The hardcover and paperback versions were the two most common versions of books. The main difference was the design of the cover and the layout of the pages. 1. The paperback edition has no decoration on the cover of the book. The page layout is relatively simple. There are usually 250-300 pages per page. The price of the paperback version of the book was relatively low and suitable for the general public to buy. 2. Hardcover: The cover of a hardcover book is decorated with exquisite decorations, usually including the cover cover, the book waist, and the side of the book. The page layout was also more complicated. There were usually 250-300 pages per page. The price of the hardcover books was relatively high, suitable for professionals and readers to buy. In addition to the difference in cover design and page layout, the paperback and hardcover versions also differed in terms of printing quality and paper thickness. Generally speaking, the quality of the hardcover print was better, and the paper was thicker and more suitable for preservation and collection. On the other hand, the paperback version had a lower printing quality, and the paper was thinner, suitable for reading and preservation.