Public books are not books. There is a time limit for the protection of property rights of works. After the copyright protection period, the works enter the public domain, which is the * * * resource of the society, commonly known as "public edition" books, and the public can use them for free without permission. Collection refers to items with cultural value collected by libraries, museums, etc. Brief introduction of archives, documents, cultural relics and other collections collected by official or folk museums such as archives, museums and art galleries. This shows that public books can't be counted as books.