Writing idea: Don't write directly, but pay attention to changing the description angle in time to make the description more specific and give readers subjective feelings. Clear, natural and clear, not messy, pour out your thoughts and feelings.

People, the most precious thing is life, and life belongs to people only once.

A man's life should be spent like this: when he looks back, he will not regret his mediocrity and waste his time, nor will he feel guilty because of his meanness and vulgarity. In this way, on his deathbed, he can say, "I have devoted all my life and energy to the most magnificent cause in the world-the struggle for the liberation of mankind."