According to the regulations of the Ministry of Education, any off-campus educational institution may not deduct or overcharge parents' tuition fees in any name, and parents have the right to choose whether to attend or not. Each contract is different because of different institutions, but the fee can be refunded.
If you don't return it, you can take the public security law or the life hotline, and ask this question at the front desk when you go to campus on weekends.