What fonts and numbers are commonly used in book printing?

The font used for typesetting the text of general books should be no less than No.5; Popular books and children's books for the workers and peasants should be printed in small four-character or larger font as far as possible.

In books, small five-character and long five-character imitation of Song Dynasty are only used for quotations, descriptions, catalogues, charts and so on. , but for dictionaries, dictionaries, manuals, data indexes, bibliographies, charts and other reference books. Small five-character or long five-character imitation of Song Dynasty can be used to print text.

Generally speaking, the word "six" is not used in books, but it can be used appropriately in notes, explanations, charts and so on. Books and some reference books.

Extended data

When designing a general book, it is related to the size of a large piece of paper: 31x 43 (78.74 cm x109.22 cm).

This paper is folded in half to become two (four pages) at a time, which is called folio; When folded in half again, it is folded into four parts (eight pages), which is called quarto; When folded in half again, it is folded into eight (sixteen pages), which is called octave; When folded in half again, it becomes sixteen (thirty-two pages), which is called sixteen; And so on. This is the historical origin of book size.

References:

Baidu Encyclopedia-Book Font Rules

References:

Baidu encyclopedia-book size