Legal basis: Instructions for the Use of Changchun Library Reservation System 1. Please swipe your card at the main entrance of the library according to the appointment time; 2. Readers who want to stay in the library at the end of the reservation time can make a second reservation and swipe their cards at the main entrance on the premise that there are vacant seats in the reservation system; 3. If you need to apply for a reader's card, please go to our 24-hour self-service library; 4. The booking system is open from 7: 00 to 22: 30 every day.