According to legend, before the formation of heaven and earth, the universe was chaotic, and Pangu created the world, which divided chaos into two parts, the sky was Yang and the earth was Yin, thus resulting in the concept of Yin and Yang.

Tai Chi:

Man and everything are formed by the interaction of Yin and Yang and the five elements of fire, water, wood, gold and earth. The five elements are unified in Yin and Yang, and Yin and Yang are unified in Taiji.

Five elements:

It is gold, wood, water, fire and earth. Ancient philosophers in China classified the nature of all things in nature into these five categories, and explained the origin of all things in the world.

Gossip:

At first, the world was chaotic and infinite. It is said that Pangu created the world, which was heavy and embarrassing, and it was divided into two parts. Second instrument: refers to yin and yang, yin gathers in water, yang gathers in fire, and water and fire are the essence of yin and yang. Then it becomes a square, and four squares are paired to form four elephants. Add four elephants to the square and it becomes gossip. From gossip to everything, it is all kinds of natural phenomena and personnel phenomena.

For the original text, please refer to Zhou Dunyi's Illustration of Taiji in Song Dynasty: Wuji and Taiji. Tai Chi moves to generate yang, moves to be extremely quiet, and static generates yin, while static moves to be extremely quiet. Dynamic and static are mutually rooted. Divided into yin and yang, two instruments stand. Yang is yin, and fire, water, wood, gold and earth are born from this. Five qi shun bu, what to do at four o'clock Five acts of yin and yang, yin and yang are Tai Chi, and Tai Chi is infinite.

Once these concepts are clear, we can discuss roles.

Function 1: Explore the law, so as to know the past, exist the present and know the future. Common forms such as geomantic omen and divination.

Function 2: Used in health care medicine and other fields. Huangdi Neijing skillfully combines the thoughts of Yin and Yang and five elements to form a relatively complete theory of five elements in traditional Chinese medicine, which can guide medical practice and disease prevention.

Function 3: five lines of gossip's thought of Yin and Yang Taiji is a dialectical thought, which can be used to guide people's behavior and avoid being extreme and one-sided.

I hope it helps you ~!