You can't see anyone entering the pool, but you can only feel someone coming when you hear the song. The word "chaos" makes the whole picture full of interest. The center of this painting is naturally the girls picking lotus, but the author never lets them "reveal their true colors in Lushan" from beginning to end, but lets them blend in with the fields of lotus leaves and the beautiful scenery. Among the lotus flowers, they are looming and invisible, giving the whole poem a unique and beautiful artistic conception that attracts people's imagination, leaving endless leisurely and interesting meaning.