In August 263, Sima Zhao, the ruler of the State of Wei, ordered the three Wei armies to go south to attack Shu, deng Ai led his men to smuggle 700 miles of Yinping in the no-man's land, take river oil, defeat Zhuge Zhan, and troops under the city of Chengdu, in November of the same year, Liu Chan, under the persuasion of Chen Zhou, under the condition that the main army of Shu Han had not suffered losses, Jiang Wei was still resisting on the front line, and the border army of Southern Zhongjiangzhou had not been lost, Kaesong surrendered, and Shu Han perished.
From the launch of the war to the demise of the Shu Han Dynasty, Zhong Hui and Deng Ai only took 3 months.
In 211 AD, Liu Zhang, at the suggestion of his subordinate Zhang Song, who had a ghostly fetus, sent Fa Zheng to welcome Liu Bei into Sichuan, Liu Bei led a small number of men and horses, taking Pang Tong, Wei Yan, Huang Zhong and others into Yizhou, Liu Bei and Liu Zhang met at Fucheng, after which Liu Bei went to Huimeng Pass, Liu Zhang returned to Chengdu, and it was not until 214 AD that Liu Bei took Chengdu and Liu Zhang surrendered.
Deng Ai
From Liu Bei's entry into Yizhou to Liu Zhang's surrender, It took 3 years for Liu Bei.
If we look at it from a temporal point of view, it is true that Liu Bei's time to destroy Shu is far longer than the time when Deng Ai destroyed Shu, but the reasons for the demise of the two Shu regimes are completely different, and the background of the times is not the same.
First, the difference in strength between the two
After more than 40 years of development, the strength of the State of Wei was already several times that of the Shu Han, and in order to attack The Shu State concentrated nearly one-third of the country's army, almost 180,000 people, which was nearly twice the number of the shu Han army, which was only the gap in the number of troops.
The Battle of Wei and Shu
For example, Zhong Hui, the commander of the Wei army, was also a first-class talent, coupled with Deng Ai, a military wizard, far exceeded the situation that Shu Han only had Jiang Wei painstakingly supported, and Sima Zhao, the ruler of the State of Wei, was very strong in both ability and ambition, at least a hundred times stronger than Liu Chan, the lord of the Shu Han Dynasty, that is to say, the Wei state lord Ming Guo was strong, and his strength was far beyond that of Shu Han.
Liu Bei's taking of Yizhou was a standard battle with fewer victories and more battles, because Liu Bei's strength was not as good as Liu Zhang's, Liu Bei only had five counties in Jingzhou before entering Sichuan, with no more than 30,000 soldiers, Liu Bei only brought 10,000 people into Yizhou, and Liu Zhang's army in Yizhou did not have 100,000 people at least 80,000 people, Liu Bei even if he added the army allocated to him by Ji Zhang, it was not half or one-third of Liu Zhang's army, which was only the difference between the number of troops on both sides.
After Liu Bei entered Sichuan, there was only one base area, that is, Huimeng Pass, all the logistical supplies had to rely on here, here was Liu Bei's only rear in Yizhou, held by Huo Jun, the five counties of Jingzhou could not help at this time, because liu Zhang's forces were separated in the middle, and the supplies of Jingzhou could not be transported to Liu Bei's army.
Liu Bei could only rely on the only 10,000 people in his hand plus the army given by Liu Zhang to attack Liu Zhang, so after fighting for three years, it was already very good.
Liu Bei
Second, the strategies of the two are different
In the battle of Deng Ai to destroy Shu, the State of Wei was correct in its war strategy, and at the same time, the surrender faction within Shu Han prevailed, Zhong Hui led the main force of the Wei army to drag down the main force of the Shu Han army, Deng Ai unexpectedly smuggled through the Yinping Ancient Road that no one had ever walked, and suddenly appeared on the outskirts of Chengdu, Deng Ai faced the Shu army that was not the main combat force, but the county soldiers, including the later Zhuge Zhan, led only the garrison troops in Chengdu, these troops had no combat effectiveness, and the most effective army in the Shu army was in the hands of Jiang Wei. The army led by Deng Ai was the strongest field force in the Wei army, and the results could be imagined.
Liu Bei's battle to attack Shu was taken step by step, one city after another, from Xuanmeng Pass to Chengdu, all the way south to attack the city strategically, even Liu Bei sent Zhuge Liang, Zhang Fei, and Zhao Yun into Yizhou to support it, it was also a city and pool attack, rather than directly pounding the Yellow Dragon like Deng Ai, directly attacking the Shu Han capital, forcing the shu Han supreme leader Emperor Liu Chan to surrender, only to achieve victory, Liu Bei's attack on Shu was more like a steady fight, step by step, the battle of Deng Aifa Shu, it was even more a decapitation operation. The thief captured the king first, so Deng Ai only took 3 months to destroy Shu, while Liu Bei took Liu Zhang in 3 years.
Liu Bei entered the Battle of Shu
Third, the capabilities of the two sides are different
Deng Aifa Shu, the most critical battle is to defeat Zhuge Zhan in Mianzhu, Deng Ai's opponent is Zhuge Zhan, the two are not on the same level, Deng Ai is a veteran who has experienced hundreds of battles, is experienced, resourceful, Zhuge Zhan is a fledgling, inexperienced, only with the aura on your father's head to sit in this position, the actual military ability is insufficient, the psychological quality is not good, it is normal to be defeated by Deng Ai.
Zhuge Zhan was defeated, Deng Ai soldiers came to chengdu city, in fact, Shu Han had no one to resist Deng Ai, although the main force led by Jiang Wei was still there, but in the Sword Pavilion and Zhong Hui confronted, far water could not save the near fire, Chengdu was already empty, Deng Ai could force a landing in Chengdu.
Liu Bei cut down Shu, the most critical battle is the Battle of Luocheng, Liu Bei's opponent is Liu Zhang's son Liu Xun, although the ability is not strong, but insist on not fighting, even Pang Tong was killed in this battle, it can be seen that Liu Bei encountered resistance is still quite large, and this is not Chengdu, only by taking Luocheng can you hit Chengdu, so the time is long.
Deng Ai smuggled yin ping
Besides, Deng Ai's military ability is definitely stronger than Liu Bei's, this does not need to be explained, Deng Ai is a rare intelligent and complete general in the late Three Kingdoms period, and Liu Zhang's ability is stronger than Liu Chan, Liu Zhang's good villain is also in charge of the state for more than 20 years, and has also quelled the rebellion within Yizhou many times, Liu Chan is a hand-throwing treasurer, not responsible for specific government affairs, and not too much in charge, so the difficulty of Deng Ai winning is actually less difficult than Liu Bei's victory, so Deng Ai will use time shorter.
Fourth, the situation between the two is different
When Deng Ai besieged Chengdu, Chengdu was basically an empty city, on the one hand, after years of war, Chengdu's reserves were not much, or even no, the whole of Yizhou was also economically depressed, the people were poor, on the other hand, all the troops in Chengdu who could fight were sent out to help Jiang Wei defend, Chengdu became an empty city, and those who could barely fight were lost in the Mianzhu War with Zhuge Zhan, and Chengdu was no longer able to continue to hold.
Liu Bei attacked Shu
At the same time, the surrender faction within shu han had already gained the upper hand at this time, mainly the local haoqiang shi clan in Yizhou, who were third-class citizens during the shu han rule, were oppressed, and hoped that shu han would perish, and the scholars represented by Yu Zhou urged Liu Chan to surrender.
The situation when Liu Bei besieged Chengdu was completely different, at that time Liu Zhang's army still had many troops in the city, and at the same time, the grain and money in reserve were enough to support Liu Zhang's needs to maintain the war for two to three years, Liu Zhang surrendered on the one hand, Ma Chao arrived, on the other hand, Liu Zhang himself was indeed a ruler who loved the people like a son, and did not want the people to suffer and war, if Liu Zhang really wanted to fight, Liu Bei might not be able to take Chengdu for 3 years.