The definition of taichi, according to Bruce Frantzis, and further below, two clips of Adam Mizner where he explains the concept of Zhong Ding, the ”central equilibrium,” as the ”essence of taichi”
> "Anything that is yin or yang comes from somewhere and that somewhere is Taiji. Taiji is an abstract philosophical term central to Daoist philosophy and cosmology. In English it is spelled in two basic ways: Tai chi and Taiji. For example, the name of the internal martial art of Taijiquan is composed of two parts: the philosophical principle of Taiji, and quan, which means “fist” and, by extension, a martial art. **Taiji is the mysterious, non-dual quality that generates and coordinates every separate yin-yang possibility within all the universe**. Taiji gives birth to every yin-yang, either physical or abstract in all creation’s times, places, and dimensions. Taiji itself has no qualities whatsoever, regardless of the opposites to which it is attached and intertwined. If any yin-yang set returns to its source, it returns to Taiji. In Laozi’s Daoism human essence ultimately returns to Taiji to become a person’s true spiritual essence, which is the Seventh Energy Body." (Laozi, Bruce Frantzis, and Alan Peatfield, Daodejing)
Clip 1:
https://fountain.fm/clip/Q5XO553J4omBg47zP8lV
Clip 2: