"Dung" is used as a verb here. Xunzi? 6? 1 Powerful country: "If there is no dung in the class, the grass in the countryside will not be broad." It is said that if you haven't cleaned the class, you can't see whether there is grass in the countryside. The word "earth" in Mao Ci means to sweep away dirt. "At that time, the soil belonged to Wan Huhou", which means that "Wan Huhou" should be treated like soil. This is a comprehensive application of rhetorical metaphor and grammatical ellipsis (referring to "handling"). Dung is a key verb in the sentence. Explained in this way, the "dirty" sentence not only contains opinions, but also fully shows the actions and behaviors of revolutionary youth. This can better reflect the slogan and historical background of "down with warlords and bureaucrats" at that time.