C268 Dust and Dust Were Flying Everywhere

There are a lot of places in the library that are intelligent, machine-operated, and there are very few places for manual labor. From selecting books, reading books, borrowing books, registering and returning books, all of these can be done by the student himself, a student card can take care of everything. What Dongfang Qingyu needed to do was to open the door on time, close the door