Yin and yang of the observation. The yin yang (i.e. taijitu symbol) shows a balance between two opposites with a portion of the opposite element in each section. In Taoist metaphysics, distinctions between good and bad, along with other dichotomous moral judgments, are perceptual, not real; so, the duality of yin and yang is an indivisible whole. In the ethics of Confucianism on the other hand, most notably in the philosophy of Dong Zhongshu ( 2nd century BC), a moral dimension is attached to the idea of yin and yang. These Chinese terms "yin" 陰 or 阴 "shady side" and "yang" 陽 or
Taoism in which Taoism continues to be an "order" of the larger body of Chinese religion. Laozi is traditionally regarded as one of the founders of Taoism and is closely associated in this context with "original" or "primordial" Taoism. Whether he actually existed is disputed; however, the work attributed to him—the "Tao Te Ching"—is dated to the late 4th century BCE. Taoism draws its cosmological foundations from the School of Naturalists (in the form of its main elements—yin and yang and the Five Phases), which developed during the Warring States period (4th to 3rd centuries BC). Robinet identifies four components in