Legal analysis: There is no explicit emphasis on the upper limit of liquidated damages for overdue payment, and both parties have an agreement on liquidated damages for overdue payment: according to the principle of autonomy of contract will, both parties have agreed on the calculation method of liquidated damages in the contract, which should generally be followed if it does not violate the legal provisions. If the parties have no agreement on the liquidated damages for overdue payment and do not advocate it, they will not support it; If the parties claim compensation, the liquidated damages shall be calculated according to the bank's interest rate for similar loans in the same period.

Legal basis: Article 585 of the Civil Code of People's Republic of China (PRC), the parties may agree that one party shall pay a certain amount of liquidated damages to the other party according to the breach of contract, or agree on the calculation method of the amount of damages for breach of contract. If the agreed liquidated damages are lower than the losses caused, the people's court or arbitration institution may increase the liquidated damages at the request of the parties; If the agreed liquidated damages are excessively higher than the losses caused, the people's court or arbitration institution may appropriately reduce them at the request of the parties. If the parties concerned pay liquidated damages for delayed performance, the breaching party shall also perform the debt after paying the liquidated damages.