When people live to a certain age, their physical functions begin to decline. When it drops to a certain level, people die. If all kinds of accidents happen in life, people will die. In order to pursue immortality, the world has used various methods, and there are many stories of seeking immortality in history. Chui fook and Qin Shihuang both pursued Dan medicine. But so far, I haven't seen an ancient man still living in the present. Let's give up the idea of immortality. It is more direct and realistic to cherish everything in front of you and not to pursue those illusory things.