History is the memory of things that have been said and done. —Carl Baker
With the advent of a table text that has been passed down through the ages, "The Table of The Master", Zhuge Liang's first Northern Expedition officially began.
This time during the Northern Expedition, Zhuge Liang carried out a lot of plans, first plotting against the new city of Taishou Mengda, but was quickly suppressed by Sima Yi, and then decided to divide the army into two roads, one way as bait to attract Cao Wei's main force, all the way to Qishan, attacking Longyou.
Zhao Yun was used as bait to attract Cao Wei's main force, which was also the only time Zhao Yun independently commanded the Shu army to fight. In this battle, Zhao Yun did one thing, but this incident killed Cao Wei's only great general who could resist Zhuge Liang.

The ancient roads from Hanzhong to Guanzhong are the Chu Chu Road (Xiegu Road), chen cang road (gu dao), Luo Gu road (傥羅道), and meridian road. Among them, the chute is the shortest and fastest post road in the whole process, and the part near Chang'an is a section of oblique valley, also known as the oblique valley road.
Zhuge Liang sent Zhao Yun and Deng Zhi to lead a small number of armies to march from Xiegu Road, occupy Jigu Valley, and make the appearance of directly attacking Chang'an. Cao Rui hurriedly ordered Cao Zhendu to supervise the right armies and go to defend against Zhao Yun. Zhuge Liang led the main army of Shu Han to attack the Longyou area.
Zhao Yun successfully lured the State of Wei led by Cao Zhen to the area around Jigukou and formed a confrontation. Unexpectedly, the movement was loud, Yongliang had not been at war for nearly ten years, and suddenly heard Zhuge Liang kill for the army, and the three counties of Longyou were all opposed, responding to Zhuge Liang. Cao Wei "fears the wilderness".
The Wei emperor Cao Rui hurried to Chang'an to sit down, and on the one hand sent the general Cao Zhen to Gao County to defend Zhao Yun, on the other hand, he sent Zhang Gao to lead 50,000 soldiers and horses to resist Zhuge Liang, and also informed Liangzhou to attack Nan'an County.
Zhang Gao took the lead in breaking the horse at the street pavilion, the army entered Longyou, Liangzhou Assassin Shi also sent troops to Nan'an County, Zhao Yun also lost in Jigu due to weak troops and strong enemies, defeated by Cao Zhen, and the situation was reversed.
The street pavilion is the throat of the main road from Guanzhong to Longyou, Fansu Road, the street pavilion was lost, the Wei army drove into the Long right, Zhuge Liangjin had no basis, had to announce the withdrawal of the army, the first Northern Expedition failed.
This was Zhao Yun's last battle, and he had always commented on the virtues displayed by Zhao Yun. Because when the Shu army retreated, all the armies were in a chaotic group, while the retreat of Jigu was very neatly organized, zhuge Liang wanted to use the extra silk cloth in the army to reward the generals of Zhao Yun's troops.
Zhao Yun said, "If our army loses militarily, how can it still be rewarded?" Please put all these supplies into the Akari Prefectural Treasury and reward them to the soldiers in the cold winter of October. Zhuge Liang therefore greatly praised Zhao Yun's character.
The Akagan (Cliff) Treasury is a prefectural treasury in the Tonghan Dynasty of the Xiegu Road. When Zhao Yun retreated, in order to prevent the Wei army from going deeper, he burned the boardwalk north of Chiya for more than a hundred miles. Afterwards, Zhao Yun tried to repair it, but because the water was really turbulent, even the boardwalk south of Chiya was washed away by the water, and the repair failed.
Zhao Yun's act of burning the boardwalk, although it saved the treasury, also had an impact on Zhuge Liang's Northern Expedition. Zhuge Liang's second Northern Expedition actually wanted to take the Xiegu Road, but Zhao Yun burned the Zhan Dao, and the Shu army could not send troops from the Xiegu Road, so they had to take the Chen Cang Road and disperse the pass.
Compared with Zhuge Liang, it was not a big problem to not be able to take the Diagonal Valley Road, but this completely pit Cao Zhen.
After Zhao Yun experienced Zhuge Liang's first Northern Expedition, he died of illness not long after. Cao Zhen succeeded Cao Xiu as the Grand Sima and gave him the sword to go to the temple and enter the dynasty. Cao Zhen believed that Shu Han had repeatedly invaded the territory, so he went to Emperor Wei and suggested that several large armies attack Shu Han.
Xiegu Dao was burned by Zhao Yun for a while, but Cao Zhen did not figure out this information. He planned to attack Shu Han from The Xiegu Road, but Chen Qun thought that the Xiegu Road was too dangerous to enter the army, so Cao Zhen divided his troops to attack Hanzhong from each province.
Cao Zhen divided his troops to attack Shu Han, but there was still a way for soldiers and horses to take the Xiegu Road, because the boardwalk was isolated, it was raining heavily, the road was impassable, Cao Zhen took a month, only halfway through, some ministers shangshu Wei Emperor withdrew, Cao Zhen was eventually forced to retreat.
Because of the wet and rainy weather in Shudi, Cao Zhen fell ill when he returned to Luoyang, and died not long after. That is to say, although Zhao Yun was defeated during the First Northern Expedition, he not only left the United States, but also killed Cao Zhen tactically.
Cao Zhen was the only general who could resist Zhuge Liang, unlike Sima Yi, who only avoided battle. Dragging Cao Zhen from Migu to buy time for Zhuge Liang to pacify Long Right, to the fire burning boardwalk, and pit Cao Zhen again. Zhao Yun's move before his death killed Cao Zhen, and it was not too much to say that Zhao Yun was Cao Zhen's nemesis.