The borrowing service of the National Library is free, and readers can borrow books by handling reader cards. Readers should bring valid identity documents to the library to apply for a reader's card, which can be handled free of charge. After completion, readers can borrow books within the specified borrowing period according to the regulations of the library and return them before the expiration. This kind of lending service is to facilitate readers to acquire knowledge and information resources and promote the development of reading and learning. In a large library like the National Library, readers can borrow all kinds of books and documents, and read and borrow them for free.