First, the economy in the Central Plains is more advanced than that in the surrounding areas, especially in ethnic minority areas. The economic base determines the superstructure, and the political system and culture of the Central Plains are also more advanced than those in ethnic minority areas. When people go up, they learn. Second, the Han people have their own living habits. The Sino-French system is not only an advanced ruling system, but also a refinement of people's way of life. Due to the development and choice of society and history, it is the most suitable system for this country. Otherwise, there will be chaos, retrogression and even disintegration in all aspects of the Han area, and finally the regime will be overthrown.

2. Military strength is only one aspect, and culture is what we call "soft power" today. The Han nationality has a long history and profound thoughts. In contrast, the accumulation of these nomadic people is too small. Mankind is destined to move from barbarism to civilization, so although it conquered Song militarily, it was actually conquered by Song ideologically.