Yin and yang

Yin and yang (jɪn and jæŋ), yinyang, or yin-yang is a Chinese philosophical concept that describes opposite but interconnected forces. In Chinese cosmology, the universe creates itself out of a primary chaos of material energy, organized into the cycles of yin and yang and formed into objects and lives. Yin is the receptive and yang the active principle, seen in all forms of change and difference such as the annual cycle (winter and summer), the landscape (north-facing shade and south-facing brightness), sex (female and male), the formation of both men and women as characters, and sociopolitical history (disorder and order). Taiji or tai chi () is a Chinese cosmological term for the "Supreme Ultimate" state of undifferentiated absolute and infinite potential, the oneness before duality, from which yin and yang originate. It can be compared with the old wuji (無極, "without pole"). In the cosmology pertaining to yin and yang, the material energy which this universe was created from is known as qi. It is believed that the organization of qi in this cosmology of yin and yang has formed many things. Included among these forms are humans. Many natural dualities (such as light and dark, fire and water, expanding and contracting) are thought of as physical manifestations of the duality symbolized by yin and yang. This duality lies at the origins of many branches of classical Chinese science and philosophy, as well as being a primary guideline of traditional Chinese medicine, and a central principle of different forms of Chinese martial arts and exercise, such as baguazhang, taijiquan (tai chi chüan) and qigong (chi kung), as well as appearing in the pages of the I Ching. The notion of duality can be found in many areas, such as Communities of Practice. The term "dualistic-monism" or dialectical monism has been coined in an attempt to express this fruitful paradox of simultaneous unity and duality. Yin and yang can be thought of as complementary (rather than opposing) forces that interact to form a dynamic system in which the whole is greater than the assembled parts.

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Yin and yang

I Ching

The I Ching or Yi Jing (, AUDYiJing.oggyi4-jing1), usually translated Book of Changes or Classic of Changes, is an ancient Chinese divination text that is among the oldest of the Chinese classics. Originally a divination manual in the Western Zhou period (1000750), the I Ching was transformed over the course of the Warring States and early imperial periods (500200) into a cosmological text with a series of philosophical commentaries known as the "Ten Wings".

Taijitu

In Chinese philosophy, a taijitu () is a symbol or diagram () representing Taiji () in both its monist (wuji) and its dualist (yin and yang) aspects. Such a diagram was first introduced by Neo-Confucian philosopher Zhou Dunyi (周敦頤; 1017–1073) of the Song Dynasty in his Taijitu shuo (太極圖說). The modern Taoist canon, compiled during the Ming era, has at least half a dozen variants of such taijitu. The two most similar are the "Taiji Primal Heaven" () and the "wuji" () diagrams, both of which have been extensively studied during the Qing period for their possible connection with Zhou Dunyi's taijitu.