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After Cao Cao seized Hanzhong, he did not listen to the advice of Sima Yi and Liu Ye to go south further to seize Yizhou while Liu Bei's foothold was not stable, but Hanzhong was the gateway to Yizhou after all, and after this place was occupied by Cao Cao, Liu Bei's group undoubtedly succumbed to a disadvantage in the situation.

【Delong does not look at Shu】

After Cao Cao occupied Hanzhong, Liu Ye said: "Ming Gong led 5,000 infantry, killed Dong Zhuo, broke Yuan Shao in the north, conquered Liu Biao in the south, and annexed eight out of ten hundred counties, and the power shocked the world, and even overseas was afraid." Now that Hanzhong has been captured, the Shu people are frightened and frightened, and they have lost their defenses one after another, pushing this offensive forward, and sending out an order that Shu can be pacified. Liu Bei is an outstanding figure with a plan, but he acted late, and the time to get Shu was very short, and he could not rely on the people of Shu. Now that we have broken through Hanzhong, the Shu people are shocked and frightened, and their power will overthrow itself. With your wisdom and wisdom, there is nothing that cannot be overcome by exerting pressure while their power is overthrown. If it is a little sluggish, then Zhuge Liang is good at governing the country and is the prime minister, Guan Yu and Zhang Fei are brave and crowned in the three armies and become generals, and the people of Shu have been stable, and they cannot be offended by virtue of holding on to the dangerous place. If you don't attack them now, you will surely become a trouble. But Cao Cao did not listen and decided to return.

At the same time, Sima Yi also suggested to Cao Cao: "Liu Bei used trickery to capture Liu Zhang, and the Shu people did not belong and fought for the distant Jiangling, this is an opportunity to break Shu, and it should not be missed." If Chen soldiers demonstrate in Hanzhong today, Yizhou will be shaken and uneasy, and if the troops are threatened, the Shu soldiers will inevitably collapse, and take advantage of this good opportunity to succeed. A saint cannot violate the time, nor can he lose time. ”

Cao Cao said: "People are suffering from discontentment, even if they get Longdi, how can they look at Shudi!" ”

According to the record of "Fu Zi", seven days later, the people who came to Shu said: "There were dozens of worries in Shuzhong a day, and although Liu Bei used beheading to suppress it, he still couldn't settle down." Cao Cao asked Liu Ye: "Can you still attack now?" Liu Ye replied: "Now that Shu has been initially settled, it can no longer be attacked." ”

Liu Bei occupied Yizhou in the nineteenth year of Jian'an (214), at this time he was not able to gain a firm foothold here, a year later Cao Cao captured Hanzhong, the door of Yizhou was wide open, so the people's hearts fluctuated greatly in a short period of time.

Historically, after Cao Cao occupied Hanzhong, he finally gave up continuing to expand his gains and went south, and I personally think there may be the following reasons:

First of all, although Liu Bei had already captured Yizhou at that time, Cao Cao's primary enemy was still Sun Quan, and Liu Bei was not Cao Cao's first target at that time. At the same time as Cao Cao's crusade against Hanzhong, Sun Quan had once again revealed his intention to send troops north to invade Hefei, and soon after the Second Battle of Hefei broke out, so Cao Cao urgently needed to return to the Jianghuai front and did not have the time and energy to further attack Yizhou.

Secondly, Cao Cao may have learned the lessons of the Battle of Chibi at that time. After Liu Cong's surrender, Cao Cao easily obtained Jingzhou and defeated Liu Bei Yu Dangyang, and then he was not satisfied with the results of the battle, and intended to further seize Jiangdong, only to lose at Chibi, and most of the Jingzhou territory he occupied was eventually taken away.

After Cao Cao occupied Hanzhong, Zhang Lu surrendered to Cao Cao soon after, which may have given Cao Cao a sense of immediacy, and Cao Cao gave up the opportunity to expand his gains for fear of repeating the mistakes of the past.

In the end, Cao Cao was no longer young at that time, and there was a hint of twilight as an old man, so Cao Cao's choice began to be more conservative.

【Great Opportunity】

After Cao Cao pacified Hanzhong in history, he did get a great opportunity to go south and occupy Yizhou. First of all, Liu Bei had just occupied Yizhou for more than a year, his foothold was not stable, and the people's hearts were not attached, Cao Cao seized Hanzhong, the gateway to Yizhou, at this time, which had a great impact on Yizhou, so it was very shocking in a short period of time, but Yizhou has been occupied by Liu Bei for more than a year after all, if Cao Cao did not take further action, this impact was enough to shake Liu Bei's foundation.

In addition, for Liu Bei, at that time, because of the Jingzhou incident, Liu Bei had just fallen out with Sun Quan, and the two sides almost fought each other, and Cao Cao's occupation of Hanzhong at this time was almost worse for Liu Bei.

Therefore, if Cao Cao took the opportunity to go south at that time, Liu Bei would most likely not be able to hold Yizhou. After all, although Liu Bei was a royal family at that time, the imperial court was in Xuchang not in Chengdu, and Liu Bei himself was also a dove occupying Nestle, which was morally untenable, Cao Cao used the name of the Son of Heaven, and Liu Bei would be completely at a disadvantage in righteousness, and there would inevitably be many Yizhou people who turned against Cao Cao at that time.

And Liu Bei has to deal with the affairs of Jingzhou with Sun Quan, no matter how fast he is, he will inevitably waste some time and energy, and he is likely to show an opportunity.

For Cao Cao, he can attack and retreat after occupying Hanzhong, and if he takes advantage of the situation to go south after a big victory, even if he loses, he can quickly retreat to Hanzhong, and this battle can be fought as long as Cao Cao is attentive.

If Cao Cao can take advantage of the situation to occupy Yizhou, even if Liu Bei is lucky enough to return to Jingzhou, there are only three counties left: Nanjun, Wuling County, and Lingling County, which will no longer pose a threat to Cao Cao, and the Liu-Sun alliance can also form a siege in the north and west, and Cao Cao, the Yangtze River that Sun Quan and Liu Bei rely on, can also bypass it in the west, and it is not a dream for him to further dominate the world.

【Relocation of the People】

Before Cao Cao left Hanzhong, he ordered Xiahou Yuan to be the general of the capital and led Zhang He, Xu Huang and others to guard Hanzhong; He appointed Prime Minister Shi Du as the lieutenant of the attached horse, and stayed in charge of the affairs of Hanzhong. Du Xi adopted the Huairou policy for enlightenment, and more than 80,000 people in Hanzhong voluntarily migrated to Luo and Ye.

At the end of the Eastern Han Dynasty, because of the long-term war, so many people in Guanzhong and even Luoyang were displaced, although Hanzhong was occupied by the traitor Zhang Lu, but because Hanzhong was rich, agriculture was developed, and Zhang Lu was well managed, so many refugees came to vote, after Zhang Lu's nearly 30 years of rule, this number was considerable, so Cao Cao occupied Hanzhong, and moved the people to Luoyang and other places where the population was lacking.

On the other hand, after Cao Cao occupied Hanzhong, he did not go further south, so Hanzhong actually became the front line of the confrontation between Cao Cao and Liu Bei, and in this case, whether it was to avoid unnecessary damage or to prevent Hanzhong from being captured by Liu Bei, Cao Cao should move the people as soon as possible.

Although Cao Cao let Liu Bei go after capturing Hanzhong, it does not mean that Liu Bei will appreciate it, Hanzhong is the gateway to Yizhou, Liu Bei cannot tolerate being occupied by Cao Cao, so afterwards, Liu Bei first sent Zhang Fei and others to send troops north, and after Zhang Fei lost, Liu Bei personally led the army north to try to seize Hanzhong.

[It's about to be 515, I hope to continue to hit the 515 red envelope list, and the red envelope rain will be able to give back to readers and promotional works on May 15. A piece is also love, and it must be better! 】