You need to verify it before you can continue to the next step. 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. When you go to the library, you need to verify the verification code before you can proceed to the next operation. Verification code is a security measure provided by the website for users, which is used to enhance the security when users log in.