After years in this area I can tell you that the worst airline in China is Sichuan Airline. Although airplanes are quite good and most of the people working in are nice, the pay that use to be the last, after years not increasing became far even from the penultimate and the schedule that use to be 3 on 2 off became first 4 on 2 off and lately 5 on 36h off, with only overlay flights, sleeping home maybe 6/7 nights a month. Everybody is running out....I already did
Just make other choices if you wish to join China