The back cover is the last page of the book. The first page of a book is called the title page, and the last page is called the back cover, also called the fourth page and the bottom page. Books are printed with uniform book numbers and pricing at the lower right of the back cover, and periodicals are printed with copyright pages on the back cover, or used to print non-literal words and pictures such as catalogues. The back cover is also called seal four. The back cover is the bottom of the book cover, an important part of the book, and an extension, supplement, generalization or emphasis of the cover and spine.

Books:

In China, it originally refers to classics, and books include books, picture books, pictures and other publications. A book is a work that records all kinds of knowledge on certain materials with symbols such as words and pictures, clearly expresses ideas, and makes a book. They are important tools for spreading all kinds of knowledge and ideas and accumulating human culture. With the development of history, its writing style, materials used, binding forms and forms are constantly changing and changing.