Tell me what do you think of the situation in which related households go through the back door in the postgraduate entrance examination and retest?

There may be some shady situations when there are relatively strong related households and it is difficult for schools to strive for enrollment expansion, otherwise teachers would rather strive for enrollment expansion (generally, it is no problem to ask the Ministry of Education for 2-3 places). After all, this formal channel will not bring criticism, and in other cases, teachers are not willing to sacrifice fairness and criticism to do it.