harmony of yin and yang
A philosophical and cosmological term referring to the balanced union of complementary yin and yang forces, often used in traditional Chinese thought, medicine, and Japanese esoteric contexts.
The harmony of yin and yang is one of the fundamental concepts of Eastern thought.
陰陽 refers to yin and yang as a pair or principle, while 陰陽和合 specifically emphasizes their harmonious union.
和合 means harmony or concord in general, but 陰陽和合 is a fixed compound specifically denoting the harmony of yin and yang.
Compound of 陰陽 (いんよう, 'yin and yang') and 和合 (わごう, 'harmony, union'). The term is rooted in Chinese philosophy and was adopted into Japanese.