How to see if people are healthy?

There is an interesting phenomenon. The length of a person is equivalent to the size of his middle finger, which is the length of the second middle finger. The unit of measurement of "same size" is the crystallization of the wisdom of our ancestors. They found that people's height is related to the distance between acupoints, so they invented this unit of measurement. The thumb and forefinger are close together, and the distance between two horizontal bars in the middle of the middle finger is one inch. This is equivalent to the length of a person. People who are tall grow among people; Short people are short among people. People are longer than people of the same size, and they are also called "longevity people". This kind of person's performance is 3 mm bigger than the middle finger.