The word "six books" has been circulated as early as the Spring and Autumn Period and the Warring States Period. The earliest ancient book that mentioned "Six Books" was "History of Guan Bao in Li Zhou": "Bao (an education official in Zhou Dynasty) remonstrated against Wang's evil, and cultivated the country's sons (children of nobles) with Tao as the teaching method of six arts: one said five rites, two said six music, three said five shots, four said five systems, five said six books, and six said nine numbers. Six Books In the Han Dynasty, three great scholars understood the name of "Six Books". The first is Ban Gu, who pointed out in History of Han, Art and Literature: "The ancients entered primary school at the age of eight. Therefore, the Zhou family raised rural children and taught six books, called pictographs, images, images, sounds, notes, arguments and words. "The second is Joe Cheng. According to Zheng Xuan's Notes on Zhou Li, he thinks:" Six books are pictographic, cognitive, annotation, doing things, borrowing and harmony. " The third is Xu Shen, who not only pointed out the name of "Six Books" in Shuo Wen Jie Zi Preface, but also defined them respectively: "Li Zhou entered primary school at the age of eight, and Bao taught the country, first with six books. When I say, pointing to things, pointing to things, seeing and knowing, seeing and seeing, is also up and down. Second, pictographs, pictographs, are painted things, and the sun and the moon are also. Third, the sound of sound, the sound of sound, in the name of things, for example, complement each other, rivers also. Four words, know, know, and friendship, see what it means? So is Wu Xin. Fifth, turn notes, turn notes, build classes, agree to accept each other and take exams from time to time. Sixth, borrow, borrow, there is no word in it, relying on the voice to seek things, the commander also. "