" The lonely city is closed by the setting sun and the long smoke in the mountains " was a poem written by the Tang Dynasty poet Wang Zhihuan in his poem " Climbing the Stork Tower." It depicted a magnificent landscape painting that showed a serene and far-reaching artistic conception. The main functions of this poem were as follows: 1. Showing the author's bold and unconstrained feelings: Wang Zhihuan showed his open-minded and unrestrained side through the description of images such as "the setting sun in the thousand peaks" and expressed his yearning for freedom and open-mindedness. 2. Showing the brutality of the war: Because the poem described an isolated city and the scene of war, it could make the readers feel the brutality and cruelty of the war and enhance the readers 'yearning for peace. 3. Showing the author's reverence for history and culture: Wang Zhihuan expressed his respect and cherish for traditional culture through the description of history and culture in his poems, expressing his reverence for history and culture. The first and second parts of the poem," Smoke on the Thousand Mountains, Sunset, Lonely City, Closed " were mainly about war and history. Through images and concrete descriptions, the author expressed his reverence for history and culture, as well as his yearning for freedom and open-mindedness.