be that way whether you live on campus or off campus。Gotta feel sorry for them in a way，they lead such dull and uninteresting lives they feel the need to spy on what some foreigners do.