Chinese sun and moon mirrors being hung round the neck, or because necks are concave things. Liu An's (c. 139 BCE) "Huainanzi" "Masters of Huainan", which is a compendium of writings from various schools of Chinese philosophy, was the first text to record "fangzhu" dew-collectors. Two "Huainanzi" chapters metaphorically use "sun and moon mirrors" to exemplify "yang" and "yin" categories and elucidate the Chinese notion of "ganying" "cosmic resonance" through which categorically identical things mutually resonate and influence each other. The "yángsuì" 陽燧 "burning-mirror" is "yang", round, and sun-like; the "fāngzhū" 方諸 "square receptacle" is "yin", square, and moon-like. The first context describes "yangsui" and
Yin Yang Style Yin Yang Style The Tian family's Yin Yang Style of the martial art Bagua Zhang originated in the area around the Ermei and Qingzhen Mountains of Sichuan Province. It was transmitted from the Daoists Bi Yun and Jing Yun during late Ming Dynasty and early Qing Dynasty. Tian Hui (田廻) was the ninth-generation-continuator and made contributions on revealing, organizing and practicing Bagua Zhang, spreading promoting, and writing books of Yin Yang Bagua Zhang to the public. The works "Python form palms" (蟒形掌) and "Lion form palms" (狮形掌) in Tian family's Yin Yang Bagua Zhang are part of the "Chinese Wushu