After Zhu went to the countryside, Zhuge sent a group of short messages.

Liu Bei was unable to restore the Han Dynasty and unify the world, mainly because of three people, Zhuge Liang, Guan Yu and Liu Bei.

First, before Zhuge Liang came out of the mountain, he formulated Longzhong Dui. According to his idea, because Cao Cao was powerful, he basically unified the north, which was far beyond Liu Bei's ability to cope.

After three generations, Sun Quan in Jiangdong has a solid internal unity and can only be a friend, not an enemy.

Liu Biao's ability in Jingzhou is average, and his two sons have no ability. In addition, there are factional disputes in Jingzhou, and Liu Bei should take Jingzhou as his first goal.

After controlling Jingzhou, as long as Yizhou was occupied, Liu Bei really had the capital to revive the Han Dynasty. Once the world changes, Liu Bei can lead an army north to Qinchuan, follow the example of his ancestor Liu Bang, forge ahead in Guanzhong and plot the world. On the other hand, you can send troops from Jingzhou and directly win Luoyang and Xudu. In addition, the Han Dynasty was still orthodox, and the people would definitely support the Han Dynasty and help Liu Bei accomplish the important task of reviving the Han Dynasty.

In this way, Liu Beixing's wish to return to the Han Dynasty can be realized, and Cao Wei will also become a stepping stone for Liu Bei.

Undoubtedly, Zhuge Liang's Longzhong Dui is very reasonable, but the inherent disadvantage of Longzhong Dui is that it ignores Sun Quan.

You know, Sun Quan has always wanted to occupy Jingzhou. Therefore, his father, Sun Jian, and his younger brother, Sun Ce, broke out wars with Jingzhou Liu Biao many times, and his father died at the hands of Jingzhou general Huang Zu.

If nothing else, Sun Quan will try his best to defeat Liu Biao, kill Huang Zu and occupy Jingzhou.

What's more, if Sun Quan wants to get further development, he must occupy Jingzhou. In this case, both public and private should control Jingzhou. How could Sun Quan let Liu Bei stay in Jingzhou?

Therefore, Zhuge Liang's longzhong pair can only help Liu Bei become the king of Hanzhong at most. As for trying to forge ahead in the Central Plains, Jingzhou will always be coveted by Sun Quan unless Sun Quan dies and there is civil strife in Soochow.

How can Liu Bei revive the Han Dynasty when he has to face Cao Wei and Dongwu?

Second, Guan Yu, there is no doubt that Master Guan, a former American, and Guan Yu, a brave soldier, are even more important.

So he is very strong, except for his eldest brother Guan Yu and his third brother Zhang Fei. Even the big boss of Dongwu, in his view, is just a child with a purple beard. In the case that Liu Bei has decided to return the three counties in Jingzhou, he flatly rejected Sun Quan and drove all the officials sent by Sun Quan away.

Later, during the negotiation, Guan Yu went to the meeting again, which greatly belittled Wu Dongren and improved his social status. When Sun Quan sent someone to propose to Guan Yu, Guan Yu actually said, "How can a tiger girl marry her son?" No matter how good his temper is, he can't stand the humiliation of Guan Yu again and again.

Don't forget, Guan Yu launched the battle of Xiangfan, and after the seven armies were flooded, Guan Yu actually robbed Wu Dong of all the grain stored in Xiangguan.

Sun Quan can't stand it any longer. After many humiliations and Wu Dong's strategic development, Monroe finally crossed the river in white, making Guan Yu defeated Maicheng and lost Jingzhou.

If Guan puts down his pride and keeps a good relationship with Sun Quan calmly and can't stop Bai Yi from crossing the river, then at least he can buy himself more time to occupy Fancheng and Xiangyang of Cao Cao.

Third, after Liu Bei and Guan Yu were careless about Jingzhou, Zhuge Liang and his ministers finally persuaded Liu Bei, and as a result, Zhang Fei came to make trouble again, because he drank too much and whipped his subordinates and was killed by them.

Losing two brothers at once, Liu Bei couldn't help it any longer. He assembled all the strength of Shu Han and launched the battle of Yiling.

The result was embarrassing. Lu Xun set fire to tens of thousands of troops of Liu Bei and killed dozens of generals of Liu Bei. Coupled with the battle of Xiangfan, the Jingzhou Legion headed by Guan Yu was almost completely annihilated, and the camp of Liu Bei was completely weakened and its foundation was shaken. In this way, Liu Bei completely lost the possibility of reviving the Han Dynasty and unifying the whole country.

Longzhong was deficient in congenital deficiency, Guan Yu neglected Jingzhou, Liu Bei defeated Yiling, and how did Shu Han govern the country?