Taijitu as the Joseon royal standard. Since the 1960s, "yin-yang symbol" is most widely applied to the "He tu" symbol which combines the two interlocking spirals with two dots. In the standard form of the contemporary "yin-yang symbol", one draws on the diameter of a circle two non-overlapping circles each of which has a diameter equal to the radius of the outer circle. One keeps the line that forms an "S", and one erases or obscures the other line. The design is also described "pair of fishes nestling head to tail against each other". The Soyombo symbol of Mongolia may be
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