West air
Kunming looks like nice city in relation to other Chinese ones. At least because of high elevation the air is better. I am with west air now because they offer 15/15 roster. In these 15 days they can fly you up to about 88 hours legally. In reality it is about 75. In any airline that you look into the schedule and destinations for foreign pilots is almost the same. West air is low cost airlines so expect 4 leg day pretty often with flight time about 5.30 to 07.00.
Cheers