‘Zhōng yōng’ (the Doctrine of the Mean) is a foundational Confucian concept referring to the ethical ideal of balance, moderation, and harmony—avoiding extremes in thought, emotion, and behavior. The character 中 (zhōng) means 'center' or 'middle,' suggesting equilibrium and impartiality; 庸 (yōng) here means 'common practice' or 'constancy,' emphasizing consistency in upholding that balanced path. Together, they denote not mediocrity, but the cultivated wisdom of responding appropriately to each situation without excess or deficiency.

This term originates from the Confucian classic *The Doctrine of the Mean*, traditionally attributed to Confucius’s grandson Zisi. It is widely discussed in philosophical, educational, and moral contexts—not as a rigid rule, but as an active, reflective practice of situational appropriateness. Modern usage extends to describing someone’s temperament (e.g., calm and measured) or a policy that seeks compromise and stability, especially in contrast to radical or polarized positions.