This poem is Lu You's Rain at Jianmen Road. This poem expresses that the poet's clothes are covered with dust and messy wine stains, and no place he has traveled makes people feel gloomy and sad.
In Li Bai's "Difficult Road to Shu", there is also a saying that "although the watchtower is strong, one person can keep it, and ten thousand people can't break it". This poem also expresses the sword gate, which is mainly lyrical, showing the arrogant spirit of contempt for powerful people, expressing sympathy for people's sufferings, being good at depicting natural scenery and expressing love for the mountains and rivers of the motherland. The whole article can see the danger of Jianmenguan, but it is also a modern tourist attraction.