Leather bullet is still operated with the middle finger end. First, lift the middle finger and leave the skin for an inch or two, then aim the middle finger at the center of the acupoint and hit it down. When you click, you should raise the strength, which looks elastic. In this way, the finger force of clicking is on the skin surface and will not cause an important imbalance in hitting. A dozen mentions are 1 time. The number of hits is still 100. The severity of the beating also depends on the condition. As for the speed of percussion, percussion is generally a quick technique. Because it can generate heat quickly, it is equivalent to moxibustion.