7: 00-23: 00, etc. Shenzhen Library is a national first-class library. The library has a large number of paper documents and electronic documents for readers to consult. The opening hours of the main building from Tuesday to Sunday are: 9: 00-2 1: 00 on the first to fourth floors, 9: 00- 17: 00 on the fifth to sixth floors, and the children's service area is: Tuesday to Friday 12.