" Unintentional rubbing of willows makes shade " was not a complete poem, but a line from the Tang Dynasty poet Bai Juyi's " Farewell to the ancient grass." The whole poem is: "The grass on the plain withers and thrives for a year. The wildfire never ends, and the spring breeze blows, it grows again. The far-off fragrance encroaches on the ancient road, the clear green connecting the deserted city. And send the prince to the lush garden to bid farewell." This poem used the natural scenery as the background to express the feelings of separation and the impermanence and flow of life. Although the poem 'unintentionally rubbing the willows makes a shade' was not a complete poem, the mood and emotions it expressed were full of poetry and philosophy, making it one of the classic lines in Chinese literature. In terms of literary works, the poem " unintentionally rubbing willows makes shade " did not come from a literary work but became a common online phrase. Because of its concise and beautiful language style, as well as the poetic and emotional resonance it brought, it was widely circulated on the Internet and used by many literary lovers to express their love and praise for literary works.