Li Bai's " Dongting Lake Tour " was a lyrical poem that described the author's feelings and feelings in Dongting Lake. The poem used Dongting Lake as the background to describe the beautiful scenery of the lake and the mountains and rivers. The first line," The water of Dongting Lake is as clear as ever ", expressed the clear and bright characteristics of Dongting Lake in simple and beautiful language. The following line," The green mountains are still several degrees red at sunset ", expressed the flow of time and the eternal charm of nature through the continuous changes of scenery. The poem also used a large number of rhetorical devices such as metaphor, personification, antithesis and so on to enhance the performance and artistic appeal of the poem. For example, the metaphor of " There is a family in Baiyunsheng, and the water flows down 3,000 feet " vividly presents the landscape around Dongting Lake to the readers, and the antithesis of " The fishing boat sings at night on the shore of Pengli " makes the rhythm of the whole poem more beautiful. Li Bai's " Dongting Lake Tour ", through concise and beautiful language, rich rhetoric and vivid description, shows the beauty and natural scenery of Dongting Lake. It also shows the author's praise and emotion for nature. It is a classic lyric.