If you don't return the books borrowed from the library, you will have to pay twice the book price. The reason for not returning the book may be that it is lost. In that case, you can buy a copy from the bookstore to make it up. I have another idea. Take a book about the same size, package it according to the style of the library, and write the title. Then put it in many books and return it together.

A library is an institution that collects, sorts out and collects books and materials for people to read and refer to. As early as 3000 BC, libraries appeared. Library has the functions of preserving human cultural heritage, developing information resources and participating in social education. Library is the external storage and selective transmission mechanism of social memory. In other words, the library is the memory device and diffusion device of social knowledge, information and culture.