The monthly salary is 5000 yuan. The supernumerary staff of Yangzhou Library has a monthly salary of 5,000 yuan, an annual salary, five insurances and one gold, and a generous salary. 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.