Since Liu Bei entrusted liu chan to the lord of the white emperor city, Zhuge Liang spent his life, so that shu Han developed and grew, in 228, Zhuge Liang's first northern expedition, the purpose of the northern expedition is nothing more than three points, "out of the master table" has "to eliminate the traitors, revive the Han room", Zhuge Liang also wants to avenge the former emperor.
Second, if you do not attack Cao Wei, Shu Han will perish, Shu Han terrain is dangerous, you can attack and retreat, but it is too difficult to unify the world, if you do not take the initiative to attack, Shu Han can only stay in the lofty mountains, third, the Northern Expedition can transfer internal contradictions, Jingzhou, Dongzhou, Shudi, although the three forces do not have a big conflict, but if they do not go north, there will inevitably be civil unrest.
However, the first Northern Expedition ended because of the cutting of horses, and the subsequent Northern Expeditions also failed one after another, and the Fifth Northern Expedition was even more powerful for the whole country, this time, Zhuge Liang was also the closest to success, and Sima Yi refused to fight, dragging on for more than a hundred days, and zhuge Liang was consumed alive, and this time the Northern Expedition also ultimately failed.
But if there is a person who does not die, the Northern Expedition will certainly succeed, this person is Liu Feng, Liu Feng is a dry son of Liu Bei, the Chronicle of the Three Kingdoms records: "The first lord went to Jingzhou, and raised a seal as a son without heirs." And the first lord entered Shu, and since Ye Meng also attacked Liu Zhang, he was more than twenty years old, had martial arts, and had excellent strength."
Liu Bei had no heirs at that time, and Liu Fengxiao was brave and good at war, and was a talented person, after Liu Bei broke with Liu Zhang, he let Liu Feng follow Zhuge Liang into Shu, and when he attacked Yizhou, Liu Feng fought bravely and was invincible everywhere he went, and after Yizhou was pacified, Liu Feng was made a lieutenant general in the deputy army.
In the twenty-third year of Jian'an (218), Liu Bei attacked Hanzhong in the north, Liu Feng as the main force against the enemy Cao Cao, and Cao Cao did not dare to fight, chose to withdraw troops, Liu Feng's talent is also gradually highlighted, well trained, will inevitably be able to become a fierce general, but Jian'an twenty-four years (219) Guan Yu handed over Jingzhou to people.
Liu Bei asked Liu Feng and Meng Da to lead the troops to the rescue, but Liu Feng did not move, after Guan Yu's defeat, Liu Bei also blamed the two people, and Liu Feng and Meng Da also had conflicts, after Meng Da's band was robbed by Liu Feng, he led his troops to Cao Wei, after Liu Feng was defeated by Meng Da, Liu Bei blamed him for not only failing to rescue Guan Yu, but also bullying Meng Da.
Zhuge Liang believed that Liu Feng was fierce and brave, and it would be difficult to control liu bei when he died, so Zhuge Liang asked Liu Bei to give him death, and Liu Feng, who should have become a famous general of a generation, died, so Zhuge Liang did not think about leaving Liu Feng when the Shu Han general withered away, Zhuge Liang should have also considered it.
But as Zhuge Liang said, Liu Feng was talented, but did not listen to the command, Liu Bei died, Liu Feng, although he was a righteous son, was much better than Liu Chan in talent, leaving Liu Feng, he would inevitably compete with Liu Chan for the throne, Liu Chan as an orthodox descendant of Shu Han, Zhuge Liang and Liu Bei naturally hoped that he could succeed to the throne.
But if Liu Feng had not died, Zhuge Liang would have been like a tiger during the Northern Expedition, and even if Zhuge Liang died of illness, Liu Feng would have been able to control the overall situation.