The exact location of Tai Yuan point is between the radial tuberosity and navicular bone in the anterior region of the wrist, in the ulnar depression of the tendon of the extensor digitorum longus. It is effective in regulating blood circulation, promoting the lungs, calming asthma, and clearing heat from the stomach. When taking Taiyuan point, you can raise your thumb and find it in the medial depression of the large tendon that appears on the radial side of the transverse carpal stripe. Its more accurate location is in the anterior wrist region, between the radial tuberosity (the tapered projection of the lower end of the radius facing downward) and the navicular bone (located on the radial side of the proximal carpal bone and resembling a boat), and in the ulnar depression of the tendon of the extensor carpi radialis longus. Taiyuan has the effect of regulating blood circulation, promoting the lungs and calming asthma (promoting and opening the lung qi, so that the lung qi can purge and descend normally, calming the symptoms of asthma), and clearing heat from the stomach. This point can be used to treat cough, asthma, pulselessness, and wrist and arm pain. The specific acupuncture operation should be carried out by a professional doctor, do not do it blindly.