From the perspective of genetics (not superstitious palm reading), the total number of ridges on ten fingers is too much or too little, suggesting that there may be hereditary diseases. If the triangle ridge formed by the little finger of the palm and the root of the index finger meets at an angle greater than 90 degrees, the possibility of congenital stupidity is very high. This is what my teacher said in the medical college genetic disease class. I don't remember the other details. If you are interested, you can check related books. In addition, when the liver is not good, it will form a liver palm. Clubbed fingers can be formed during heart disease, which is also helpful for diagnosis. Microscopic observation of subungual microcirculation is also helpful to the diagnosis of coronary heart disease. When the leaves of a tree become Huang Shi, experienced people can see what kind of fertilizer is missing in the soil, and the leaves are dry and spotted, which can be seen by experienced people at a glance.

Leaves can show what is in the soil, just as the palm is the reaction of human organs.

The palm is the densest part of human microcirculation, and there are many acupoints, which can be reflected in the hand, and each has its own area.

Palmprint can really show a person's health. Many people deny it because they don't understand it.

Before any modern instrument detects a problem, the problem can be shown in your palm. The key is to ask the right person.