(1) Because the top and buttocks are inactive, the phenomenon of stepping on the waist and buckling the buttocks appears.

(2) the upper body is not relaxed enough, the front waist is ribbed, the side waist is not in place, and the front chest is retracted.

The dynamic law element with waist as the axis is an inseparable whole in practical application. In particular, lifting and sinking are two elements that run through all actions, which can also be called "the foundation of elements". "Rushing, hugging, moving and lifting" cannot be separated from "lifting".

Every element needs certain movement ability and full connotation, and it needs constant practice and free application to produce a sense of body rhythm. The purpose of practicing body rhyme lies in the consistency of movement and connotation, so it is necessary to emphasize "silence in movement, little by little."

Pay special attention to the practice of elements, just like the "hand-holding" action in basic skills. The connection of such elements needs repeated practice and frequent practice. And the methods of practice are also varied. On the basis of sitting posture practice, standing posture, standing up and various foot positions are trained together.

In addition, this kind of practice should pay special attention to the diversity of music rhythm. Different musical rhythms can be handled in this way: in order to be coherent, they are performed at an average slow rhythm. Practice the continuity of breath and the extension of "line" when connecting various elements; Yes, very depressed. When every element is in place, it is very important to handle the "point" well.

There is no limit to the length and short of "slow lifting and quick sinking", "quick rushing and slow leaning", "long holding and quick inserting" and "quick moving". Only in the changeable rhythm can the rhythm of limbs be expressed. At the same time, you can train your eyes to "gather, release, condense and close".

Hand coordination is extremely important in element training. Its rule is: don't add hands at first, such as putting your hands on your knees or behind your back, which can help you really train your waist. When the sense of waist up and down, back and forth, diagonal, left and right, arc and so on is basically found, it must be handled by hand posture, forming the artistic requirements of element training.

The coordination of arms is very rich, and the general rules are as follows: "Lifting and sinking" can be combined with exercises such as one to two positions, two to three positions, external rotation to internal rotation, internal rotation to external rotation and so on. "Chongdui" can be combined with "palm lifting" and "chest lifting". "Protrusion" can be combined with "four-position bent arm" to form "two-position external rotation straight arm".

"Han" can cooperate with "four-position flexion arm external rotation" and "three-position circular arm internal rotation" "Move" can be combined with "wave your hand and raise your hand" and "four-turn two-position round arm" (mountain arm). The "side lift" arm should emphasize the combination of long lines. In this process, the arm should be from one to two, completing the whole process from meridian to upper arc.