Are the five elements calculated according to the first day of the first lunar month, or according to the beginning of spring in the twenty-four solar terms? thank you

It is calculated according to the beginning of spring in the 24 solar terms.

The Five Elements is a systematic view of Taoism in China since ancient times, 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 concept 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 general system theory.

The theory of five elements first appeared in the theories of Huang Lao and Taoism, aiming at describing the movement form and transformation relationship of things. The five elements theory is China's ancient theory of material composition, which is similar to the four elements theory of earth, water, fire and wind in ancient western countries. It is a theory integrating philosophy, divination, calendar, traditional Chinese medicine and sociology.