The source is Historical Records Biography of Huaiyin Hou written by Sima Qian of Han Dynasty.
In 203 BC, Han Xin, the general of Emperor Gaozu Liu Bang, led an army to annihilate Qi and sent someone to ask Liu Bang, "Qi is a capricious country. If we don't temporarily set up a king to suppress it, the situation will definitely be unstable. I hope that I can temporarily replace Wang Qi, which is more conducive to stabilizing the current situation. "
At that time, Liu Bang was besieged by Xiang Yu in Xingyang and was at a disadvantage, so he had to agree that Han Xin should be the king of Qi.
Kuai Tong, the counselor of Han Xin, after analyzing the general trend of the world, thinks that Han Xin is a pivotal figure. He said to Han Xin: "A person's dignity depends on the shape of bones; Mixed feelings, look at the expression on your face; Success or failure depends on his temperament and ability to decide major events. Look at the situation with these three to ensure that nothing is lost. " Han Xin invited him to see a photo. Kuai Tong looked at Han Xin for a long time, then asked Han Xin to turn around, thought for a moment and said, "Your face will not be the tallest in the future, and your life will be in danger;" From behind you, the future is expensive. "
Han Xin felt incomprehensible.
Kuai Tong said, "The dispute between Chu and Han has been going on for a long time, and the people hate it. Mediocre and incompetent people can never quell this war. Help Hanwang win the world, but don't seal it in the future. If you betray Hanwang to stand on your own feet, you can share the world with Chu and Han. In this way, Liu Hexian did not dare to start work first. With your own talent, you stopped the dispute between Chu and Han and complied with the people's hearts. Who won't thank you for your kindness? The princes of the world will certainly obey. Don't miss the golden opportunity, or you will suffer in the future if you help Liu Bang now. I hope you think twice! "
Han Xin listened to Kuai Tong's words and was in a dilemma. Finally, he decided not to betray Liu Bang and fell into the name of injustice. Later, Han Xin forced Xiang Yu to commit suicide in Wujiang River with the tactics of "besieged on all sides", and Liu Bang won the world. Han Xin was named Huaiyin Hou, but Liu Bang always suspected that he would rebel. When Kuai Tong's words reached his ears, he took advantage of Han Xin's unprepared and let Lv Hou trap him.