Japanese textbooks are only used at the beginning of learning to write Arabic numerals, and the rest of the time are pinyin books, field books, grid books, math books and so on. , senior one is not used much. Japanese book, also known as "Japanese book" and "Japanese word book", is a kind of writing exercise book for students, which is mainly used for primary school students to write Arabic numerals. The main feature is that the writing area is in the shape of "day", which is convenient for practicing the standardized writing of numbers. 10 has 8 lines, and 12 has 10 lines.