I am a Chinese teacher in a cram school. Students don't attend classes, no matter how disciplined they are. What should I do if you say you are doing his own thing, no matter how it will affect your grades?

At this time, you should stop the tutorial decisively, wait for everyone to calm down, and then explain: you paid for the tutorial, and I said what you need to know. I hope you don't waste money. If you don't want to listen, then you are turning a blind eye to your parents' heart and soul. You should think about your parents. Then continue the class. Afterwards, I need to give feedback to the parents.