How to fine the National Library for overdue borrowing books?

Borrowed books and CDs must be returned on schedule, and overdue use fees must be paid for overdue return:

Chinese books 0.30 yuan/book/day;

CD 0.30 yuan/book/day;

Foreign language books are 0.50 yuan/volume/day.

The method of online renewal of the National Library;

1. Log on to the website of the National Library.

2. Find "Reader Portal Login Registration" on the right side of the page, and click. ?

3. After entering the account password, find "My Digital Library" in the navigation bar and click.

4. Find "Borrowing Information" in the column of personal information on the left side of the page, and click.

5. Continue to click on the number behind the "Borrowing" column to view the information of the currently borrowed books.

6. Click on the serial number before the title of the book to view the specific borrowing information.

7. Click "Update" to update the loan.

8. After the renewal is successful, the expiration date will also be updated. ?