The original intention is that the layers of trees on the mountain turn red after frost, like dyed, from the sentence in the poem "Qinyuanchun Changsha"; Therefore, the forest is full of dyes, not describing the weather, but describing the arrival of autumn. Of course, it can also describe the scene of harvest. Autumn is the season of harvest.

Poetry is a literary genre that expresses feelings and aspirations. It is a literary genre with a certain rhythm and rhythm, which vividly expresses the author's rich emotions in highly concise language and reflects social life intensively. "Preface to Mao Poems" records: "A poet has a place of ambition. Be ambitious in your heart and speak as a poem. "

Yan Yu's Poems on Canglang in the Southern Song Dynasty says, "Poets chant temperament". There is only one art expressed in words: poetry.