Introduction to the rules of ball games：1. avoid red spots. 2. touch the green point of invulnerability. 3. stay in the center, do not touch the side. 4. use red dots that are not easy to break. 5. get extra points by moving around. 6. live on.
Introduction to the rules of ball games：1. avoid red spots. 2. touch the green point of invulnerability. 3. stay in the center, do not touch the side. 4. use red dots that are not easy to break. 5. get extra points by moving around. 6. live on.