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 (usually expressed in written records). In other words, the library is the memory device and diffusion device of social knowledge, information and culture.

The earliest library-According to the excavation results of archaeologists, we know that the earliest library in the world is Nineveh Library in Mesopotamia (Ashubeniba, king of Assyria, established it, so it is also called Ashubeniba Library). This is the most complete, largest and complete ancient civilization site library excavated today.

It was more than 400 years earlier than the famous Alexandria Library (the largest library in ancient times) in Egypt, and because of the particularity of mud-printed books, it was not destroyed by the war like Alexandria Library, and most of them were preserved. Shenzhen has become a "city of thousands of pavilions".

Shenzhen virtual reader card provides great convenience for readers to use public libraries by means of deposit-free, ID-free and online application. The comprehensive application of virtual reader card enables readers to use online resources of the library smoothly and enjoy offline services conveniently, and also strongly supports the service innovation of the library.