Knee trembling: Exhale, keep your upper body relaxed, lean forward slightly, relax your knees, and regularly flex and quiver your knees.

trent: on the basis of trembling knees, the forefoot of both feet regularly slaps the ground.

Step-lifting: On the basis of step-lifting, one foot is used for step-lifting, and the other foot is used for sucking the leg and stepping on the ground, and two beats are completed.

the first basic step: on the basis of lifting the step, alternate steps left and right, and alternately swing your hands in front of your hips.