A book is a medium for recording information in the form of words or images, and usually consists of many pages (made of papyrus, parchment, kraft paper or paper) bound together and protected by a cover. The technical term for this physical arrangement is codices.

In the history of hand-held physical support used to expand written works or records, manuscripts replaced their predecessor scrolls. A page in the code is a leaf, and each side of the leaf is a page.

Origin:

The word "book" first appeared in Shi Ji Xiao Shijia. When Liu Bang attacked Xianyang, "He Du first received the imperial edict of the Prime Minister of Qin. Pei Gong is Hanwang. What is the Prime Minister? Hanwang therefore knows Essex in the world, the number of registered permanent residence, the strength and weakness, the sufferings of the people, and how to get Qin Shu. "

The "book" here refers to maps and documents, which is different from the books we are talking about at present. Further exploration of the origin of the word "book" can be traced back to the allusion of "the river draws a picture and Luo draws a book" recorded in the Book of Changes, which reflects the close relationship between the picture and the word.