Open the door. Hainan Provincial Library is open on May Day, from Saturday to Thursday from 9: 00 to 20: 30, and Friday is a special day, with the opening time from 9: 00 to12: 00. Hainan Provincial Library has social science library area, literature library area, natural science library area, children's library and 24-hour self-service library books and periodicals in the middle hall on the second floor of the main building. On the first floor, there is a machine that scans the code for library card for free.