1. For the overpaid, overpaid or wrongly paid fees, the people at that time did not ask for a refund until three years after the payment date; (Reason: not actively claiming one's rights, delaying for too long)
2, the parties can not provide evidence of wrong payment; (Reason: lack of proof of payment)
3. The parties request to refund the fees paid in accordance with the regulations before the approval of the fee reduction request. (reason: estoppel is prohibited)