Is there a transcript that goes along with this question?
Answer: Anger issues
Explanation:
The words knife and chopping are surely not something that is using when it comes to teaching and class. It is against the school law and it is very dangerous and punished harshly. Mr. Chan is fighting anger issues because he is hurting himself because of the irritation that he gets from the kids. He can't control it and that is why he is doing something like this.
You shouldn't use unprofessional laguage