Many readers are concerned about why the troops were withdrawn in the Hanzhong war. Next, we will work with you to understand and give you a reference.
After the great victory over Cao Cao, he was busy migrating people to several empty cities, engaging in internal affairs and promoting development. Where has the energy to continue to want Chang'an to send troops.
Many people said that the Hanzhong war was the only battle that Cao Cao lost to Liu Bei in his life. I think it depends on how it is said. In terms of the general pattern of Shuhan and Caowei, Liu Bei really won; but in terms of the campaign, Liu Bei led the army to defeat those left behind by Cao Cao.
It is recorded in the official history that the battle of Hanzhong began, and there was a rebellion in the north. Cao Cao led his troops to pacify the rebellion and did not fight with Liu Bei in Hanzhong. After Cao Cao returned to Hanzhong, Hanzhong had no reason for Cao Cao to continue. Both sides have lost a lot. If we continue to consume, we will lose money.
Cao Cao's action before withdrawing the army
When Cao Cao decided to withdraw from the army, he made a plan to stop Shu Han from moving into Hanzhong, and let Shu Han's economy back for several years.
Before Cao Cao withdrew, he ordered his subordinates to withdraw all the hundreds of Hanzhong's counties and leave several empty cities for Liu Bei. Although Shu Han can stand at the same time as Cao Wei and Dong Wu, its power is short-lived because its population is the short board of Shu Han. After a big battle, the number of young and strong soldiers will decrease, and it will take at least ten years for human reproduction to recover. According to the historical records, the population of Cao Wei is more than 4 million, that of Eastern Wu is about 2.3 million, and that of Shu Han is more than 900000.
When Cao Cao withdrew the common people of several counties, Liu Bei had to move into the common people's development, which required a lot of investment. This also made Shu Han, who was originally sparsely populated, once again dilute the population density and invest a lot of money.
The significance of Hanzhong to Shuhan and Caowei
Besides, why did Cao Cao withdraw? Hanzhong was a chicken rib for Cao Cao. Because the difference between directly entering the hinterland of Shuhan through Hanzhong and attacking Shu from Qishan is like a simple and medium choice.
However, Shu Han is different. Once the Han Dynasty is lost, Cao Cao can be at any time. To get Hanzhong, Hanzhong is the first line of defense of Shuhan. Whenever you invade, there will be a buffer time, which is of great significance.
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