First, when Liu Bang and Liu Bei compete for the world, the most important thing is to leave Sichuan and enter Sichuan, occupy an important position of the audience and establish a forward base. The future career laid the foundation, and the result of this most crucial step led to the final different results between Liu Bang and Liu Bei. Shu and Han failed to unify the Central Plains because of their different operational motives and logistical conditions.

Second, after the demise of the Qin Dynasty, Liu Bang was named Hanwang by Han Yu and arranged to go to distant places such as Bashu and Hanzhong. Xiang Yu also ordered Wang to monitor Liu Bang. Although Liu Bang was not satisfactory, Liu Bang was no match for Xiang Yu at this time. He can only obey the arrangement and lead his men to his own territory. Liu Bang's people all came from the eastern part of Guanzhong, so when Liu Bang arrived in Hanzhong, many people fled. Fortunately, Xiao He left Han Xin and hope to Liu Bang.

Third, when Liu Bangkai set out, Han Xin adopted the strategy of "hiding the position of Ming Xiu Road" and successfully defeated the Three Kings of Guanzhong. The occupation of Guanzhong land laid the foundation for Liu Bang to follow Xiang Yu. When Liu Bang joined the army, because everyone was from the eastern part of Guanzhong, when he left Sichuan to occupy Hanzhong, everyone had to go home from the bottom soldiers to Liu Bang, so everyone had enough war motives. When Zhuge Liang went out of Sichuan, except for some tall buildings, the soldiers at the bottom of the army were all locals from Sichuan and Chongqing. Although the name of this war is to wipe out the traitor Cao Wei, this slogan may not be as good as broth in the hearts of soldiers. So the power of war is very different from that of Liu Bang.

Fourth, Liu Bangjin Xianyang, everyone went to treasure hunt, and Xiaohei went to Xiang's house to find all the materials in the world. This must have the terrain of Sichuan and Chongqing, which solved the logistics transportation when Han Xin went out of Sichuan. In the early years of the Western Han Dynasty, an earthquake in Hanzhong did not cause great losses, but only changed the flow direction of a river. This river was an important transportation channel for grain and grass when Liu Bang left Sichuan. After the diversion, Zhuge Liang, though abundant in food and grass, ranked second, but the terrain and food and grass in Sichuan and Chongqing consumed a lot on the road, and the time was not guaranteed.

This has put great pressure on the logistics work of Zhuge Liang's army and prevented it from fighting in an all-round way.