Turn on the fan to enrich the picture, and put your hands on your legs naturally.
Gently lift your hair, over your head, and tuck your abdomen sideways.
Put your hand on your forehead and let it droop naturally. Note that the shoulders are at right angles to the abdomen.
Hold the wall with one hand, bend your hand behind your back, and stretch forward slightly to show your legs.
Put your hands on your forehead, bend your hands behind your back and cross forward.
Open the fan and put it on the thigh side, with the top span supported and the knees bent into an S-shape.
Shoulders, abdomen and arms are at right angles, waist is slender, hands support the desktop.
Turn on the fan, cover your mouth, and tuck your hands in.