As has been mentioned repeatedly WRT working for the Chinese:
The contract is not worth the paper it's written on, they can and will change it without notice to suit their requirements.
Generally speaking the local pilots do not like you, you are seen to be taking their jobs.
If the choking pollution doesn't kill you, the smoking in the cockpit will.
I worked for a Hainan company, never again.
Of course, you will get the usual desperadoes, Inc contract company stooges that will refute this but just do your own research