1, the class attribute ruling policy of Cao Cao and Liu Bei (Han nationality) corresponds to the Confucian class and ruling policy represented by Yuan Shao, Sun Quan and Sima Yi.

2, the development of metaphysics, talking about the wrong country.

3. Analysis of ethnic contradictions between different ethnic groups and Han nationality.

3. North-South military confrontation under the strength of both sides (who can unify China).

4, the advantages and disadvantages of the localization of Emperor Xiaowen in the Northern Wei Dynasty, and the resulting impression.

5. The class attribute of soldiers in six towns, as well as the analysis of reasons and influences.

6. The class attribute of the regime in the Southern Dynasties, and the conflict of interests between the gentry from the south to the north and the indigenous people in the south.

7. Analysis of the causes and influence of the Northern Zhou Dynasty's military system and the class interests it represents.

8. Social differences and cultural exchanges between North and South.