Which system was Zhao Yan Metropolis Daily related to in ancient times?

Zhao Yan Metropolis Daily is related to the ancient enfeoffment system.

Zhao Yan: Hebei is commonly known as Zhao Yan. The reason is that Yan and Zhao belonged to ancient times. So Hebei will be called the land of Yanzhao, until now. Yan was a vassal state under the enfeoffment system in the Western Zhou Dynasty, and Zhao was a vassal state after the three kingdoms were divided into Jin in the Warring States Period.

Yanzhao culture is a kind of regional culture produced in Yanzhao area during the Warring States Period. The division of Zhao Yan should take the present Yellow River as the southern boundary, and Taihang Mountain and Yanshan Mountain as the western and northern boundaries. The formation of Yan culture is mainly marked by aligned revenge and the plot of Yan Taizi Dan to assassinate the king of Qin. Zhao culture is represented by riding and shooting. In the later period of Zhao culture, it was divided into three parts, one part was integrated into the Jin cultural system, the other part belonged to Xing culture, and the other part was transformed into wild culture.

Zhao Yan cannot be based on the provincial boundaries of Hebei Province today. Today, Hebei Province is also called Zhao Yan, and its provincial boundaries are generally consistent with those of Yan and Zhao during the Warring States Period. However, the commonly understood regional culture refers to the cultural characteristics that persist in a general area. Its geographical division is often a fuzzy natural division, because the cultural characteristics that persist in history will never be completely separated by artificial administrative divisions.

Introduction of packet system:

The enfeoffment system is the enfeoffment system for princes by ancient kings or emperors in China. The Shang dynasty began to enfeoffment princes, with titles of Hou and Bo. After the Western Zhou Dynasty destroyed the Shang Dynasty, because its capital was far away from the northwest, it was not conducive to controlling the vast territory and ruling the descendants of the Shang Dynasty. They distributed royal children and heroes on a large scale by fiefs and residents. Governors enjoy hereditary sovereignty in their fiefs, and they also have the responsibility to obey the emperor's orders, pay tribute regularly, provide military salute and forced labor, and safeguard the security of the Zhou Dynasty.

During the Spring and Autumn Period and the Warring States Period, the county system adapted to centralization gradually replaced the enfeoffment system. Qin Shihuang unified the whole country, popularized the county system, abolished the enfeoffment system and established the first autocratic centralized dynasty. Since then, there have been examples of enfeoffment, but the nature is not exactly the same.