What does it mean to pinch the tiger's mouth to tell fortune?

The location of the tiger's mouth is as follows (Hegu, alias Tiger's mouth)

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.

Extended data

Qingre Zhitong Point: Hegu

Hegu point has the functions of clearing away heat, relieving exterior syndrome, calming and relieving pain, and has a good relief and treatment effect on head and face diseases. Headache, fever and toothache caused by wind-heat cold can't take effect immediately after taking the medicine, which can be relieved by acupressure at Hegu point, with acid, numbness and swelling as the appropriate.

If you have a fever, you can scrape the skin behind your neck with a porcelain spoon, or pull the surrounding skin with your fingers until it turns red and purple, which will help to expel the heat toxin and quickly reduce the fever.

Baidu encyclopedia-Hegu

People's Health Network-Pressing these acupoints for health care can effectively control hypertension, tonify kidney and protect heart.