What the teacher did was wrong and violated the rules. You can also sue him. But as a student, why should the teacher treat you like this? Have you ever reflected on yourself? If it is good for you for the teacher to do this occasionally, you should be prepared to correct your mistakes first. Then, I personally exchanged views with the teacher, corrected my shortcomings, and pointed out that the teacher should not use force. Let him know that it is wrong to do so. If you fail to keep up with your intelligence because of your own efforts, you will be beaten. Make it clear to the teacher Don't let it happen again.