Most of Chinese Schools offer foreigners 1 year contract. why did you leave nore more than 1 year ? did you do something illegal? and did you break the contract rules? we all normal readers on the internet think so. i read some people saied "you are a joke" and "the joke is on you."
more question,you mentioned "After arrival they force you to sign new contract ( not the same as you got while being at
home) + appendix. " they changed the contract ,why did you sign the new contract but you are not satisfied.

Almost all schools in china offer realse letter for foreigners.why did not the school give you the release letter. did you break Chinese Lows or the contract?