It is 5 meters wide and 2.5 meters high. According to the information about the size of the library gate, according to the average flow of people in the library, the gate is 2.5 meters high and 5 meters wide. Library is an institution that collects, sorts out and collects books and materials for people to read and refer to, and has the functions of preserving human cultural heritage, developing information resources and participating in social education.