The contract says: "no other salaried work in China".

The visa says: "employed by this or that college, university, school..."

Professionalism says: "staying up until 3 am serving drinks, playing music and providing girls for your clientelle does not make you a very efficient teacher at 8 am"

Those are the problems with that arrangement.

Contract also says: "apartment provided for teacher", not for his 8 noisy student lodgers, at least not in the building where other teachers live.

Also, it is quite obvious that a 24-30 y.o. teacher f**g some students cannot be equally objective to them and to students he does not f**k.

Neither is such a teacher, often with just a 3 year community college in the US or Australia, qualified to teach at a university anywhere in the world.

Clearer now?

Or do you still have a problem grasping it?