What are the themes of the Western Zhou Dynasty enfeoffment system and the county system?

I don't know what you mean by the topic. What do you ask? I'm just saying.

In the early years of the Western Zhou Dynasty, merchants were wiped out by sneak attack, but their own strength was too weak to control the vast areas originally controlled by the Shang Dynasty. Once the forces of Yin and Shang were concentrated, it would bring great trouble to the Zhou Dynasty (the Three Prisons Rebellion). Zhou had to send his own people to build many small colonies on the ruins of Shang Dynasty, trying to prevent the combination of Yin and Shang forces. This is the background of the enfeoffment system. In the early days, the enfeoffment system was a good system, because there was only one city in each feudal country, surrounded by local aborigines, and it was often hostile to feudal countries. Sealing the country can only barely survive, but also depends on the central authorities, not to mention challenging the central authorities' delusion. At the same time, because of the existence of feudal countries, the military pressure of the Zhou Dynasty was greatly reduced, and there was no need to worry about the counterattack of the Yin and Shang forces.

By the Eastern Zhou Dynasty, the influence of Yin Shang had collapsed and the indigenous people had been assimilated. Due to the development of productive forces and the increase of population, Guo Feng has become more powerful. At the same time, the weakening of the enemy made the country start thinking about strengthening itself. Guo Feng began to build cities everywhere and integrate with each other. When he is strong enough, he can challenge the son of heaven. This is the end of the enfeoffment system.

Guo Feng has developed some methods to control the city itself, that is, the county system. Later, the county system was developed. The county system is suitable for countries with more developed productive forces and less internal and external threats. Developed productive forces allow the central government to strictly control counties, while smaller internal and external threats make local governments themselves the first targets that the central government should guard against. Constantly changing local governors makes it impossible for local governments to form close ties and therefore cannot challenge the central government.