It was not that Liu Bei did not listen to persuasion, but that Liu Bei understood that only by using the excuse of avenging Guan Yu could he unite people's hearts and fight against Eastern Wu. After losing Jingzhou, the small people of the Shu Han State were tired, and if they could not survive in death and regain Jingzhou from Eastern Wu to open the channel, they could only be encroached upon as a divided regime. History has also proved this, so Liu Bei can only fight Eastern Wu first. As for Va Wei, he didn't have to think about it, the difference in strength was huge, and the pure egg touched the stone. Although Liu Bei won the Battle of Hanzhong, that was the reason for the topography of Hanzhong. If Shu Han took the initiative to attack from Yizhou, which was easy to defend and difficult to attack, Shu Han would definitely be killed in a second. As for the timing of Cao Pi's usurpation of Han, there was no turmoil at all, and at this time Liu Bei had no chance at all.
Liu Bei and Cao Cao were repeatedly defeated in battle, and the only war won was the Battle of Hanzhong. Liu Bei did his best for the victory of the Battle of Hanzhong, and in order to get Sun Quan to contain Cao Cao Liu Bei, he ceded several counties of Jingzhou to Sun Quan. The price paid was that Cao Cao could not concentrate his full strength when the Battle of Hanzhong broke out, and even then Yizhou also paid the degree of men's battles and women's luck to win the fierce victory in the Battle of Hanzhong. If Liu Bei was allowed to abandon the easy-to-defend and difficult terrain of Yizhou to take the initiative to attack Cao Cao, Liu Bei would not be stupid and would not send him to death. Yizhou, which is thousands of miles away from the wilderness, is easy to establish a divided force, but once it encounters a strong enemy, it is difficult to break through the trap and realize Liu Beixing's wish to restore the Han Dynasty to the old capital
Without this big granary, the Qin state would not have swept through Liuhe, and Liu Bang would not have created the Four Hundred Years of han Dynasty. Therefore, the kingdom of Tianfu achieved the Qin and Han Dynasties, but more births were indeed divided regimes. As the saying goes, "The world is not chaotic before Shu is chaotic, and the world has been determined to be undecided", and the country of Tianfu, which is thousands of miles in fertile wilderness, is easy to achieve divided forces because of its rich land, fierce folk customs, and terrain that is easy to defend and difficult to attack. Liu Bei completed the crossing of Jingyi according to Zhuge Liang's Longzhong pair, and then defeated Cao Cao through the Battle of Hanzhong to secure the Yizhou Gateway. At this point, Liu Bei Group has perfectly achieved all the goals of Longzhong for the second stage and completed the situation of one of the three worlds.
By now, Shu Han had no capital to catch his breath, and Sun Quan was very dissatisfied because he did not change Jingzhou. And Liu Bei, who regarded himself as the uncle of the Emperor of the Great Han Dynasty, nominally wanted to restore the Han Dynasty and return to the old capital, how could he divide it in Yizhou? Whether it is the historical mission or Liu Bei's personal unwilling character, we must continue to work hard. Therefore, in the face of Wei and Wu, the lesser of the two evils can only target Sun Quan. Unless Liu Bei was willing to divide one side to maintain a brief regime, history proved that the division of Yizhou could not last long. In the Three Kingdoms era, when the north was the center of economic gravity, the gradually stable Cao Wei regime held absolute power: the soldiers were well fed and difficult to shake
After the unification of the Qin Dynasty, the land of Baiyue was recovered, so before the Tang Dynasty, the north had always been the core of the dynasties and the center of finance and taxation. Due to the relatively rich development of the early north, and the long-term war with the northern nomadic regime cultivated the martial and fierce folk style; in addition to the proximity to the desert, the warhorse was easy to obtain; so Cao Cao, who controlled the north, formed a crush on the strength of Shu and Wu. Cao Wei of the thirteen states of the Great Han Dynasty occupied 9: Jizhou, Youzhou, hezhou, Liangzhou, Yuzhou, Qingzhou, Xuzhou, Yanzhou, and Silizhou; and there was no shortage of highly effective Liangzhou Iron Horsemen. Eastern Wu had Yangzhou and Jiaozhou, and Shu Han had only one Yizhou. No matter how rich Yizhou was, it was useless in the face of absolute strength, and the family foundation accumulated from Liu Zhang's time had been basically exhausted by the time of the Hanzhong War and the establishment of the Shu Han Division. Let Liu Bei abandon yizhou, which is easy to defend and difficult to attack, to take the initiative to attack the powerful Cao Wei, then Liu Bei cannot be called Cao Cao's words of "heroes in the world, only jun and cao'er".
In order to gain the strength to confront Cao Wei, in addition to retaking Jingzhou, it was inevitable to annex the territory of Eastern Wu and strengthen himself to form a situation in which the Yangtze River was naturally dangerous and Cao Wei crossed the river; then there was capital to compete with Cao Wei for the world precisely because of the innate deficiencies of Shu Han, so Liu Bei wanted to expand his own strength. Jingzhou, on the other hand, served as a bridgehead for outward expansion in the Shu Han regime, so it was crucial. Lü Meng crossed the river to capture Jingzhou, so that the Shu Han clique could only hold Yizhou. Liu Bei launched an army to attack Eastern Wu only to avenge Guan Yu, and to retake Jingzhou, which was guarding the throat of Shu Han's fate, was the ultimate goal. As we have already said above, the strength is not as good as Cao Wei's how to survive, Shu Han relies on the terrain of Yizhou that is easy to defend and difficult to attack; while Eastern Wu relies on the Yangtze River. Liu Bei could only take Jingzhou to complete the unification, and then go down the river to take down the health and then pass it on. In turn, with the natural danger of the Yangtze River and Cao Wei crossing the river, Liu Beifa Wu was a battle against the water. As a result, Liu Bei's bet was not successful, yiling defeated Shu Han yuan qi and was seriously injured; Liu Bei's white emperor Chengguo let the Shu Han regime enter the countdown.