Writing flowers and plants in neck couplets focuses on the poet's feelings. The horse walked briskly on the shallow grass and looked at the flowers for a long time. His eyes were full of colorful flowers, which made people dizzying and puzzled. This pair of couplets and the first pair of couplets are the core of this poem, and they are also the crowning touch to describe the spring scenery in the white poem, especially the spring scenery in the West Lake. This is an emotional and energetic description of the scenery, which fully shows Bai Juyi's careful observation of the object of description and accurate grasp of its characteristics.