The poem is from Gong Zizhen's Five Miscellaneous Poems of Ji Hai. "Falling red" originally refers to the flowers blooming on the branches, but it is not something without feelings. Even if it turns into spring mud, it is willing to cultivate beautiful spring flowers to grow. Not for the unique fragrance, but to protect the flowers. It shows that although the poet is divorced from officialdom, he still cares about the fate of the country and never forgets his ambition to serve the country, so as to express his enthusiasm for caring for the country until his death. Fully express the poet's strong feelings and become a famous sentence handed down from generation to generation.