How do people calculate the five elements?

People in the Five Elements use Jin Mu to distinguish fire, water and earth.

Five elements is a systematic view of ancient Taoism in China, which is widely used in traditional Chinese medicine, geomantic omen, numerology, physiognomy and divination. The meaning of the five elements includes five basic trends in the evolution of Yin and Yang: water (moistening the lower part), fire (burning the upper part), gold (converging), wood (prolonging) and earth (neutralizing). Ancient philosophers in China used the theory of five elements to explain the formation of all things in the world and their relationships. It emphasizes the whole and aims to describe the movement form and transformation relationship of things. Yin and Yang are ancient theories of unity of opposites, and the five elements are primitive system theories.