Lifeline is the name of western palmistry, and China's palmistry is called "land pattern", which is one of the three main lines of human palm. It starts from the midpoint between the index finger root line and the thumb root line (which is the dividing line between the earthquake position and the displacement position), surrounds the whole thenar, and extends to the wrist striation in an arc parabola. Represents vitality and health. From its radian, thickness and shape, we can see a person's resistance, physique and physical strength.
Lifelines originate from yin and yang. The ancients thought that Pangu opened the sky, Yang Qing was the sky, and the cloudy sky was the earth. Yang Qi is a mixture of Yang-Qing Qi and Yin-Yang, thus cultivating everything. The average yin and yang in all things evolved into human beings. The person with the highest yang spirit becomes a god, and the person with higher yang spirit becomes a mountain god or a spirit beast. Those who are yin turn into nothingness, and those who are slightly yin turn into vegetation. These are just legends. Lifeline has nothing to do with longevity, and there is no real scientific basis.