Upper and lower body connect together.
Tai Chi Chuan is a whole body movement.
Connected.
"If you swim the ideal is to use all parts of your body. It's similar with Tai Chi. You try not to
just move bits of your body independantly. So for example as you turn your waist
from Beginning to Ward Off Left although you only initially transfer weight and turn your waist,
this also turns your right leg and foot on the heel and your torso, arms, hands, head and gaze
to your right corner. It is a whole body movement (on this occasion) controlled by your waist."
NB: Yin = Insubstancial / Empty / Soft