"Hearing is empty, seeing is believing." This "dedication" comes from Zhao Chongguo, an old general when Emperor Wu of the Han Dynasty proclaimed the Emperor. According to legend, when Xuan Di, Emperor Gaozu, proclaimed himself emperor, there was an incident on the northwest border, saying that Qiang people often harassed, besieged the city and killed officials, and the situation was very serious. When the court received the report, it immediately convened a meeting to discuss countermeasures. Ministers all advocate sending troops to attack and suppress immediately. But when Xuan Di asked who could lead the army, he was silent and no one dared to speak. At this time, the old general Zhao Chongguo volunteered to visit the Northwest Border Region. Xuan Di was so happy that he had to praise him and said to him, "According to your estimation, how strong the Qiang people are and how many troops, weapons and food they need, just ask." Zhao Chongguo said: "It is not clear what the situation is at present, so it is not convenient to estimate, let alone make any demands. Hearing is false, seeing is believing. I asked to have a look in person. When I get there, I will find out the situation, then draw up a general plan and report to you in detail. " Zhao Chongguo came to Jincheng County, northwest Gansu Province, to conduct on-the-spot investigation and study, and crossed the Yellow River to scout the Qiang area. He learned about the relationship between the leaders of Qiang ministries and so on from the prisoners, so he made a plan to station troops. Advocating the policy of dividing and disintegrating the Qiang people and striving for reconciliation instead of cracking down on repression is called "the policy of total annihilation", and Zhao Chongguo reported this to Xuan Di, the Emperor of the Han Dynasty. However, after listening to the contrary opinions of North Korean ministers, Xuan Di still advocated invasion and repression. Zhao Chongguo analyzed the actual situation many times, and advocated that "when you leave the wasteland, you will get twelve" instead of sending troops. The reason for sending troops lost twelve benefits. Zhao Chongguo repeatedly reported, Xuan Di and ministers repeatedly discussed, and finally agreed to Zhao Chongguo's plan. After the implementation of this scheme, the effect is really good, that is, it saves the expenses of the court, avoids the bloody conflict of soldiers, and immediately quells the tension between Han and Qiang, killing two birds with one stone.