Those who borrow books within 2 days are exempt from punishment and reserve the borrowing authority; If the borrowing of books is overdue for 2 days, the borrowing authority will be suspended from the third day, and the borrowing authority will be restored after the books are returned and overdue.

There are two ways to restore the borrowing authority after the deadline: deducting points or stopping borrowing. 10 points can be deducted for each overdue period, and the number of days of loan suspension = first overdue days *0.2+ other overdue days *0.5. The first overdue days are within 15 days, and other overdue days are outside 15 days.