Legal analysis: the calculation method of liquidated damages (that is, the calculation method of overdue loan interest): 30%-50% will be added on the basis of the loan interest rate agreed in the loan contract, but it shall not exceed 4 times of the loan interest rate of the People's Bank of China. If the loan interest rate is not agreed, an additional 30%-50% will be charged on the basis of the loan interest rate announced by the People's Bank of China for the same period. (According to the notice of the People's Bank of China on the relevant issues of RMB loan interest rate).

Legal basis: Civil Code of People's Republic of China (PRC).

Article 577? If one party fails to perform the contractual obligations or fails to meet the contractual obligations, it shall be liable for breach of contract, such as continuing to perform, taking remedial measures or compensating for losses.

Article 578? If one of the parties expressly expresses or shows by his own behavior that he will not perform the contractual obligations, the other party may require him to bear the liability for breach of contract before the expiration of the performance period.

Article 579? If one party fails to pay the price, remuneration, rent and interest, or fails to perform other monetary debts, the other party may demand payment.

Article 584? If one party fails to perform its contractual obligations or fails to perform its contractual obligations in conformity with the agreement, thus causing losses to the other party, the amount of damages shall be equivalent to the losses caused by the breach of contract, including the benefits that can be obtained after the performance of the contract; However, it shall not exceed the losses that the breaching party foresaw or should have foreseen when concluding the contract.