The key to build a harmonious society is to achieve the harmony of interests. The essence of modern legislation is not only a process of negotiations in the interest of identification, the interest of choice, and the interest of integration but also a process to coordinate the interests amony people. The legislature should coordinate the interests by establishing a series of principles and systems and identifying the main interests of the distribution of rights and obligations. The main goal of legislation is to promote the building of a harmonious society.