legal ground
Article 37 of the Teacher Law of People's Republic of China (PRC).
Teachers in any of the following circumstances shall be given administrative sanctions or dismissed by their schools, other educational institutions or educational administrative departments.
(a) deliberately not to complete the task of education and teaching, resulting in losses to education and teaching;
(two) corporal punishment of students, the education is invalid;
(three) bad conduct, insulting students, bad influence.
If a teacher falls under any of the circumstances listed in Items (2) and (3) of the preceding paragraph and the circumstances are serious enough to constitute a crime, he shall be investigated for criminal responsibility according to law.