Twenty copies. Dalian Jiaotong University Library was established in 2000 to meet the information needs of readers in the new era, and was completed and put into use in August 2002. With a total construction area of nearly 22,700 square meters, the building is equipped with reading area, self-study area, office area and conference area, which is the information and academic exchange center of the school. The library stipulates that graduate students can borrow 20 books and return them within 60 days. The library adopts the service mode of collecting, borrowing, reading and managing books in one place.