How practical is The Book of Songs?

From the writing point of view, like many works in The Book of Songs, it uses the method of stimulating interest. In addition, it is repeated in composition and morphology, which makes the content and interest spread layer by layer and gradually deepen, and also enhances the musical beauty and rhythm of the works. The whole poem has narration, discussion, scenery, lyricism and psychological description, which is well arranged and appropriate. The emotional theme that runs through the whole poem is the sadness of homesickness. Throughout the poem, the typical significance of the dominant emotion is not to express the feelings of sending troops to fight, but to separate individuals from the battlefield under the background of the war conflict between the retreating dynasty and barbarians, expressing the inner world of the defenders who have been defending for a long time and are worried about their way home, thus showing Zhou people's disgust and disgust at war. Cai Wei seems to be the originator of war-weary poems throughout the ages.