Each of the twelve meridians has five specific points from the end of the extremities to the elbow or knee, namely, the well, the Xingying, the Tao, the Jing, and the He, collectively known as the “five acupoints”. This is the size of the water flow to describe the characteristics of each meridian qi from small to large, from shallow to deep. “The outflow is the well, the slip is the Xingying, the injection is the transmission, the line is the Jing, and the entry is the He, and all the twenty-seven qi flowing are in the five acupoints.” (Ling Shu? (Nine needles twelve original) means that the qi from the end of the limbs upward action on the head and torso, like water flow from small to large, from shallow to deep, the qi first out, like the source of water, so called “well”, mostly located in the side of the limbs claw nail. When the meridian qi is a little stronger, it is like water flowing in a slight stream, so it is called “Xingyi” and is mostly located at the palm of the fingers (toes). When the meridian qi is gradually more abundant, it is like a larger flow of water, so it is called “los” and is mostly located near the wrist (ankle) joint. The meridian qi is full, like the long flow of water, so it is called “Jing” and is mostly located at the wrist (ankle) or arm (shin). The meridian qi is unified and deep, like the convergence of water, so it is called “he” and is mostly located near the elbow (knee). Each of the five acupuncture points has its own characteristics: the well point can be used to open the orifices and awaken the mind, which can be used for mental confusion and boredom; the fluorescence point can be used to drain the evil fire, which can be used for fever; the transfusion point can be used for episodes of disease and joint pain; the Jing point can be used for asthma and throat disease; and the he point can be used for six internal diseases such as gastrointestinal diseases. This is what the “Ling Shu? It is said in the “Shun Qi: A Day Divided into Four Times” that “for those who are sick in the hide, take the well; for those who are sick in color, take the Xingying; for those who are very sick in time, take the Lose; for those who are sick in sound, take the Jing; for those who are full of blood, take the Jing; for those who are sick in the stomach, and for those who are sick with uncontrolled diet, take the He.” And the Supplementary Explanation of the Book of Difficulties? The explanation of the “Sixty-eight Difficulties”: “The well is responsible for fullness under the heart, the Xin is responsible for heat in the body, the Losing body is responsible for pain in the heavy joints, the Jing is responsible for wheezing and coughing, cold and heat, and the He is responsible for rebellious qi and leakage.” Ling Shu? The “Evil Qi Zangfu Sickness” summarizes: “Xinxu treats the external meridians, and He treats the internal meridians.” This means that the Xingyi and Xue points of each meridian treat diseases in the external meridians, and that the Hefei points treat diseases in the six internal organs. The Nanking Jing also combines the five acupuncture points with the five elements, and on this basis proposes the method of “tonic mother and diarrhea”. The Jing points are also the “root” points of the twelve meridians, as they are located at the ends of the limbs and are easily accessible for clinical examination and treatment. Acupuncture, pressure, or pulsed electrical stimulation of the well points often results in meridian phenomena; the temperature difference between the left and right well points is significant during disease, and a thermometer can be used to measure the temperature difference between the well points on both sides of the body to check the balance of the meridians and provide reference for identification of the internal organs and meridians. The Hop point is the last of the five acupoints and is located near the elbow and knee joints. Among the six internal organs, the large intestine, the small intestine, and the three jiao, there is another healing point on the foot three yang meridian, called the lower healing point. Ling Shu? It is said in the book “The Xinxing (Xinxing), which is the outer meridian, and the Hefei (Hefei), which is the inner mansion”. This refers to the six internal organs’ lower healing points. The six internal organs on the foot Sanyang meridian are collectively called the “six internal organs”, namely “the stomach in the (foot) three li, the large intestine in the giant void upper Lian (upper giant void), the small intestine in the giant void lower Lian (lower giant void), the Sanjiao in the Wei Yang, the bladder in the central committee, and the gall bladder in the Yang Lingquan. ” This is because “the large intestine and small intestine both belong to the stomach”, so their points are on the foot Yangming Stomach meridian; the water channels of the three jiao are from the bladder, so their points are on the foot Sun Bladder meridian; the six points under the internal organs are “the Yang veins that are separate from the internal ones, and belong to the House”, which are clinically significant in treating The six internal organs points are “the internal part of the Yang Vessel, which belongs to the capital” and are clinically useful for treating “internal organs”. Other points such as Xingyi and Liao are used to treat external diseases of each meridian.