This poem used a contrasting rhetorical device. By comparing the drunken lying on the battlefield and returning from the battle, it shows that the warriors on the battlefield are exhausted but still full of spirit when they return for the country and honor. This tenacious vitality and strong will are worth learning and praising. At the same time, this sentence also reflects the changes in history and the cruelty of war, reminding us to cherish peace and love life.