The relationship between man and nature is a basic issue in traditional Chinese culture. From the beginning of human civilization to modern times, humans have never stopped questioning how the universe (heaven) was formed and how life (human beings) was formed. Thinking and exploration of how it came into being and what the relationship between heaven and man is. "The essence of human beings is the sum of the relationships between 'human beings' and 'human beings'."
? Heaven is the origin of man, and man is the result of heaven, that is, the evolution of man from the things in nature. The "Old Book of Tang·Biography of Sun Simiao" contains: "Those who are good at talking about Heaven must have their roots in people; those who are good at talking about people must also have their roots in Heaven." Traditional Chinese medicine has inherited the genes of traditional Chinese culture, from the study of Heaven to humans. , From the discussion of human beings to heaven, it can be considered that traditional Chinese medicine is a science that takes "the unity of nature and man" as its theoretical core and explores the laws of human life activities.
"Unity of man and nature" means that man and nature must be one and live in peace, without talking about conquering and being conquered. The ideological concept of "the unity of nature and man" was first elaborated by Zhuangzi, and was later developed into the philosophical thought system of the unity of nature and man by Dong Zhongshu, a Confucian thinker in the Han Dynasty, and thus formed the main body of traditional Chinese culture. The universe is naturally a big world, while humans are a small world. Man and nature are essentially connected, so all human affairs should comply with the laws of nature to achieve harmony between man and nature.
The unity of nature and man is not only a thought, but also a state. Heaven and man are originally one. However, due to the various regulations, systems and moral norms formulated by humans, humans have lost their original natural nature and become out of harmony with nature. The purpose of human behavior is to break down these barriers imposed on the human body, liberate human nature, return to nature again, and achieve a spiritual state of "all things and I are one".