54814571 copies. Confucius Second-hand Book Network is the largest Chinese second-hand book website in the world, which brings together 7, online bookstores all over the country and displays as many as 54,814,571 kinds of books. The characteristics of Confucius' old book network are: "rare books are gathered", "books are all cheap" and "irreplaceable" The so-called "collection of rare books" refers to a large number of ancient rare books with great collection value.