Yin-Yangology is the culture of the Zhou Dynasty.
Mr. Sheng Zhong, a Feng Shui master from China Construction Kanyu Research Institute, said this. He said:
The theory of Yin and Yang existed about two thousand years ago. Yin and Yang are the relationship between similar things in nature and a summary of the internal opposites of a thing. In other words, Yin and Yang are produced by the movement of two different substances. They play the role of opposing, supporting each other, influencing each other, and transforming each other. Yin contains yang, yang contains yin, the cathode changes to yang, and the anode changes to yin. The occurrence, development and change of all things in the universe are the result of the unified movement of yin and yang in opposition to each other.
The Yin-Yang theory believes that the world is a material whole, and everything in nature includes two opposing aspects of Yin and Yang, and the opposing sides are unified with each other. The unified movement of opposites of Yin and Yang is the fundamental reason for the occurrence, development, change and demise of all things in nature. Just as "Su Wen Yin and Yang Ying Xiang Da Lun" says, "Yin and Yang are the way of heaven and earth, the order of all things, the parents of change, and the origin of life and death." Therefore, the law of the movement of the contradictory unity of yin and yang is the inherent law of movement and change of all things in nature. The world itself is the result of the movement of the contradictions and unity of yin and yang.