Updated: May 28, 2020
The core of the Taoist theory of yin and yang is the belief that a balance of the opposing forces is necessary to maintain a good flow of chi and a content, successful life.
In Taoist and feng shui theory, yin and yang are dependent upon one another and which must always be in balance.
The principle of duality—the idea that all things are balanced blends of two things—is at the root of yin/yang theory. At the same time, most other spiritual philosophies believe in opposing dualities, such as good vs evil.
Universe system is said through the lens of Chinese Metaphysics that balance and equilibrium between opposites is a desirable state. Discord occurs when one principle outweighs the other.