The basic requirement of jazz drum performance: "cross-tuning": natural relaxation. Tight front and loose back, swinging and bouncing. First, pay attention to breathing evenly, breathing as deep and long as possible, because the problem that is easy to appear at the beginning of practice is to hold your breath, causing tension, not finding the beat, and not practicing well. Second, pay attention to relax your shoulders and elbows and sink naturally. Don't put on airs, raise your arms too high. Generally speaking, the distance between the arm and the body is appropriate. 2. Tight front and loose back: refers to the playing state and the feeling of holding the mallet. "Tight front" means that it is important to hold the mallet, but you can't kill it. It is a feeling of tight inside and loose outside. "Loose back" refers to the relaxation of the elbow joint at the back of the wrist mentioned above. 3. "Swing" and "play" refer to the feelings and requirements of using mallets in actual performance. "Swing" is to throw off the wrist and control the change of strength with the swing of the wrist and the height of the hammer when playing. "Bounce" means that after the hammer hits the drum surface on the basis of throwing, the inertia of throwing and the vibration of the drum surface will make the hammer bounce quickly. If you don't throw or hit, the drum head will be crushed to death and there will be no good sound. At the same time, only by means of "throwing" and "playing" can we continuously improve the speed and strength of playing and complete some difficult skills. Finally, I wish you success in your studies!