The emergence of the theory of "two processes" marks the formal formation of the ideological system of Neo-Confucianism in the Song Dynasty. Zhu Jian established a complete and exquisite ideological system of objective idealism, which marked the development of Neo-Confucianism to a mature stage.

Neo-Confucianism of Cheng and Zhu is an important stage in the development of Confucianism, which adapts to the transformation of feudal society from the early stage to the late stage and further strengthens the needs of feudal absolutism, makes Confucianism move towards political philosophy and has an important impact on the development of Confucianism.

It became an official school after the Southern Song Dynasty. During the Song, Yuan, Ming and Qing Dynasties, most rulers of past dynasties supported Cheng Zhu's Neo-Confucianism as the official ruling thought.

Impact:

The fundamental feature of Neo-Confucianism is to form a more complete conceptual and systematic philosophy and belief system with Confucian social, ethnic, ethical and personal life beliefs, and make it logical, psychological, abstract and truthful. This made Neo-Confucianism have a strong sense of autonomy, and formed a political idea that reason is above potential and Tao is above governance, which provided theoretical support for restraining monarchical power and making China's politics move towards civilians and non-governmental participation in and discussion of state affairs during the Song and Ming Dynasties. It also makes the logicality, abstraction and systematization of ethics and morals dominate Tian Li and Heaven, replacing the crude concepts of Destiny and Personality God, which is a great leap for China and the world philosophy.

Zhu Cheng Neo-Confucianism, also known as Zhu Cheng Daoism, is one of the main schools of Neo-Confucianism in Song and Ming Dynasties, and it also has the greatest influence on later generations. The natural principle of Neo-Confucianism is moral theology, which at the same time becomes the legal basis of Confucian theocracy and kingship. It was founded by two brothers (Cheng Hao and Cheng Yi) in the Northern Song Dynasty. During this period, it passed through disciples, then to Luo Congyan, then to Zhu in the Southern Song Dynasty.

On the theory of human nature, Zhu believes that people have the nature of "destiny" and "temperament". The former comes from Tai Chi theory, which is absolutely good. The latter can be divided into clear and turbid, good and evil. People should change their temperament through "respect" and "poverty".

Zhu's view of the rule of law in the world also believes that everything starts from Taiji and everything is the embodiment of natural laws. He believes that human relations, etiquette and national law are all reflections of natural law, and this principle existed before national law, so his views also have philosophical natural law thoughts.

Refer to Baidu Encyclopedia-Zhu Cheng Neo-Confucianism