At the end of Qin Dynasty, Liu Bang and Xiang Yu attacked Qin Jun respectively. Liu bang first defeated Xianyang (the capital of Qin Shihuang), but Liu bang's troops were not as good as Xiang Yu's. Xiang Yu was furious and sent Dangyang Army to tackle key problems. After Xiang Yu entered Xianyang, he arrived in the west of the war zone, while Liu Bang was stationed in hegemony. Liu Bang's Sajima Cao Wushang sent someone to tell Xiang Yu that Liu Bang was going to be king in Guanzhong. Xiang Yu was even more angry after hearing this, and ordered the soldiers to have a hearty meal the next morning to defeat Liu Bang's army. A fierce battle is coming. Liu Bang was surprised to learn this from Xiang Bo, the father of Xiang Yu's Jishi family. Liu Bang respectfully offered a glass of wine with his hands, wishing Xiang Bo a long and healthy life, and made an appointment with his in-laws. Liu Bang's affection wooed Xiang Bo, and Xiang Bo promised to intercede in front of Xiang Yu, and asked Liu Bang to thank Xiang Yu the next day. At the Hongmen banquet, although there is no lack of food and wine, there are also hidden dangers. Xiang Yu's father, Fan Zeng, has always advocated killing Liu Bang. At the banquet, he repeatedly motioned for Xiang Yu to start, but Xiang Yu hesitated and silently refused. Fan Zengzhao invited Xiangzhuang to dance the sword for a banquet and took the opportunity to kill Liu Bang. In order to protect Liu Bang, Xiang Bo also protected Liu Bang with a sword. At this critical juncture, Fan Kuai, a subordinate of Liu Bang, broke into the military gate with a sword and shield and glared at Xiang Yu. Xiang Yu saw that this person was distinguished, so he had to ask who the visitor was. When he learned that he was a participant of Liu Bang, he was ordered to give wine, and Fan Kuai immediately drank it. Xiang Yu gave a pig leg and asked him if he could drink any more. Fan Kuai also took the opportunity to speak well of Liu Bang. Xiang Yu was speechless, and Liu Bang took the opportunity to walk away. Sean, a subordinate of Liu Bang, said that Liu Bang was drunk and could not come to see him off. Now I present a pair of white walls to the king and a pair of jade buckets to the general (father Fan Zeng). Please accept it. I don't know how deep Xiang Yu accepted the white wall, but I was so angry that Fan Zeng smashed the jade bucket with his sword. Later generations called the Hongmen Banquet a hidden danger.