Housing is usually free, so that's a big bonus. I doubt you'll have a car to pay for. What does that leave you with? Food, clothes, booze, bargirls, booze for bargirls, massage parlors, bargirls in massage parlors, scams, staying in four star hotels when you go out of town on holiday. But mostly scams involving booze for bargirls in massage parlors.
Have you ever been to New York? Shanghai is often described being like New York, but with about a dozen more Chinese people.