There is a saying among the people that "beating the Zusanli point is better than eating an old hen", and there is some truth to this. Zusanli is located 3 cun directly below the outer knee eye, that is, on the outer side of the anterior border of the tibia of the lower leg, four finger-widths below the knee joint. According to traditional Chinese medicine, Zusanli in the human body is a nourishing and strengthening acupoint. Acupuncture at this acupoint can treat digestive system diseases such as stomachache, abdominal pain and diarrhea, as well as hypertension, anemia, weakness, paralysis of the lower limbs and knee joint diseases. Patting the Zusanli point can stimulate the acupoints. Besides achieving the same effect as acupuncture, it can also enhance the overall immune function of the body and boost disease resistance. Because fingers and toes are far from the heart, they often have insufficient blood supply and reduced blood flow, resulting in cold hands and feet, which is especially more obvious in the elderly. Regularly patting the Zusanli area every day can dilate the microvessels in the fingers and toes, enhance blood circulation, warm the extremities, and alleviate the symptoms of cold hands and feet, achieving multiple benefits at once. Since human aging is related to microvascular occlusion and microcirculation disorders, patting the Zusanli point can also play a role in preventing aging.