1. A 32 year old (!) developer I was working with one-on-one from QQ had a heart attack two weeks before, but was pressured (while in hospital) to come back to work as soon as possible. 2. At the QQ office, I watched an entire group (50+ developers) have a nap heads down at their desk after lunch.
If any developers from China are listening in. Leave your company, take your colleagues and start one with better conditions. You are some of best engineers I've worked with and deserve better.