At this moment, the Shu army was under great pressure on the Yong'an front. For several consecutive months, the Wei army's offensive had never stopped. They continued to attack the Yong'an defense line, and the battle was in a stalemate and the victory was difficult to decide.

However, since Simalun left Yong'an with 20,000 troops, the Yong'an defense line, which was already slightly weak, has become even more stretched and difficult to maintain.

After all, in the direction of Yong'an, the Wei army invested the most troops. The 80,000 people of the Right Legion plus at least 50,000 naval forces had a total force of 130,000, which was far higher than the Left Legion on the North Line.

Although Yong'an's defense line is known as the solidarity, the Wei army's attack was full of tenacity. Even if their attack had lasted for almost half a year, the intensity and strength of the attack seemed to have never declined. This undoubtedly put endless pressure on the Shu army guarding Yong'an, making them dare not slacken at all, and always maintain a high degree of vigilance.

Such persistence and perseverance also made the Shu army exhausted. After all, it maintained a highly nervous nerve every day, and anyone who persisted for more than half a year would collapse.

Yong'an is the gateway to the east of Shu Kingdom. Shu Kingdom is surrounded by mountains on all sides and is completely in a closed environment. Such geographical conditions are relatively extremely beneficial to defense. Only by blocking a few passes can you defend this basin.

But similarly, once the pass is lost and the enemy is rushed into the basin, it will be difficult for the Shu army to reach the sky if they want to defend it. Therefore, Yong'an's defense is crucial, which is why Jiang Wei stayed in Yong'an.

Although Yong'an and Jiange are known as the two natural dangers of Shu Kingdom, Yong'an's defense has never been tested. During the Battle of Yiling, although the Wu army had approached Yong'an, Lu Xun was afraid of Cao Wei's sneak attack on his retreat, so he stopped at Yufupu. The two sides had never really confronted each other in Yong'an.

After that, Zhuge Liang and Wu reconciled the old ways, and there was no war between the two sides again. Therefore, although the Shu Kingdom of Yong'an had always sent troops to defend, he never experienced war.

Now that Wei State destroyed Wu, the situation naturally became out of control. After losing the ally of Wu State, Yong'an naturally became the first line of defense to resist the Wei army.

Therefore, Jiang Wei did not dare to take it lightly. Compared with the Hanzhong defense line that he had been working hard to manage, Jiang Wei was always unfamiliar with Yong'an. After the defeat in the Battle of Xiling, Jiang Wei began to focus on managing the Yong'an defense line.

At the beginning, Jiang Wei, Lu Kang and Sima Lun, the three powerful figures of Shu Kingdom, were concentrated in Yong'an, and the Yong'an defense line also became the place where Shu Kingdom had the most concentrated troops. In Yong'an alone, more than 100,000 troops were concentrated. Although the invading Wei army surpassed the Shu army in terms of military strength, with the dangerous terrain of Yong'an being the pass and ten thousand men not being able to open, both sides could maintain a situation of 55 and 5, and the Shu army was able to defend Yong'an steadily without giving any chance to the Wei army.

But this time the Wei army's attack on Shu was not an ordinary military operation, but came with the ultimate goal of destroying Shu. Jiang Wei also had a clear understanding of this, so the Shu army could not lose or afford to lose in this battle.

Jiang Wei is good at attacking. He has launched attacks on the Guanlong area of ​​Wei more than a dozen times, but his defense is Jiang Wei's shortcomings. Jiang Wei usually adopts a defensive strategy to use attack instead of defense. If Jiang Wei is allowed to do a comprehensive defense, it would be really disappointing.

The defense system in Hanzhong is a clear example. The loss of Hanzhong and Yinping Wudu is actually closely related to Jiang Wei's original plan to gather troops and gather valleys. Although Jiang Shu's rebellion and surrender to the enemy eventually led to the collapse of Hanzhong's defense system, this cannot cover up the shortcomings of Jiang Wei's defense plan.

Jiang Wei's defense system was actually based on the premise that the Wei army was unable to supply food and grass. As long as the Shu army could defend important passes such as Yangping Pass in Lecheng, Seoul, the Wei army would inevitably retreat.

However, when the Wei army attacked, it had made careful arrangements for logistics supplies, and there was no problem of food and grass shortage at all.

On the contrary, because the Shu army gave up the outer positions and allowed the Wei army to march straight into and directly attacked the hinterland of Hanzhong. Even without Jiang Shu's surrender, the collapse of Hanzhong's defense system would be a matter of time.

If Zhong Hui had not evacuated decisively, it would have been possible that the Shu army would have even been abandoned by Jiange, and the Wei army would have probably already reached Chengdu.

The fall of Hanzhong also made Jiang Wei feel cold sweat, but no matter what, Jiange still defended, and the Shu army finally stood on the edge of the cliff and did not fall into the bottomless abyss.

However, the crisis was not resolved by defending Jiange. Instead, the Wei army's two-line attacks put endless pressure on the Shu army. Jiange and Yong'an are already two key areas that must not be lost in Shu. No matter which side there is a problem, the result will be the same.

In order to save the crisis in Jiang Wei, Jiang Wei specially sent Sima Lun to lead 20,000 troops to reinforce Jiange. Jiang Wei believed that with Sima Lun's ability, there would be almost no big problem in defending Jiange.

Now only Yong'an has to worry about this journey. Yong'an is not as good as Hanzhong, and Hanzhong has at least a defense depth like Jiange. Once Yong'an is lost, the Wei army will pour into the Shuzhong Basin like a flood that breaks the dam and can no longer stop it.

Therefore, in Yong'an's defense, Jiang Wei always dared not take it lightly and went all out to defend the ground. The Shu army did not give up easily in every position and every line of defense. He had to fight with the Shu army to the end. Many defense positions were even easy to defend several times. The entire Yong'an defense battle was extremely fierce.

Although Jiang Wei lacks defense, he still has a good helper, that is Lu Kang. As the last famous general of the Wu Kingdom, Lu Kang's ability has always been recognized by everyone, including the enemy.

Moreover, Lu Kang was very good at fighting defensive wars. It was precisely because of Lu Kang's assistance that Yong'an's defense line was as solid as a rock, and the Wei army could never break through this line of defense.

I thought that the Shu army could only defend Yong'an and Jiange, and the Wei army had no results in attack for many days, so naturally gave up. However, Jiang Wei obviously underestimated Cao Liang's determination and perseverance. Cao Liang would stop not launching troops this time. Once the troops were raised, there would be no reason to turn back. Yong'an could not conquer and Jiange could not take it. However, Cao Liang took a different approach and opened the third front to attack Shu in Nanzhong, and then directly attacked Nanzhong, taking advantage of the situation to open the southern gate of Shu.
Chapter completed!