Legal analysis: The regulations of libraries in different places may be different. If the expiration time is too long, a certain fee will be charged. According to different situations, the library will be fined if it fails to borrow after the time limit, but the amount of the fine is generally not high. If the time is too long, the late payment fee will reach dozens or even hundreds.

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.