The poet "thousands of miles of birds singing green and reflecting red" opened his eyes from the spring scenery in front of him and imagined the whole land of Jiangnan. Thousands of miles south of the Yangtze River, singing and dancing everywhere, pink and green, a scene full of spring. In writing, the poet first used the technique of contrast, matching "red flowers" with "green leaves" and using the word "ying" to highlight the colorful scene of "spring scenery in the south of the Yangtze River" from a perspective.
At the same time, the poet also showed the lively scene of singing and dancing in Jiangnan in spring from the perspective of sound and hearing. The "a thousand miles" in the poem is wonderful and weighty, which not only expands the aesthetic realm of the poem in space, but also lays the foundation for the later description.