Zhuan Xu writes about birds and looks up. The warbler is singing and the swallow is dancing, showing the vitality of spring. Both the oriole and the swallow are messengers of spring. With its fluent voice, the oriole spreads the good news of spring returning to the earth to the world. Swallows wear flowers and build nests with mud, which encourages people to start working in spring. The word "several places" sums up the attraction of Ying Ge and the poet's pattern of finding sounds around him. The doubt about the word "whose home" also shows the poet's delicate psychological activities, which makes readers have rich associations. Using "early" to describe oriole reflects Bai Juyi's sincere love for these vibrant little lives. It makes people feel that spring is rare and precious. Using a word "peck" to describe the busy and excited expression of the swallow seems to make the swallow alive. These two sentences deliberately describe the dynamics of Yingying Yanyan, thus making the whole poem full of vitality and vitality in spring.