Taking "Farewell to the Grass in Guyuan, Fude" as an example, it can be regarded as either an object-chanting poem or an allegorical poem. Some people think it's a mockery of the villain. Judging from the whole poem, although the original grass refers to something, its metaphorical meaning is uncertain. The first four sentences are mainly cursive, which means unified writing, while the last four sentences turn to different writing. The smell of parting between the ancient road and the deserted city in the dazzling green makes the grassland full of parting symbols. "Wildfire never completely burned them, and the spring breeze blows high." However, as a kind of "tenacity", it is well known and has become a swan song that has been passed down through the ages.