Legal basis: Article 15 of the Measures for the Administration of Public Libraries in Shandong Province is open to the public in accordance with the following provisions: (1) The weekly opening hours of provincial public libraries are not less than 70 hours; (2) The weekly opening hours of municipal public libraries with districts are not less than 63 hours; (3) The opening hours of county (city, district) public libraries are not less than 56 hours per week. During national holidays and students' winter and summer vacations, the opening hours should be appropriately extended. The opening hours and service scope of public libraries, as well as the use methods and precautions of facilities and equipment, shall be publicized to the public. If the opening hours are changed or closed for any reason, it should be announced 3 days in advance.