Li Yupei's math story is a book. According to the readers' mastery of mathematics knowledge and the level of thinking ability in primary school, the book selects the content suitable for reading in the lower, middle and upper grades of primary school from Professor Li Yupei's most popular stories, summarizes the knowledge points of mathematics in combination with typical problems and solutions in mathematics learning, and then compiles a full set of three-volume books with full-color illustrations (pinyin is also noted in the lower grades). Li Yupei's Tales of Mathematics (primary and junior high schools) is one of the volumes of Li Yupei's Tales of Mathematics.