Ask your teacher about the century of humiliation, opium wars, and whether he thinks Chinese people would be better off under British, Japanese, or self rule.

Ask him whether he's aware that Han settlement in Xinjiang goes back millennia. Ask him if he's aware that the Hong Kong riots were triggered by a relatively mundane legal question over the lack of an extradition treaty after some psycho butchered his girlfriend in Taiwan and fucked off to HK, and ask him whether it's okay for anyone to get away with a crime like that.

Ask him if he's aware of the definition of chauvinism, or the necessity of national self-determination. So many fuckin questions idk where to begin.