When Liu Bang's army entered Xianyang, they saw luxurious palaces, beautiful maids and a large number of treasures and foreign objects, which made many people get carried away and thought that they could enjoy the world. Even Liu Bang couldn't help being dumped by everything in Qin Gong and wanted to stay in the palace. Military commander Fan Kuai risked his life to make Yan Qiang protest, accusing Liu Bang of being a "rich man". However, Liu Bang simply ignored it. Some of his smart people are worried about this. At this critical moment, Sean analyzed Liu Bang's interests and advised: "The King of Qin has done more unjust things, so you can overthrow him and enter Xianyang. Since the scourge has been eradicated for the whole world, we should be vegetarian to show frugality. Now that the army has just arrived in the state of Qin, you are addicted to pleasure, which is the so-called aiding and abetting. As the saying goes, good medicine tastes bitter and is good for illness, but advice when most unpleasant is good for action. I hope that Pei Gong will listen to Fan Kuai and others. " Sean's tone is calm, but there is rigidity in softness, especially the revelation of success or failure in ancient and modern times and harsh words such as "immoral" and "aiding and abetting", which vaguely hurt Liu Bang's almost intoxicated heart. This technique of playing tight and singing slowly really worked. Liu bang readily accepted this far-sighted robbery, ordered the seizure of Qin's treasures, treasuries and property, and also seized the army to rectify the army, waiting for Xiang Yu and other rebels. During this period, Liu Bang also adopted Sean's suggestion, summoned the heroes from all counties, and concluded three chapters with them: "The murderer dies, the injured are injured, and the robber robs" and told the four parties: "I already know about the Qin law. All the officials are safe. If I am here, don't be afraid, because I am not aggressive. " In addition, people were sent to tour all parts of the country with Qin collectors to inform the matter. As a result, it won the unanimous support of Qin Min, scrambling to comfort the sergeant with cattle and sheep. Seeing this, Liu Bang ordered the sergeant not to accept it, and sent a message: "There is enough food in the army, so don't waste money." Hearing this, the people of Qin became more and more happy, fearing that Liu Bang would not be the king of Qin.

Liu Bang adopted Sean's suggestion and adopted a series of measures to appease the people's hearts, which won the people's hearts and laid a good political foundation for him to govern Guanzhong in the future and take it as a base to compete with Xiang Yu for the world.

In February 206 BC, Xiang Yu led the vassal soldiers to Hanguguan (now northeast of Lingbao, Henan). Liu bang ordered the defenders to close the door and not let the vassal soldiers enter the customs. Xiang Yu was very angry when he learned that Liu Bang had captured Xianyang. He just caught up with Liu Bang's subordinate Cao Wushang and said to Xiang Yu, "Pei Gong wants to be king in Guanzhong." Xiang Yu immediately ordered Ying Bu overseers to storm. In the same year1February, Xiang Yu's army broke through Hangu Pass and entered Xinfeng and Hong Men (now northeast of Shaanxi Linjian) to fight to the death with Liu Bang.

Thanks to Xiang Yu's uncles Xiang Bo and Zhang. On the eve of Xiang Yu's decision to attack Liu Bang, Xiang Bo rode quietly to Liu Bang's army, met Sean privately, told Sean the news and invited him to abscond together. Sean said, "I was ordered by korean king to send Pei Gong to the pass. Now that Pei Gong is in danger, it is immoral for me to run away quietly. I must say goodbye to him before I leave. " Sean immediately came to Liu Bang's camp and told Liu Bang what Xiang Bo said in detail. Liu Bang was surprised and asked Sean, "What should I do?" Sean did not answer directly, but asked Liu Bang, "Do you think our army can resist Xiang Yu's attack?" Liu Bang said weakly, "I really can't. But what can we do now? " Zhang believes that it is imperative to dispel Xiang Yu's doubts about Liu Bang and make him give up his plan to attack Liu Bang. And to achieve this goal, Xiang Bo is a key figure. Judging the situation, Sean gave Liu a radical idea: "Please tell Xiang Bo that you dare not betray Wang Xiang." Liu Bang asked, "Who is older, Xiang Bo or you?" Sean said, "How old is Xiang Bo?" So Liu Bang said to Sean, "Please invite Xiang Bo in for me, and I will treat him like a brother." Sean went out and repeatedly invited Xiang Bo to enter an item in an account to see Liu Bang. After Xiang Bo entered the account, Liu Bang personally poured wine for Xiang Bo's birthday and married his children's in-laws. When Xiang Bo was drunk, Liu Bang said with grievance: "After I was imprisoned, Qiu didn't commit any crime. All the officials and people kept account books, and the property in the treasury was strictly sealed and waited for the general to receive it. The reason why soldiers were sent to guard Hangu Pass was to prevent other thieves from breaking in and guard against extraordinary changes. I am here, looking forward to the arrival of General Xiang day and night. How dare I resist? Please convey my heart to the general. I will never betray the virtue of the general. " After a word, Xiang Bo believed it and told Liu Bang: "You must come to Xiang Yu personally to apologize tomorrow morning." Xiang Bo rushed back to Hong Men overnight, told Xiang Yu what Liu Bang had said, and tried every means to ease the already tense situation.

It is imperative to go to Hong Men; Liu bang knew that going here was like being a guest at the gate of hell, full of danger, but he couldn't help going. It's really a dilemma. Knowing ourselves and ourselves, Sean brilliantly analyzed Xiang Yu to Liu Bang, determined to go deep into the den and protect Liu Bang's safety cautiously and flexibly.

The next day, Liu Bang only brought hundreds of people, including Sean and Fan Kuai, to Chuying. When Liu Bang saw Xiang Yu, he quickly stepped forward and said, "The minister and the general joined hands to attack Qin, the general attacked Hebei, and I attacked Henan. Unexpectedly, I am very lucky. My ancestors broke the Qin Dynasty, and I can see the general here again. Today, a villain has entered the DPRK, and the general has a grudge against me. " Xiang Yu saw that Liu Bang only brought 100 people to dinner with him, and he looked humble and wronged. He couldn't help but be soft-hearted and blurted out: "This is all told by Cao Wushang of Sashima. He is an official who has been repeatedly bribed. Say you want to be king in Guanzhong and make the son opposite. Otherwise, why am I like this? " Liu Bang's preconceived ideas tried to overwhelm each other mentally. Xiang Yu knew that Liu Bang had made an agreement with the king of Chu, and it was not too much to enter the customs first. He was suspected of violating the agreement with Liu Bang, and he felt a little unreasonable.

Xiang Yu left Liu Bang to drink. During the dinner, Fan Zeng, the adviser of Xiang Yu, repeatedly raised his eyes to signal Xiang Yu, and repeatedly raised the Yu Pei he was wearing, suggesting that he would make a quick decision and kill Liu Bang. Xiang Yu hesitated, but silently should not. Fan Zeng had to call the samurai Xiang Zhuang from outside the tent and instruct him to make swords and knives, waiting for an opportunity to kill Liu Bang. Xiang Bo saw the flaw, drew his sword and danced, always protecting Liu Bang with his own body. Sean saw that things were not good, so he quickly got up and went out to find Fan Kuai and ordered him to escort him as soon as possible. Without further ado, Fan Kuai broke into the military gate with a sword and shield, and went straight to the outside of the account. His eyes glared at Xiang Yu and his hair stood on end, which was great courage. Xiang Yu was surprised and asked, "Who is this?" Sean replied: "It's Pei Gong's bodyguard Fan Kuai." Xiang Yu said, "A hero, give him wine!" The left and right attendants were holding a large glass of wine, and Fan Kuai stood and gulped it down. Then he advised him to drink, and criticized Xiang Yu by using the topic: "I will not avoid death, and I will do what I say!" Then, he sternly stated Liu Bang's efforts and loyalty, accusing Xiang Yu of being too suspicious. Xiang Yu was shocked by his impassioned words for an instant and was speechless. He just called Fan Kuai, "Sit down!" Fan Kuai returned to Sean and sat down. After a while, Liu Bang saw that things were getting better. He used the excuse of going to the toilet and asked Fan Kuai to pay the bill. Sean came out. Three people to discuss the countermeasures, decided by Fan Kuai to protect liu bang, Sean to stay and deal with the situation.

Besides, Liu Bang left his car to ride, and under the escort of four generals, such as Fan Kuai, he rode lightly over Mount Li, crossed Zhiyang, took a shortcut, took French leave, and secretly returned to Bashang. Sean, who lives in his study, calmly deals with Xiang Yu and others. At this time, he estimated that Liu Bang had returned to the army, so he entered the account of politely declining and said, "Repeatedly, you can't retreat if you are drunk. May A let Zhang Liang present a pair of white jade and give the first step to the king; Prepare another pair of jade barrels to present General Fan's feet. " Xiang Yu had no choice but to accept Bai Bi and let it go. Fan Zeng was so angry that he threw the jade bucket on the ground, pulled out his sword and smashed it to pieces. He said angrily, "Alas! Shortcomings and strategies of vertical columns (a disparaging term for Xiang Yu, etc. ). The winner of the title of Xiang Wang must be Pei Gong, and we will be his prisoner! "

In this life-and-death struggle, Sean, with his great wisdom and courage, not only skillfully helped Liu Bang escape from the jaws of death, but also buried the bane of the estrangement between monarch and minister in Xiang Yu.

Edit this paragraph (4) Open the plank road and sneak into the warehouse.

In the first month of the first year of Han Dynasty (206 BC), Xiang Yu dominated the city and became the overlord of Western Chu, with Pengcheng (now Xuzhou, Jiangsu Province) as its capital, and governed the nine counties of Liangchu. He "calculated to cede territory" and enfeoffed 18 princes. Contrary to Chu Huaiwang's stipulation that "whoever tackled the problem first is the king of Guanzhong", Liu Bang was enfeoffed to the remote and desolate Bashu, known as Hanwang in history. The actual land was divided into three parts and given to the three generals of Qin to curb Liu Bang's northward movement. Liu Bang was disgusted and wanted to lead an army to attack Xiang Yu. After Xiao He and Sean dissuaded him many times, he decided not to send it for the time being.

The enfeoffment system in the world has been decided, and Sean intends to leave Liu Bang and return to South Korea to work for Han Wangcheng. Liu Bang gave one hundred gold medals and two pearls. So Sean gave all the golden beads to Xiang Bo and asked him to make Hanzhong Hanwang. Xiang Bo cynical, immediately to persuade xiang yu. In this way, Liu Bang established Nanzheng (now the northeast of Nanzheng County, Shaanxi Province) as his capital, occupying the land of Ba, Shu and Hanzhong counties south of Qinling Mountains.

In July of the same year, Sean sent Liu Bang to Baozhong (now Baocheng, Shaanxi Province). Surrounded by mountains, there are cliffs along the way, and there is only a plank road overhead for pedestrians to pass, so there is no other way. Sean observed the terrain and suggested that Liu Bang burn all the plank roads that entered Shu after the Han army, indicating that he had no intention of looking east, so as to eliminate Xiang Yu's suspicion and guard against other people's attacks. In this way, you can take the opportunity to save your strength, wait for the opportunity, and then make great achievements. According to the plan, Liu Bang burned the plank road along the way. Sean's plan was well-intentioned, which made an important guarantee for Liu Bang's consolidation and development as well as his eastward advancement in the future. After Liu bang was appointed as Hanzhong, he made great efforts to rest. In August of the same year, Liu Bang used general Han Xin's stratagem to avoid the frontal defense of Wang Yong and Zhang Han, and took the opportunity to "sneak into Chencang" from the old road (now Baoji, Shaanxi), and unexpectedly defeated Wang Yong Zhang Han, Wang Sai Sima Xin and Zhai Wangdongkun from the side, so as to pacify Sanqin in one fell swoop and seize the treasure of Guanzhong. With a brief plan of three qins, Liu Bang can compete with Xiang Yu in Guanzhong area, which won by virtue of wealth. A "burning in the open" and a "crossing in the dark", Zhang and Han joined hands and made a perfect match, which became a much-told story in history.

Xiang Yu was furious when he heard that Liu Bang had pacified Sanqin, and decided to lead the troops to fight back. Sean had expected this for a long time, so he sent a book to deceive Xiang Yu, claiming: "Hanwang is not worthy of the name and wants to get Guanzhong; As scheduled, I dare not move eastward. " At the same time, Sean also told Xiang Yu about the rebellion of Tian Rong, the king of Qi, saying that "Qi wants to destroy Chu with his soldiers, and it is inevitable to guard against the current situation." It is intended to attract the attention of the Chu army to the east. Xiang Yu was really caught, but he ignored the west and turned to the north to crack down on the lifeless decadent forces in Sanqi. Sean's letter strengthened the effect of "publicly burning the plank road" from the side, and drew Xiang Yu's attention to the east, thus relaxing the defense against Guanzhong and winning valuable rest time for Liu Bang.

Soon, Xiang Yu killed Han Wangcheng in Pengcheng, completely crushing Sean's dream of entering the DPRK. In the winter of the same year, Sean escaped from Pengcheng, escaped the pursuit of Chu Army, and finally returned to Liu Bang, where he was made a believer. From then on, he stayed with Hanwang day and night and became the minister of planning. In the Ming Dynasty, Li Zhi once commented on this matter: Xiang Yu's move was "to drive out a good strategist for the Han Dynasty." Indeed, Xiang Yu's killing of Han Wangcheng objectively helped Liu Bang a lot.