It is generally believed that Tai Ji Chuan seeks quietness in motion and Qigong seeks quietness in motion. The two are opposite and complementary, and I have always held this view and put it into practice. But recently I have been thinking, are these two dynamic or static? First of all, they are different in nature. Tai Ji Chuan exercises the body of limbs, while Qigong exercises the internal qi under the guidance of ideas. Tai Ji Chuan's quietness is a calm state of mind, while Qigong's quietness is a physical representation. It can be seen that the connotations of motion and static are different. Secondly, qigong seeks movement in quietness, that is, seeking internal qi movement; Tai Ji Chuan's seeking quietness in motion is only a means and method (resisting motion with quietness), and quietness is not an end, but the real purpose he pursues, and it is also the movement of internal qi. Only static (static) can make good use of ideas (effortless) and realize the movement of internal qi under the guidance of boxing potential.