Sima Yi only learned about the big explosion in Yixian after he captured the road.

In other words, the earth-shattering explosion that Cao Xing saw with his own eyes at that time still did not clean up the scourge of Sima Yi.

At that time, the 30,000 troops of Yizhou attacked Yixian and found that it was only an empty city, so Sima Yi ordered Tian Xu and Hu Lie to lead 20,000 troops into Yixian to prevent Jia Xu from suddenly leading the army back to attack Yixian, and he personally led 10,000 elite soldiers to rush to the west of Yixian overnight.

The 20,000 Yizhou soldiers stationed in Yixian County, including the two generals Tian Xu and Hu Lie, were all buried in the city after the explosion, and none of them came out alive. And Sima Yi was able to escape this catastrophe again, thanks to the timely news of Yan Yan's setback in Lintao. If he hadn't rushed to Yidao to join Yan Yan, maybe he would have lived in Yixian County this time, whether he lived in a mansion or a grass house, as long as Sima Yi slept in Yixian County that night, his bones would definitely be gone, turning into powder.

When Yizhou Hosaku, who was in charge of transmitting information between Yixian and Didao, told Sima Yi about the violent explosion in Yixian, because no eyewitnesses survived at the time, he thought that the gunpowder carried by the Yizhou army was ignited by the Liangguo spies lurking in Yixian. This time, Sima Yi somewhat overestimated the power of the gunpowder produced in Yizhou.

In fact, according to Jia Xu's estimate, even if all the gunpowder stored by the Liangzhou Army was used up, it would not be able to completely blow up a city into powder. But some things are so coincidental, the gunpowder brought by the Yizhou army has not had a chance to use it until now, although the amount is not as huge as the one buried under the city, but the gunpowder on the ground is superimposed, and it produces a more terrifying power, so it finally blew up the Yixian County into a scorched earth.

After many days, when the war between Liangguo and Yizhou came to an end, and the people who originally lived in Yixian returned to their hometown, they were terrified to find that the unrecognizable Yixian County was full of charred limbs and broken arms, and the horrific scene was like hell on earth.

In order to prevent these people from suffering from mass psychological disorders, Zhao Xing ordered the relocation of the administrative office of Hanyang County to Xianqin. As for the man-made Shura field in Yixian, it was attracted to the water of the Wei River, and since then it has been completely submerged in the river of Shuiyue.

For Zhao Xing, who had already arrived in Gaoping and was about to send troops to Chang'an, the question now was how to completely wipe out the remnants of Sima Yi's troops.

The 40,000 reservist recruits led by Zhang He were already approaching Shangguocheng; the Lintao fortress garrisoned by Wang Shuang opened the closed exit shortly after Yan Yan led his army eastward; and Fuzhi, who had been holding his troops in Wudu, had already sent 5,000 soldiers to Wudu Road on the edge of the Western Han River, which was just right for Sima Yi to return to Yizhou as he went south.

The nearly Wanyi Prefecture army stationed in Shangguo City was definitely unable to resist Zhang He's attack, although he only led a large group of Liangguo recruits. After the 10,000 Yizhou Tengjia soldiers led by Sima Yi converged with Yan Yan's remaining 35,000 mixed Han and Qiang troops, there were less than 50,000 people left.

To the west of Didao County, where Sima Yi was stationed, Wang Shuang's 5,000 hoplites were now blocking the road to the west; to the east of Didao, there were 40,000 troops of Zhang He's netting to cut off the way to retreat eastward; to the north of Didao, there were 10,000 vanguard troops led by Jia Xu waiting in the Shooting Tiger Valley in the north; and to the south of Didao, Wudu County, led by Fu Zhu and Han Wei, was garrisoned.

At this point, the eastern and western armies of Yizhou, which broke into the hinterland of Liangguo, have been completely besieged near the road, if there is no strong reinforcements from the periphery to break through the blockade of the vanguard army, then Sima Yi will be trapped alive even if he has the ability this time.

The most important thing is that although Sima Yi feels that he has fallen for Jia Xu's tricks, he still doesn't realize the huge crisis that is coming!

Sima Yi only knew that the vanguard army was only 40,000 people, and even if they were all surrounded, it would be impossible to eat his 50,000 army, but he obviously didn't find out that Zhang He, who had served as the head of the Yuyang Training Regiment, was an out-and-out training maniac.

Although it has been less than a year since Zhang He took office, he has personally trained thousands of euphorbia warriors for each of the three heavy infantry divisions, and the euphorbia warriors that appeared at the head of Lintao City came from him. Two months ago, Liangguo urgently recruited 40,000 new soldiers, after Zhang He's intensive training, now has initially formed combat effectiveness, if it is matched with the standard equipment provided by the Jin State, if the Yizhou army really encounters Zhang He this time, I am afraid that it will not be able to retreat at all.

When Zhang Wei and Yang Ren, the two generals who stayed in Shangguocheng, fled to Didao with less than 2,000 remnants, Sima Yi suddenly woke up. The unfavorable news came one after another, so that Sima Yi finally figured out the plan of the old guy Jia Xu.

First, Yixian was bombed, then Jia Xu led the army to appear in the Shooting Tiger Valley, then Wang Shuang's troops built fortifications in the Liangqu Valley west of Lintao, and then Zhang He suddenly led the army from the direction of Sili, and the only thing that did not come from the bad news was Wudu County in the south.

A few days ago, Jia Xu obviously withdrew to Gaoping urgently with his troops, but now he appeared in the Tiger Valley like a ghost, which means that the previous withdrawal of the vanguard army was just a cover. Sima Yi thought that since Jia Xu didn't go back to rescue Gaoping City, then there was a problem with the Hu people who attacked Gaoping City!

Although he didn't want to believe it in his heart, Sima Yi still thought with some pain that if the person who hadn't appeared for nearly half a year secretly led a cavalry pretending to be Hu Ren to rush into Chang'an, then Huangfu Song, who led the army north, would be finished this time, and if the Yizhou army led by him could not jump out of the encirclement of the vanguard army in time, and wait until that person rushed into Yangping Pass with a large army, I was afraid that this time he would really die without a place to bury.

Sima Yi, who felt that the situation was critical, hurriedly convened Yan Yan and the generals to discuss the matter, and there was only one topic - to find a way to retreat in the direction of Yizhou!

Yan Yan believed that Wang Shuang's 5,000 troops blocking the road to the west were relatively weak, and suggested that the Yizhou army withdraw from Minshan to the Guanghan vassal state. Zhang Wei, who was familiar with the terrain in the Hanzhong area, proposed to head south, break through the blockade of the defenders of Wudu, and follow the waters of the Western Han River down the river into Guanghan County in Yizhou. There are also people who feel that although the troops led by Zhang He are numerous, they are obviously not the vanguard army, so they should break through to the east and return to Hanzhong along the road from which the East Route Army came.

In short, no one proposed to go north to shoot Tiger Valley, because everyone was frightened by the big explosion carefully designed by Jia Xu, and now anyone who mentions Jia Xu's name will feel panicked.

Sima Yi looked at the topographic map near the road, and after thinking for a long time, he finally thought of an equally vicious retreat trick.