Half-clenched fist, first hit the right chest with your left hand, then hit the left chest with your right hand, from top to bottom, and then from bottom to top. 200 hits to the left and right chest. Pat the chest first and then the back. The hand is still half clenched, then the left hand reaches behind the head and slaps the right back, and the right hand slaps the left back. Tap each side 100 times. Frequent slapping on the chest and back helps to relieve the symptoms of respiratory and cardiovascular diseases. At the same time, it can also prevent and treat muscular atrophy in middle-aged and elderly people, promote local muscle health, increase vital capacity and enhance immunity.