What are the characteristics of Mongolian teaching materials in Song Dynasty?

Looking at the compilation of Mongolian textbooks in Song Dynasty, two points need to be pointed out: First, although Mongolian textbooks are simple and popular, they are mostly written by famous scholars and grandmasters in Song Dynasty, such as Sima Guang, Zhu, Zhen, etc. They are all grandmasters or respected as prime ministers, and they do not despise themselves because of their shallowness. This reflects the fine tradition of ancient education in China. Second, most of the textbooks of Mongolian studies in the Song Dynasty were works of the Southern Song Dynasty, which also reflected the prosperity and popularization of cultural and educational undertakings in the Southern Song Dynasty.