(1) The enfeoffment system means that the monarch enfeoffed his territory to his subordinates or courtiers and granted them corresponding titles and fiefs to strengthen his control over the whole territory. Feudal land is usually a certain amount of land and resources, as well as a certain population and army. Feudal officials need to arrange their families and subordinates in the fief, and increase their wealth and prestige by further developing and managing the fief. In the ancient history of China, the system of making princes and ministers was widely used, which won the emperor a stable and powerful national strength.

(2) The enfeoffment system first appeared in the Zhou Dynasty in China. The monarchs of Zhou Dynasty granted titles and fiefs to vassal states in order to disperse power and strengthen territorial control. Since then, with the passage of time, this system has been continuously developed and improved. By the Warring States period, the vassal states had basically become independent political entities, managing their fiefs and armies independently. However, after the reunification of the Qin Dynasty, the knighthood system of princes and ministers was abolished.

(3) The feudal system in Europe, similar to that in China, was widely used in medieval Europe. There are many similarities between the feudal system in Europe and the feudal system in China, including the enfeoffment of territory, the granting of titles and fiefs, and family inheritance. Feudalism has played an important role in European history, but it has also brought some disadvantages, such as frequent civil wars and the division caused by the feudal system and the deprivation of civilian rights.