In ancient times, why was the place where the prince lived called "East Palace"?

The prince lives in the East Palace, but he doesn't live in other palaces. The second is convention.

first, in ancient times, the owners or shopkeepers were both Dong Weng and Dong Jia, and there was a moral in this. East is the direction in which the sun rises, which also implies that the master's fortune and career will never decline like the rising sun. In ancient times, the heirs of a large family, that is, the eldest son, all lived in the east yard or the east house, so as to hope that their family business would be succeeded by others, and another point also implied that children would continue. After all, in ancient times, successors were highly valued.

As the heir of a country, the prince will live in the palace in the east, which means spring. The place where the prince lives can be called either the East Palace or the Spring Palace. East has the meaning of vigor and vitality, and spring has the meaning of revival of all things, which also has the meaning of hoping that the country can prosper.

Second, it is a common practice for a prince to live in the East Palace. At first, the East Palace did not represent the residence of the prince.

In the Shang Dynasty, the order of succession to the throne was to let the younger brother go first, and only children would inherit if there was no younger brother. By the Zhou dynasty, the system of the eldest son's accession to the throne was formulated, which was also the early stage of the Eastern Palace system. It is recorded in "Poem Wei Feng Shuo Ren": "Sister of the East Palace, Aunt of the Duke of Xing." This is the earliest appearance of the East Palace, and Mao Heng biography said: "The East Palace, Prince Qi also." This is the earliest record of a prince living in the East Palace. Later, due to the chaos of succession to the throne in the Spring and Autumn Period, the East Palace could not represent anything.

Later, the first emperor didn't set up a prince before his death, which was also one of the reasons for the country's destruction. Liu Bang learned this lesson and set up a prince early. Since then, the Oriental Palace system has become a routine.