Lunge: Left lunge: Turn your right foot slightly to the right and move your left foot forward (step with the inside of your heel on the ground). On the contrary, it is a right lunge. When doing a lunge, pay attention that one leg cannot be straightened, otherwise the strength will be lost and "flattened". Horse stance: Two feet are separated by three feet, and the hips are naturally dropped. The center of gravity is to the right, which is the right side of the horse stance; the center of gravity is to the left, which is the left side of the horse stance. Alternate exercises. Note: The knee of one foot in the lunge should not exceed the toe, and keep the natural bend. When taking a left virtual step, be sure to keep your body upright and do not lean forward or backward. The hips sink naturally. Practice alternately left and right. Figure 8 virtual step: The two feet are slightly apart, and the other heel is slightly lifted. For example, if the left heel is lifted, it is a left figure 8 virtual step. Pay attention to the roundness of the crotch. Independent step: Sit with your hips and knees slowly raised, and your toes naturally droop (do not buckle in or swing out). Practice alternately left and right. The footwork of Chen style Tai Chi: three main steps: upward step, backward step, and horizontal step.