Yinyang as Qi (Vital Energy) The most enduring interpretation of yinyang in Chinese thought is related to the concept of qi (ch'i, vital energy). According to this interpretation, yin and yang are seen as qi (in both yin and yang forms) operating in the universe.

Yin and Yang are the underlying principles of Chinese philosophy and medicine. Good health is believed to come from a balance of Yin (negative, dark, and feminine) and Yang (positive, bright, and masculine).

yinyang, in Eastern thought, the two complementary forces that make up all aspects and phenomena of life. Yin is a symbol of earth, femaleness, darkness, passivity, and absorption. It is present in even numbers, in valleys and streams, and is represented by the tiger, the color orange, and a broken line.

Yin, Chinese for “female” or “moon,” represents darkness, femininity, passivity, and the earth. Yang (“sun” or “male”) represents light, masculinity, activity, and the heavens.