Yin and yang (English: /jɪn/, /jæŋ/), also yinyang[1][2] or yin-yang,[3][2] is a concept that originated in Chinese philosophy, describing an opposite but interconnected, self-perpetuating cycle. Yin and yang can be thought of as complementary and at the same time opposing forces that interact to form a dynamic system in which the whole is greater than the assembled parts and the parts are important for cohesion of the whole.