Yin-Yang refers to a concept originating in ancient Chinese philosophy where opposite forces are seen as interconnected and counterbalancing.
It is commonly represented by the yin-yang symbol, a circle made up of black and white swirls, each containing a spot of the other.
Yin, Chinese for “female” or “moon,” represents darkness, femininity, passivity, and the earth. Yang (“sun” or “male”) represents light, masculinity, activity, and the heavens.
The balance of yin and yang was seen to influence health and order within an individual, society, and the entire universe.