central equilibrium

“Zhogn Ding, to put it simply, is the placement of the center of gravity. It is also the kungfu of Sinking the Qi to the Dantian. This placement of the center of gravity of the Dantian, is eternally not easy. It is not gain or lost at an instant.”

-Liu Xiheng. On Taijiquan. p. 17.

“Center of gravity is the Zhong Ding of Taijiquan” -Zheng Manqing, On Taijiquan. p. 17.