Normal angle of tiger's mouth opening

The angle between 45 degrees and 90 degrees of thumb opening is the most common. Because the Yangming large intestine meridian of the hand passes through the lower gum, pressing Hegu point for 5 minutes will relieve the pain when the lower tooth hurts. If you have gingivitis, which lasts for a long time and recurs, it is also effective to press Hegu point frequently. Hegu is also a first aid point. If it is syncope caused by heatstroke, stroke, collapse, etc. You can pinch the patient with your thumb for 2 ~ 3 minutes, and syncope can generally be relieved. If you pinch people with your fingertips at the same time, it will be better to go back to Sue after waking up.

At the mouth of death:

Hegu, out of the "Lingshu Benbo". It belongs to the large intestine meridian of hand Yangming. Be original. On the back of hand, between metacarpal 1 and 2, the radial midpoint of the second metacarpal. Or put the thumb of one hand on the edge of the pulp between the thumb and forefinger of the other hand, and the tip of the thumb is a hole. However, there are superficial branches of radial nerve, palmar proper nerve of median nerve and dorsal vein network, and the proximal part is where radial artery penetrates into palm from the back of hand.