The Mongolian textbooks of the Song Dynasty were widely circulated in later generations, and the most influential one was the "Three Character Classic" which is said to have been compiled by Wang Yinglin. "The Three Character Classic" is an elementary school book that educates natural history knowledge. It adopts the method of three-character rhyme and covers ancient history, allusions, famous sayings, characters and other aspects of knowledge. The rise and fall of the above-mentioned dynasties, down to the historical facts of the Song Dynasty, and later by the Ming Dynasty People in the Qing Dynasty supplemented the parts since the Liao and Jin Dynasties.