Legal analysis: if the prepayment is less than one year, the interest will be charged for not less than three months, and if the prepayment is over one year, the interest will be charged for not less than one month.

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

Article 577 Where a party fails to perform its contractual obligations or fails to perform its contractual obligations in conformity with the contract, it shall be liable for breach of contract such as continuing to perform, taking remedial measures or compensating for losses.

Article 578 Where a party expressly expresses or shows by his own behavior that he will not perform his contractual obligations, the other party may require him to bear the liability for breach of contract before the time limit for performance expires.

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

Article 584 Where a party fails to perform its contractual obligations or fails to perform its contractual obligations in conformity with the contract, thus causing losses to the other party, the amount of damages shall be equivalent to the losses caused by the breach of the 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.