The hiring process is the same at all Chinese airlines. You are taking a Chinese ATP exam. Written, sim, and medical. The medical is insane, and I mean that, literally. It makes little sense. The ATP written is difficult, but passable. Still, the majority don't pass. The sim eval is a workout. If you can hand fly a complicated NDB approach, raw data, single engine, with probably at least one other emergency, you will do OK. If you are an automation cripple you will not pass. Period.

I don't have any knowledge of the working conditions at CS. They are known as "China Slowly" by the rest of the airlines in China as they fly slow.