What is the poem written by two birds singing in the trees?

In Du Fu's quatrains, two orioles sing green willows. Or is it the ending of Du Fu's "The Sixth Collection of Flowers Alone by the Riverside"

The whole poem of Free Jiao Ying Cha Chati is as follows.

Four yellow maiden flowers thrive on the road covered, and thousands of flowers bow and the branches are low.

The butterflies in the flowers are dancing, and the soft yinger in freedom is just singing happily.

Because the last article has explained that "flowers are low" is in a tree, and just singing is obviously singing, so this sentence can better reflect your understanding and familiarity with poetry. Pure hands, hope to adopt, welcome to ask, know everything.