According to Confucian philosophy, what is the primary duty of an emperor?

In Confucian philosophy, the primary duty of an emperor is to act virtuously as an example for his subjects. Confucianism emphasizes the importance of morality, ethical governance, and the cultivation of virtue. An emperor, viewed as the "Son of Heaven," is expected to embody these ideals, demonstrating moral integrity and making decisions that reflect benevolence and righteousness. By leading through virtue, the emperor sets a standard for the behavior of his subjects, thereby promoting social harmony and moral order within the state. This emphasis on moral leadership is central to Confucian thought, highlighting the belief that a just and moral ruler will inspire the populace to behave similarly, thus ensuring stability and prosperity in the realm.