The theory of Yin-Yang and the five elements of Chinese medicine by acupuncture community the concept of Yin and Yang and the five elements are born of old (and naive) Chinese materialism, which reflects the conception of the world and the methodology of the ancient Chinese people in understanding and explanation of natural phenomena. The Yin-Yang theory holds that the world is material and that this material world is constantly evolving as a result of the reciprocal action of two opposing forces. The first Chinese doctors used the theory of Yin-Yang and the five elements to explain the physiological functions and pathological changes in the human body, and to guide the diagnosis and appropriate medical treatment. This theory is an important part in the formation and development of the theoretical system of traditional Chinese medicine (TCM). However, it cannot and must make a parallelism between materialism and dialectics elements contained in the theory of Yin-Yang and the five elements with the materialistic dialectic modern scientific. The five elements theory explains that the world is made of five basic elements: wood, fire, Earth, metal and water.
The existence of the material world depends on the promotion and mutual control between the five elements. This concept had exercised a profound influence on the early materialist philosophy of China and became the theoretical basis of the materialist worldview and methodology of the natural sciences in ancient China. In conclusion, Yin and Yang are the Supreme one polar manifestations of the Tao. Each is divided through the creative powers of the Tao into opposites and energetic dualities, which in turn give birth to the ten thousand things, their concrete manifestations that take form on Earth and in heaven.