I work for a Chinese company and go to China , Shanghi and Shenzhen quite a bit and as far as I know and some of the local guys I speak to motorsport is very very thin on the ground. These are the only venues I think in China for car and bikes
Beijing International Street Circuit
Chengdu Goldenport Circuit
Goldenport Park Circuit
Guangdong International Circuit
Guia Circuit
Ordos International Circuit
Shanghai International Circuit
Shanghai Tianma Circuit
Zhuhai International Circuit
As far a drifting goes I think if you are into drifting China come a close second to North Korea and Switzerland for drifting, having said that I think Red Bull did a bit out there and the yanks came over too !
Good luck