Are you seriously trying to suggest that Chinese firms don't have their own racial taboos? Or gender issues? That directly contradicts every experience I've had or report I've heard. Aren't their crimes self-policing too?
All I know is that China has a huge, ambitious, STEM-focused workforce and a smaller economy. They could discriminate against applicants on any arbitrary basis ( I have no idea if they do, but that's irrelevant) and still continue to hire lots of intelligent, highly-qualified, and hard-working employees.