" Green " was a poem written by Bai Juyi, a poet of the Tang Dynasty. It mainly described the flourishing vegetation in spring, the scene of vitality, and the author's praise for nature. The entire poem has a total of six sentences, each of which is seven words. The writing is concise and the rhythm is smooth. Through vivid descriptions, it shows the beauty and vitality of nature. The famous phrase "The green mountains cannot be hidden, after all, the east flows away" expressed the author's feelings and reverence for the ever-changing nature. From the content and form of the poem, Green expressed the author's deep feelings and reverence for nature, as well as the cherish of life and hope for the future.