1. In terms of educational purposes, he established the goal of cultivating talents with different levels and specifications, such as "benevolent", "gentleman" and "scholar", and then put forward the idea of "learning to be an official" (Chapter 19 of Subchapter), which is of great significance to breaking the aristocratic hereditary system.

2. On the role of education: Confucius put forward the idea of "ruling the country by virtue" and "enriching the people by education", fully affirmed the great influence of education on social, political and economic development, and regarded education as one of the important factors of "governing the country safely".

3. Regarding the object of education, he not only put forward the slogan of "no class in education", but also put forward the generous enrollment conditions of "cultivate one's morality, I will do it without teaching".

4. In the teaching content: Confucius attached great importance to moral education, putting moral education at the top of the whole education, and advocated "taking Tao as the purpose, virtue as the basis, benevolence as the skill, art as the tour" and "learning literature if you have spare capacity".

5. In terms of how teachers teach, he first put forward the teaching attitude of "never tire of learning and never tire of teaching". On the one hand, teachers are required to constantly strive for self-improvement and improve their knowledge level; On the other hand, teachers are required to be highly responsible and selfless to students.