Great Harmony is an ancient thought of China, which refers to the ideal world that human beings can finally reach, and represents the beautiful vision of human beings for the future society. The basic feature is that everyone loves and helps each other, and every family lives and works in peace and contentment. There is no difference, and there is no war. This state is called "one world", and this world is also called "one world". Modern times have joined the idea of global politics, economy, science and technology and cultural integration. Although the idea of Great Harmony is China's, the utopia, modern capitalism and global village in the west are also very similar to Great Harmony in many places.

Datong society is the last ideal society or the highest stage of human society in China people's ideological tradition. Datong society is a social system owned by the whole people, including public ownership of power and property, first of all, public ownership of power. The slogan of public power is "the world is for the public", and the specific measures are to select talents, uphold faith and cultivate harmony.

Datong society is the highest ideal society advocated by ancient Confucianism in China or the highest stage of human society, which was highly praised by Confucian scholars in past dynasties.

Trust and harmony are the core of good interpersonal relationships, and "the world is public" is the premise and foundation of establishing good interpersonal relationships. "The world is public", everyone is a member of society, and society has everyone's share. Food and clothing, equal status, there is no possibility of coercion, and there is no need for attachment. This is a summary of interpersonal relationships in the Great Harmony World. This interpersonal relationship based on the premise that "the world is public" has also been tampered with by post-Confucianism. "Book of Rites Justice" explains: "Those who believe in repairing relationships must talk about it; Believe, do not bully; Practice; Harmony and intimacy. There is no deception this spring. He has confidence in what he said. Therefore, the funeral of the public asked Zhou Fengyun, and he did not believe in the people at home, and the people believed it. " Through the interpretation of justice, it is only a superficial phenomenon of oral communication, and this phenomenon is the result of Wang Hua's influence, and the essence of the Great World has been castrated.