The riverside expresses the purpose of creation.

I wrote it to publicize my poetic talent, the main purpose is to show my deep love for my hometown, and also to express my helplessness in life experience adversity and my feelings of missing my hometown. In his poems, Bai Juyi not only wrote the beautiful natural scenery on both sides of the Yangtze River, but also expressed his love for rural life and the natural world, so as to emphasize his pastoral feelings and pursuit of poetry. Therefore, it can be said that the creation purpose of "Expressing My Feelings by the River" is to express the author's feelings and emotional needs through scenery, and also to show his poetic talent.