1, Guangtu overdue books need to pay a late fee of 0. 1 yuan/day per book. For example, you borrowed five books, four of which were 30 days overdue, totaling 12 yuan. You can return the book and pay the late fee without carrying the reader's ID card. It is better to return the overdue books as soon as possible.

2. Return books at the service desk of Guangzhou Library (new library). The staff at the service desk will ask you to pay a fine exceeding the loan period (about 0. 1 yuan for more than one day). After paying the fine, the library card (ID card) can continue to borrow books.

When you say online renewal, you want to renew it within the loan period. If the loan period is exceeded, it is beyond the loan period.

If you have any other questions, such as the number and password of online renewal, you can also consult at the service desk of the new library.