Taijitu during the Qing period for their possible connection with Zhou Dunyi's "taijitu". Ming period author Lai Zhide (1525–1604) simplified the "taijitu" to a design of two interlocking spirals. In the Ming era, the combination of the two interlocking spirals of the "taijitu" with two black-and-white dots superimposed on them became identified with the "He tu" or "Yellow River diagram" (河圖). This version was reported in Western literature of the late 19th century as the "Great Monad", and has been widely popularised in Western popular culture as the "yin-yang symbol" since the 1960s. The contemporary Chinese term for the modern symbol
Yin Yang Style origin of this style occurred when the Chinese ancestors combined the "Book of Changes" (易经) with the Yin Yang truth. Following the Eight Trigrams, they observed the actions of animals and environmental changes. Tian family's Yin Yang Bagua Zhang was created from these observations being studied and practiced over several generation. The practice routines is divided into eight forms: Python, Lion, Tiger, Bear, Snake, Horse, Monkey and Eagle. "Ba" means eight, "Gua" means form, and "Zhang" means palm. One "Zhang" palm is divided into eight postures. Each posture is divided into three different "Cheng" movements. The total is one hundred