Of course, we can't avoid the final result of history, and we can't help but admit that Xiang Yu didn't see through Liu Bang's ambition in time, but we can't blame Xiang Yu for releasing Liu Hongmen, and we can't think that releasing Liu Hongmen is a short-sighted performance. Looking at Xiang Yu's biography, we can't see that Xiang Yu is a simple-minded person politically. On the contrary, he is insightful on many issues. Look at what he said before he killed him: "We will attack the State of Qin with all our strength, but we can't hold on for long. At this age, the hungry people are poor, the foot soldiers eat taro, and the army has no food. It is a high meeting for drinking. Not to lead troops across the river with Zhao Zhili's grain, but to attack Qin with Zhao Zhili, is "bearing its disadvantages." "Husband with the power of the qin dynasty to attack the newly created zhao, is bound to raise zhao. Zhao Ju and Qiang Qin, our promise! Moreover, the national army is newly broken, the king is restless, sweeping the territory, belonging exclusively to the general, which is related to national security. Today, I am not selfish for soldiers, nor a minister of the country. " A Yu Can can't break Liu Bang, which can only prove that Liu Bang's camouflage skills are excellent, his forgery skills are superb, and his lying skills are superb. How can Xiang Yu resist such a "three highs" political hooligan? As historians have pointed out, the dispute between Chu and Han is actually "the dispute between the fox and the lion, and the dispute between the villain and the gentleman" (see China Civilization History by Qi Liang, Huacheng Press, 200 1 edition). This reminds us of a famous episode in the Romance of the Three Kingdoms-cooking wine on heroes. In fact, Cao Cao is testing whether Liu Bei has the ambition and ability to be king, and Liu Bei knows Cao Cao's scheming well and handles it carefully. When Cao Cao said that the heroes in the world were "only you and Gu Er", Liu Bei was so scared that even his chopsticks fell to the ground. Fortunately, a thunder helped Liu Bei a lot and fooled Cao Cao. Cao Cao thought that even a person who was afraid of thunder could not become a climate, relaxed the supervision of Liu Bei and let Liu Bei escape. What kind of character is Cao Cao? He is the best in the world, and it is inevitable to be cheated, let alone others. Looking at Liu Bang's despicable performances in Historical Records, we can see that his hypocrisy and treachery are not inferior to Liu Bei, but comparable to Cao Cao, who is not a political strategist of Xiang Yu. Therefore, it is not beyond Xiang Yu's power to see through Liu Bang's political ambitions at the Hongmen banquet. If we connect with the tragedy of Han Xin, we can prove this point even more. According to Records of the Historian Biography of Huaiyin Hou, after Han Xin defeated Longyi, Xiang Yu once sent a military attache to persuade Han Xin: "Hanwang doesn't have to be in the hands of Xiang Wang. Xiang Wang lived a miserable life, and then he had to take off, and he won many battles and hit Xiang Wang again. This is not credible. Although the first step was to be intimate friends with Hanwang, I tried my best to fight for it and was finally captured by it. The first step is that the king is still alive today. " It can be said that these words show that after experiencing a painful lesson, Xiang Yu thoroughly recognized Liu Bang's true face and saw his lofty aspirations. It's a pity that a clever man like Han Xin was confused by Liu Bang's hypocrisy. After Kuai Tong's incisive analysis, he still insisted: "Hanwang met me very thick, took me with his car, dressed me with his clothes, and ate me with him." He rejected Kuai Tong's suggestion, because he thought he had done more work and all three families had been slaughtered.