Undergraduate students can check out up to five books for two weeks. Graduate students can check out up to fifteen books for two months. Books can be renewed(续借)up to two times. There is a 50-cents-a-day late fee for overdue books. Periodicals(期刊)and reference books cannot be checked out. The library is open weekdays, from 8:00 a. m to 9:30 p.m., and on Saturdays from 9:00 a.m. to 8:30 p.m. The library is closed on Sundays.