The concept of five elements originated from the Book of History, which simply refers to five common natural material materials: water, fire, wood, gold and earth; After the development and evolution from the Spring and Autumn Period and the Warring States Period to the Han Dynasty, a complete five-element system model was formed on the basis of the thinking of mutually reinforcing and restricting each other, and with the elements of yin and yang, four seasons, five directions and five virtues. The five elements, also known as the five elements theory, are the basic way to understand the world. The meaning of the five elements includes five basic dynamics of the evolution process of yin and yang: gold (representing convergence), wood (representing growth), water (representing infiltration), fire (representing destruction), and earth (representing fusion). Ancient Chinese philosophers used the theory of five elements to explain the formation of all things in the world and their interrelationship. It emphasizes the whole and aims to describe the movement form and transformation relationship of things. Yin and Yang are the ancient theory of unity of opposites, and the five elements are the original system theory.
The theory of the five elements is the core of Chinese traditional culture. Everything in the universe is composed of the operation (movement) and cycle of the five basic elements of wood, fire, earth, gold and water. It is often regarded as the ancient simple materialism philosophy. In terms of human body, the five elements represent the five viscera and six internal organs, each of which belongs to its own; A - bile, B - liver, C - small intestine, D - heart, E - stomach, E - spleen, G - large intestine, Xin - lung, None - bladder, Gui - kidney.
The ancient Chinese people looked up at the sky, down at the geography, close to the body and far from the things. According to the interaction between the sun and the moon and the periodic movement of the earth back and forth in December of a year, a complete set of Ganzhi age and month calendars suitable for the development of agricultural production in China has been