Is the waist connected up and down? Is the hub to keep the whole? Weight? And the balance of the main joints is to control the whole? The important parts of the flexible movement of each joint are the main factors that make the dance movements aesthetic. Waist training? Is it reinforcement learning? Flexibility and flexibility of waist and artistic expression? . "The dance steps are unfortunate, beautiful or not, look at the waist." Kindergarten teachers study? Is it widespread because of the psoas muscle? Is it not strong or weak in waist extension? Improper and wrong dance movements are also the main obstacles that affect and restrict their dance learning. So you need to get in? How flexible is the waist? What is hidden in the cultivation and promotion of quantity? Set toughness, twist,? , living energy? On this basis, can it reflect the perfection and completion of dance modeling? A series of jumping, turning and turning skills can show extremely rich performance? A surname; Short for Europe; lucky