The Book of Songs-What expressive techniques did Xiaoya use in Why Grass Is Not Yellow?

why grass is not yellow is an anti-war poem that accuses the ruling class of the militaristic and predatory unjust war. The poet used rhetorical questions many times in a lyrical way in the third person, crying out the pain and resentment of the military service. At the same time, it really reveals the tragic experience that everyone is forced to be a soldier, driven to March and fight around the clock, and attacked from all sides. It won't be long before they will wither and wither like grass. The poet compares soldiers with bison, tigers and other beasts by means of side contrast, which shows that they are not treated as human beings and their fate is worse than that of wild animals. Animals still have the life and opportunity to hibernate and rest, while those who serve in military service become slaves inferior to animals. It can be imagined that they are far away from home, have no fixed place to live, are cut off from their relatives, can't support their parents, suffer from hunger and thirst, and live an inhuman life. In the fourth quarter of "What Grass Is Not Yellow", it is expressed in an implicit metaphor, saying that when the fox gets into the dense grass to rest, the soldiers still drive forward. According to ancient legend, when a fox dies, he must lay his head on a small mound to show that he is attached to his native land until he dies and always remembers his birthplace. There are two sentences at the end of Qu Yuan's "Nine Chapters of Mourning": "Birds fly against their hometown, and foxes will die first." That's what it means. The fourth section of "What grass is not yellow" also makes people have many associations, such as: "The fox may die in the native land where he was born, but the soldiers don't know where he will be buried." "When soldiers see foxes in the March, they will naturally arouse deep homesickness." "Why is the fate of soldiers not as good as that of foxes?" And so on, the whole poem does not explain the final outcome of the soldiers, whether they died in the battlefield, whether they returned to their hometown to reunite with their relatives, leaving readers a lot of room for imagination and thinking, and achieving an artistic effect of poetry.