There are many definitions of life, but in general, life is only a phenomenon of existence, and the viability of living things is life. . Because life is abstract, it is difficult to express. . But as a primate, exploring the nature of life is a task that someone must do, because if you want to live and live in a more valuable place, you need to know the meaning of your life. . Because it is difficult to express clearly in abstract language, there are many metaphors that compare life to something in real life, which is conducive to the understanding and analysis of life. .