(2) The first four sentences use fictitious writing to depict a desolate and dilapidated scene of the ancient capital Chang'an in the distant imagination: overgrown with weeds, infested by wild geese, and the palace crows are still crows. From the very beginning of the poem, there is a melancholy and desolate atmosphere, expressing the author's incomparable sorrow for the demise of his family and country. (3) The first four sentences use the method of blending scenes and complementing the virtual and the real to imply the changes in the political situation and express the inner feelings of vicissitudes; in the fifth and sixth sentences, the word "empty" and the word "must" are even more powerful and powerful. , expresses the strong indignation and helplessness in the poet's heart; the last two sentences borrow allusions to use Zheng Xiu's anger to expose Zhu Wen's conspiracy to take over the world, and use Feng Huan's own words to express his deep lamentation of being helpless. The emotions are intense and the sadness is overwhelming, but there is an air of depression and injustice, which is ups and downs and shocking.