Then the left hand and left foot come out at the same time, the left middle finger is taken out from the root of the right index finger, and the hands are torn apart. At the same time, the left foot pushes forward to the right foot, and the toes move forward, still like a three-in-one style.
Further forward, the left foot and left hand step out at the same time, and the right foot and right hand step forward again, which is still the same as the left type. It's the same to alternate back and forth, you don't have to insist on how many times you decide to go back and forth. If there are many people, or dozens, or hundreds, or even tens of millions of people, how many times to go back and forth, always follow the passwords prepared during the exercise and the rules of setting, doing and stopping taught in teaching practice.