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A diagram illustrating the concept of taiji, called a taijitu. The above design, depicting interlocking swirls of yin and yang around a central void, is the symbol's original form as introduced by Ming-era philosopher Lai Zhide
In Chinese philosophy, taiji (Chinese: 太極; pinyin: tàijí; Wade–Giles: t'ai chi; lit. 'greatest extent'; trans. "supreme ultimate") is a cosmological state of the universe and its affairs on all levels, involving the interaction of Yin and Yang, the Five Phases and finally, all the concrete things in the universe. More concretely, taiji is a conceptual current throughout religious and philosophical traditions indigenous to China, contemporaneously studied and applied in the profession of acupuncture, and within traditional Chinese medicine throughout and beyond the Sinosphere.
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