Mohism is a school of philosophy in the Eastern Zhou Dynasty in China and one of the hundred schools of thought. Together with Confucianism represented by Confucius and Taoism represented by Laozi, it became the three major philosophical systems in ancient China. Han Feizi, a representative of legalism, called it "the outstanding learning in the world", and Mencius, a representative of Confucianism, once said that "the words of the world, if not returned to Yang (Yang Zhu, a representative of Taoism), will be returned to Mo (Mozi)", which proved this point. Yang Mo is originally two sides of the same coin, so Yang Mo complements each other. But people have always used Mencius' general way of thinking to evaluate Yang Mo, which is unfair [1].

Mohism was born in the Warring States Period. The founder is Mo Zhai (Mozi). Mohism is a disciplined academic group, and its leader is called "Giant". When its members go to various countries to serve as officials, they must implement Mohism and their salaries must also be dedicated to the group. Mohist school is divided into early and late stages: the early stage mainly involves social politics, ethics and epistemology, and pays attention to secular wars; In the later period, Mohism made an important contribution to logic and began to move closer to the field of scientific research.

The main ideas of Mohism are: equal love between people (universal love), opposing wars of aggression (non-attack), advocating economy, opposing extravagance and waste (frugality), attaching importance to inheriting the cultural wealth of predecessors (knowing ghosts) and mastering the laws of nature (ambition).

Due to the unique political attribute of Mohist thought and the collusion policy of Emperor Wu of the Western Han Dynasty, Mohist thought was continuously suppressed, gradually losing its realistic foundation of existence and gradually dying out in China. It was not until the late Qing Dynasty and the early Republic of China that scholars rediscovered Mohism from that pile of old papers and discovered its progress. In recent years, with the efforts of many new Mohists, Mohism has revived, and it has shown the trend of starting a prairie fire because of its progress.