You can't. According to the public information inquired, normal prepaid cards have a deadline, so try to use them within the deadline, and it is best to use up the money inside before the expiration. If you accidentally expire, you can consult the bookstore service desk and provide the corresponding renewal service. It depends on the relevant specific regulations in various places, which will generally give you an opportunity to avoid users from causing heavy losses due to carelessness. After renewing the fee, you need to pay attention to using it as soon as possible and use up the amount inside as soon as possible. If it expires, you may not have the opportunity to renew it.