Combined with real life, talk about the understanding and experience of the sentence "people are inherently mortal, or they are heavier than Mount Tai or lighter than a feather"?

The final outcome of man is death. Some people die like Mount Tai. Thick. Some people are as light as a feather. It's like I didn't come into this world. We should put our limited life. Throw yourself into the infinite realization of your own value. It's important to bring yourself into this world. Since everyone will die. The ending is the same. Then why not work hard? Let your limited life shine brightly.