Mourning a maple tree: this poem can be said to be implicit in emotional expression. The feelings contained in the poem are profound and painful, but they are restrained in performance. Emotionally, the poet hates the evil forces that destroy maple trees, but he can't find a word of condemnation throughout. However, the poet's grief and condemnation pervades between the lines of poetry, which has an effect that silence is better than sound. This effect is also attributed to the poet's exploration of the inner life of the maple tree-the more fully the poet shows the inner life of the maple tree, the more he can infect the readers, and the greater the power of this condemnation. Formally speaking, this is a free-form poem, the number of lines in each section ranges from one to nine, the number of words in each line is also different, and there is no fixed rhyme format. But the whole poem has a musical effect of reciprocating, singing and sighing.