What is the poem that expresses the poet's feelings of worrying about the country and the people in Ascending the Mountain?

Personally, I don't think "Ascending the Mountain" is concerned about the country and the people. The first four clauses are all about scenery, a vast and lonely scene, which also contains loneliness. "I came from three thousand miles away. Sad autumn, my sorrow for a hundred years, I climbed this height alone. " Obviously, it is the poet's sadness and expression of his wandering, lonely old age and half-life failure. If you feel that the national disaster has caused the author to wander for half his life, it is ok to feel lonely and helpless, and let others feel that the author is worried about people like himself. But I always feel far-fetched The author is also a person who has experienced a prosperous time. At that time, he didn't achieve anything, but kept following the footsteps of the Lord to build a career in troubled times, improve the depressed people's livelihood, and finally didn't realize his ambition. Du fu really thought of "protecting the world and making people happy" when the house leaked air, and the realm was very high. But by this time, the poet had reached a high level.