The focus of this poem is not to write the feelings of parting, but mainly to express the feelings and grievances that one's ideals and ambitions cannot be realized. The whole poem is gloomy and unrestrained, and almost every sentence is the essence, which is one of the representative works of Li Bai's poetry. This poem aims to compare Penglai's articles with Liu Yun's, and express itself with Xie Qing. Say goodbye to praise each other, but cherish your life. Open the first two sentences, don't write farewell, don't write buildings, but express your own anguish and worries. Three or four sentences suddenly make a turning point, from depression to hearty grandeur, and a picture of sending geese in autumn unfolds. A "farewell" and a "sound" point out the theme of "farewell". "Penglai" four sentences, mutual praise articles, such as Penglai Palace, quiet and vigorous, with the spirit of Jian 'an. He also showed his talent and expressed his pursuit of lofty ideals by thanking himself. At the same time, it also shows the poet's view of literature and art. The last four sentences express the irreconcilable feelings between ideal and reality, which inevitably leads to anxiety and depression, so he has to seek sustenance in "boating". Thoughts and feelings change rapidly, and the artistic structure is ups and downs. The ups and downs, for no reason, are intermittent, which profoundly shows the poet's contradictory mood. Language is bold and natural, and melody is harmonious and unified. However, since the water is still flowing, although we cut it with the sword, we return with sorrow and joy, but we drown it with wine. This bold language and harmonious melody is the most wonderful sentence in the poem, which profoundly shows the irreconcilable contradiction between the poet's ideal and reality, and is also a famous sentence describing melancholy for thousands of years. I hope to be free from water, but the past days are like running water and I can't get rid of them. Therefore, the poet can only raise a glass to dispel his worries and cannot extricate himself from the growing worries. It best describes the poet's depression, anger and confusion at that time.