China is a mess to say the least
Be very careful, very careful. If you go, only do so with an honest, well funded, straight shooting agencey that will give you referrences of expats already there. Preferrably on line now.......not going through certification. That can take 9 months in many cases. You must call them and get the truth. If it involves Fortune Pacific or TopFlight....FORGET IT. Been there done that. Many have as well and all are gone.
P.S. Do you speak Chinese? You are going to need to, because the Chinese definition of ICAO standards does not respect English as a primary language in the cockpit.
Sad but true.
Good luck, be safe.