They pay 12 months a year, 7k.

Must be a rubbish TC. BTW, 21k in shanghai is difficult to achieve, free accommodation thrown in too? No way Jose! 21K? = WORK LIKE A DOG AT A TC. U MUST BE A GW! SHAME ON U.
I see you've toned down your anti Yuncheng stuff. Plausible explanation re: Police took passport - to stop FT SKIPPING AWAY, AFTER HE HAD SETTLED OUT OF COURT FOR DAMAGES DUE FOR ABUSING A LOCAL CHINESE, AND HE HADN'T THE MONEY TO PAY IN A ONER. BETTER THAN BEING DEPORTED, EH?
Visa run to HK WITH FALSE DEGREE, UTTER CRAP. INVITATION LETTER AFTER IT WAS OBTAINED IN THE PROVINCE BY THE EMPLOYER WITH FALSE CREDENTIALS.
tHAT'S WHY we shoukdn't believe you!
And Xi'an is badly polluted, not Yuncheng, btw! sLOW TRAIN FROM yUNCHENG TO THERE, ABOUT 2 HRS, NO NEED TO WASTE MONEY ON A BULLET TRAIN!
U R A JOKE, PAL!