Never had a verbal/physical with a Chinese copper in 13 years. Got chatty with the SWAT guys who hung around the underground station near my house, after a few pints.
They mind their own. They'll also be without sidearms here, so I guess they're really just "Foreign Police".
Had a friend beat the living crap out of four of them back in China, Xiamen, when they got in his face on a quiet street (back in 2005). He was offered jail time or deportation. He left the country.
Foreigners will look ignore them. Chinese will do the same.
*That said, I never had a negative interaction with a Chinese copper in 13 years, nor a Taiwanese copper in 3 years (wait, did get feisty with some TWN traffic coppers one night). And I was a blustery 20-30 something. Actually got a great selfie of me getting a lift home from a copshop after a taxi driver was pulling tricks, and I told him to pull into the (Chinese police) station. The cops hauled him over the coals, and took me home. He stayed.