Did he find another teacher to replace him? If he asks his department and academic affairs office to substitute for him, and the department and academic affairs office agree, it doesn't count.

If no one comes, damn it, this is a first-class teaching accident, marked A2, that is, "the teaching content stipulated in the teaching plan has not been completed by one third or more than one quarter."

You can directly report to the academic affairs department of the school, ask for compensation, and you must pay compensation.

If the school doesn't compensate, there are relevant provisions in the Education Law and the Teachers Law. You can report to the higher education administrative department of the school.