Appreciation: This is a masterpiece that has never appeared in its heyday. Youzhoutai: Jibei Building, in today's Beijing. Boarding this ancient Taiwan reminds me of ancient things. At that time, Yan Zhaowang was thirsty for talents, built a golden platform, and recruited all the sages in the world, so that the State of Yan could flourish. But this is about before me, where are those lost times? Behind me, where is the next generation? . From this, the author felt his misfortune, and a feeling of infinite depression and sadness came to his mind. Vast and empty, vast wilderness, wronged in the chest, how can you complain! Thought of here, mixed feelings, "tears alone." Poetry has great boldness of vision, vertical and horizontal language, and the wind of the ancients. This article is also excellent in artistic expression. The last two sentences are long in writing; The third sentence is to climb the building and overlook, and the writing space is vast. In a broad background, the fourth sentence describes the poet's feelings of loneliness, loneliness, sadness and depression, which reflect each other and are particularly touching. Reading this poem, we will deeply feel a desolate and tragic atmosphere. It's as if a vast and broad picture of the Northern Yuan Dynasty appeared in front of us, and in front of this picture stands the image of a poet. He is ambitious, but he feels lonely and sad because he can't serve his country, so he is deeply excited.