In Chen's Tai Ji Chuan old drill, the hand-leg winding method is shown as follows: a small guide thumb rotates in the palm direction as a forward winding, and a small guide thumb rotates in the palm direction as a reverse winding; The leading force of the external rotation little finger of the calf knee joint is forward winding, and the leading force of the internal rotation big finger of the calf knee joint is reverse winding. Chen-style Tai Ji Chuan is a whole spiral winding movement in terms of winding strength and physical quality. It is required to guide the internal and external organs, joints, muscles and meridians of the body and limbs to do uniform spiral movement under the premise of calming down and relaxing, which can promote the blood circulation of the whole body and dredge the meridians. In the process of exercise, the muscles of the whole body are tightened one by one, twisted and pulled circularly, rotated from the inside out and then from the outside to the inside, which can promote the friction between the body and nerves, viscera and qi and blood. It has a direct effect on strengthening physique, viscera, cardiopulmonary function and delaying aging. Master Mahong once said that "winding silk in the right and wrong direction can relax the meridians, and spiral motion can dredge the collaterals", so regular Tai Ji Chuan exercise can play a fitness role in relaxing the meridians and promoting blood circulation.