In the first month of 253 AD, the Han general Fei Yi was mysteriously assassinated, at this point Jiang Wei finally got rid of the restraint and grasped the military power of Shu Han, due to insufficient military food, he had to withdraw and retreat, in February, the State of Wei broke out li feng and Xiahou Xuan and others anti-Sima Shi coup, but the plan was leaked, Li Feng Xiahou Xuan and others were killed by Sima Shi. and wipe out the three tribes. The State of Wei fell into chaos for a while, and Jiang Wei took this opportunity to lead Zhang Ling and other generals out of Longxi again. Li Jian, the commander of Di Dao, raised the city and surrendered. The Shu army also received a large number of military supplies, and the army then marched into Xiangwu to engage in a fierce battle with the Wei general Xu Qian, who came to support. This battle was very fierce, the ace of the Shu army, the Wudang Flying Army, was completely destroyed, and the commander of the Wudang Flying Army, Zhang Ling, was killed, but the Shu army stubbornly defeated the enemy army several times larger than itself. Xu Wei was also beheaded by Jiang Wei, and the number of casualties of the Wei army in this battle reached twice that of the Shu army, Wei collapsed, Jiang Wei took advantage of the victory to pursue, successively attacked the river pass, lintao moved a large number of residents to the Shu state, which was Jiang Wei's seventh Northern Expedition.

A year later, in 255 AD, the Wei general Sima Shi died violently, Jiang Wei led Xiahou Ba, Zhang Ji and other tens of thousands of horses to go north again, in order to confuse the Wei army, Jiang Wei released false news, saying that he would attack Qishan Fort and other places in three ways. After Cao Wei's newly appointed Yongzhou Assassin Shi Wang jing learned of this, he ordered Wang Jing to stay in Di Dao, not to engage the Shu army, and to wait for reinforcements to arrive, and Chen Tai then requested reinforcements from the imperial court.
At the same time, he personally led a large army to garrison Chen Cang. In order to prevent the Shu army from sneaking in. In August, Jiang Wei detoured to Yuhan and marched towards Di Dao. Wang Jing made a wrong judgment under the mentality of seriously underestimating the enemy. Therefore, he decided to abandon his insistence and lead the main force to line up on the west bank of the Tao River to meet Jiang Wei. Jiang Wei led the Shu army to attack the Wei army. The Wei army was defeated miserably. Tens of thousands of soldiers were lost. This battle proved Jiang Wei's military command ability, after all, the victory of annihilating tens of thousands of enemies was unprecedented for the Shu state, and even Zhuge Liang had never achieved such a big victory before his death.
So Sima Zhao issued an urgent military order asking Deng Ailai to serve as the general of Anxi to carry out command work, and led the soldiers to advance towards Longxi in three directions, Jiang Wei did not expect that the reinforcements would come so quickly, he could only attack along the mountain, but was repelled, at this time Chen Tai threatened to cut off the shu army's way back, Jiang Wei had no choice but to withdraw from the Bell Causeway in a hurry. This was Jiang Wei's Eighth Northern Expedition.
The great victory in Taoxi dealt a devastating blow to the defensive forces in the Yongzhou region of the Wei state, and the ethnic minorities in the northwest were even more eager to appease. And Jiang Wei also reached the peak of his prestige in the Shu kingdom because of this battle. The bad news for Liu Chanbai as a general was that Sima Zhao began to pay attention to the defense of the Yongliang region. Chen Tai and Wang Jing were transferred away, and Deng Ai was allowed to take over the post of general of Zhengxi. Jiang Wei also ushered in his lifelong enemy.
After the Battle of Taoxi, Cao Wei believed that Jiang Wei's strength had been exhausted for a short time and would definitely not be able to march again. Only Deng Ai thought that Jiang Wei would take advantage of the victory to pursue the Northern Expedition again. Therefore, he took precautions in advance, and the following year, in June 256 AD, Jiang Wei did indeed send troops again. After arriving, he found that Deng Ai had long been prepared. Deng Ai then seized Mount Wucheng and defended it. After Jiang Wei arrived, he knew that he had lost the opportunity, so he took advantage of the night to cross the Weishui River and march eastward, speeding along the mountain. Wanting to attack Shangyi, Deng Ai returned to block the attack, and the two armies fought fiercely in Duangu. At this time, Jiang Wei waited left and right.
There was no waiting for Hu Ji's reinforcements, coupled with poor grain and grass, the Shu army was defeated, and in this battle, the Shu army lost thousands and was captured. The lower part of the account will be damaged by as many as dozens of people. Jiang Wei's Ninth Northern Expedition ended in a crushing defeat. Deng Ai is worthy of Jiang Wei's nemesis. In this battle, he expected the enemy first, commanded properly, and always held the initiative, although Jiang Wei had many northern expeditions before, he also won and lost against each other, but he had never been so hurt, although the Wei army also suffered tens of thousands of casualties in the Battle of Taoxi, but relying on strong national strength, the troops were very correctly replenished. However, after this defeat, the Shu kingdom was seriously injured and it was difficult to recover. This battle greatly damaged Jiang Weisheng's prestige, and the criticism of the Shu Han courtiers was rampant, and the military and civilians were also dissatisfied.
A year later, Jiang Weiyi took the mountain as the battalion and challenged many times, but Sima Wang and Deng Ai never stood out. The two armies fell into a long-term confrontation until the spring of 258 AD, Jiang Wei heard that Zhuge Wei was defeated, and had to lead the army to withdraw, this was Jiang Wei's tenth Northern Expedition, after which the voice of opposition to Jiang Wei's Northern Expedition became louder and louder, they believed that the Northern Expedition consumed military strength and national strength was the way to subjugate the country, and the only thing that supported Jiang Wei in the DPRK was Shang Shu Ling Chen, and the tragedy was that in this year Chen Wei died, Jiang Wei also became a poor lone minister, becoming another kind among the Shu Han ministers. Among them, Huang Hao Zhuge Zhan and others even wrote to Liu Chan to ask Liu Chan to depose Jiang Wei's military power, so he fell to the point where everyone shouted and fought, in such a difficult situation, Jiang Wei had to let go of a fight, and it was helpless to go north again, even in order to save his military power and to save his own life. So in 262 AD, Jiang Wei tragically embarked on the road of the Eleventh Northern Expedition. This time was the last Northern Expedition in Jiang Wei's life and the final chapter of the Shu Han Dynasty.