The article adopts the method of positive and negative comparative argument, which is very convincing. Before he died, the King of Jin gave Zhuang Zong an order, telling him that he hoped Zhuang Zong would live up to his old feud and fulfill his last wish. Zhuang Zong shoulders a heavy responsibility for fear of failing to live up to the entrustment of his ancestors. He took the lead in the war, and finally won one game and another, winning a total victory. However, after his success, he changed his original intention, favoring actors and seeking pleasure, so that his political affairs were abandoned and declined. The author compares Zhuang Zong's successful scene with his tragic scene of "shuddering" and "sobbing" when he was defeated, highlighting the root of Zhuang Zong's historical tragedy, and draws the conclusion that success or failure is due to people, which is convincing and thought-provoking. Among them, in the process of discussion, the author constantly puts forward warning judgments, such as "Worry and fatigue can rejuvenate the country, leisure can replenish the body", "disasters often accumulate little, wisdom and courage are sleepy", and quotes the famous saying in Shangshu that "full is loss, modesty is gain" to confirm the central argument. Two questions: "Is it hard to get and easy to lose?" What is even more thought-provoking is that "it is precisely because of people that success or failure is suppressed." It is difficult to deny the first sentence with rhetorical questions, and the second sentence uses the word "from people", which is different from the beginning "Isn't it a person?" At this point, the author has not only started writing, but also quoted the old saying, further tracing back to the source, clearly pointing out the natural principle that "worry and fatigue can rejuvenate the country and leisure can die", further strengthening the argument.