There are no less than 25 books per capita. Primary school libraries should have no less than 25 books per capita. The amount of books in the library shall not be lower than the standard of the Regulations on the Collection of Books in Libraries (Rooms) of Primary and Secondary Schools. Establish and improve the system of adding new and eliminating old. The library should add (update) at least one paper book every year. The number of books should be reasonably determined according to the actual needs.