What does the vertical bar in the center of the palm represent?

Is it a straight line from the center of the wrist to the middle finger? This is fate line. It is related to heredity and represents the rise and fall of people's physique, cardiovascular system and energy. You can go to the bookstore to buy a book about palmprint diagnosis, which is quite interesting.

Also known as the fishball line, if the top is bifurcated and closed like a tennis racket, it indicates gastroptosis. Of course, it depends on whether it crosses other lines and indicates other physical symptoms.