Some people look at the stars, some people look at the dust, and the past is clear. What do Chang 'an and Chang 'an mean?

On the road of life struggle, people and things are different, and the final outcome is completely different. In their efforts, some people look up at the night sky, and the stars in the sky bring endless power. Some people look down at the road and see dust everywhere, which is different from what optimists and pessimists see. In any case, positive optimism is the best choice.