Guan Yu is in the north of the road, that is to have the advantage of the Han Naval Army, although it seems to be deep behind the enemy, but it is really not possible, Guan Yu can also rely on the response of the Han Naval Army, temporarily retreat and recuperate.

In other words, Guan Yu has a way out.

But in today's Wancheng, there is no retreat in the north, if Deng Ai really dares to lead his troops deep into the north of Wancheng, then what awaits him must be the encirclement and suppression of Wei thieves, and there is no possibility of survival.

Xu Shu saw this very clearly, so when he heard that Deng Ai was going to take this risk, he directly stood up to stop it.

But Deng Ai, he is not an unwise person, it is impossible not to know that the geographical situation of Wancheng is different from that of Jiangling, and he can't so simply copy his father-in-law's plan for the North Road.

Deng Ai still has his own reasons.

Judging from Sima Yi's previous attitude towards "Wuguan Emergency", this old turtle was bent on defending, so even if he really led his troops to the North Dao, he should not easily send troops to encircle and suppress him.

For three consecutive months, the defenders of Wancheng still only had 20,000 people, and no reinforcements had arrived, so it was impossible to gather enough troops in the Central Plains direction for a while.

In the end, Deng Ai also has his own way out. The mountain road between Wuguan and Wancheng is not guarded by too many Wei troops, and now Sima Yi is shrinking to defend, and it is impossible for the defenders in the direction of Wuguan to give up the city defense of the pass and run to encircle themselves, so this place can be used as a retreat when Deng Ai's march is not smooth.

Yes, it's a bit risky, but it's not worth trying.

Therefore, Deng Ai really wanted to implement this plan, and for this reason, he seriously wanted Xu Shu to explain his reasons.

But Xu Shu still disagreed.

Sometimes, Xu Shu is also very curious, how did Zhang Yuanchang's cautious and almost timid character teach such a bold apprentice?!

Yes, Xu Shu admits that Deng Ai's plan is reasonable and feasible, but the risk is too great.

As long as there is one link in this that is different from Deng Ai's prediction, then Deng Ai will only have one ending in the north of Wancheng, and there is no second choice.

Moreover, if Deng Ai's plan is more profitable than risky, then Xu Shu also has to admit that this is a way to solve the problem, but your father-in-law was in the North Dao at the beginning, and with Zhou Yu's ability to command the army, he still fought for nine months before he conquered Jiangling.

How can we have so much time to spend with Wei Thief?!

With that kung fu, it is better to risk the taboo of the soldiers, directly fight for casualties, and storm Wancheng.

At this time, Deng Ai was still young, and his thinking was still not too comprehensive, which was why Xu Shu had to restrain Deng Ai.

But Deng Ai had a question, and he also asked Xu Shu.

"This can't be done, that's not possible, is there only one way to attack?!"

This is also the reason why Xu Shu has not been able to make up his mind completely until now.

There is a cloud in the book of war: the first army is to attack and plan, the second is to fight and the second is to attack the army, and then the next is to attack the city. The method of siege is a last resort. Repair the oar, with equipment, three months and then completed; It's been three months. It will be overwhelming and the ants will possess it, kill one-third of the soldiers, and those who will not pull out the city will also be attacked by this disaster.

Sun Wu and his old man have long said that if the siege of the city causes one-third of the casualties of the soldiers, that is the "disaster of attack", and it cannot be done.

And the problem now is that Xu Shu is not sure that he will be able to capture Wancheng with one-third of the casualties.

In these years, the siege efficiency was really low, and the casualty rate was very high. The attacker suffered 30,000 casualties, and the defender of the city may not have 10,000 casualties, if Sima Yi continues to be able to endure, Xu Shu still can't capture Wancheng.

Therefore, Xu Shu's previous suggestion to Guan Ping was also a strategy to attack the heart, to suppress people with potential, and to lure the enemy into dividing troops. But these schemes were all broken by Sima Yi one by one.

As for Xu Shu, he is not the kind of person like Zhuge Liang who leads the army head-on, but finds that he is also very capable of leading troops. Xu Shu has a certain ability to lead troops, and he can also use it when he is guarding the place in Jingnan, but now in the face of Sima Yi, an old turtle who is bent on defending, Xu Shu really has no choice.

After all, this is Sima Yi. If he is determined to be a turtle, Zhuge Liang will not have a problem with him.

The attack on Wancheng lasted about twenty days, and the siege found that Sima Yi was well defended, and the defense of the city was very orderly, and there were no flaws at all, and the tricks were seen through one by one, and it seemed that in addition to the hard attack and hard consumption, there was really nothing to do.

Things have come to this point, and Xu Shu also knows that there can be no more luck.

The heart is horizontal, and when it is time to be ruthless, you must be ruthless.

Let's go hard.

Wancheng is too important, if Wancheng is not opened, there will be no gateway to the Central Plains. It is also worth the sacrifice for the sake of this strategic point.

In this way, Wancheng in early February fell back into war.

And Sima Yi has long expected this.

In other words, Sima Yi wished that the Shu thieves would attack it.

Everyone is a person who reads military books, and no one knows less than anyone else.

A strong attack is the most efficient means of siege, and if it cannot be attacked for a long time, it will inevitably affect the morale of the Shu thief army. Being able to force the Shu thieves to attack Wancheng by means of forcible attack is equivalent to occupying the upper hand in this war for Sima Yi.

Therefore, Sima Yi is really not afraid of fighting with the Shu thieves, and at the same time, he really doesn't want Cao Zhen to follow the edict to rescue Wancheng.

It's not that Sima Yituo is big, it's mainly right. No matter what Sima Yi thinks, Cao Zhen's coming to Wancheng to rescue is a thing that will do more harm than good.

Yes, now Sima Yi is short of troops after all, but they are forced to the point that the Shu thieves can only use hard attack means to attack the city, so as long as Sima Yi fights steadily and steadily, and at the same time pays attention to motivating the morale of the army, then fighting to the end, it is to fight whose will to fight is higher, and he can bear the loss of casualties more.

Although it is not very safe, the original situation in Wancheng is not this kind of situation, it is a situation where Wancheng may be lost at any time, and it is not easy for Sima Yi to get back to the current situation.

Although Sima Yi was also worried about the problem of too few troops, at least for a short time, Sima Yi controlled the defenders of Wancheng and was confident enough to block the Shu thieves.

But when Cao Zhen came, things were hard to say.

The first one, Cao Zhen is here, who is this Wancheng guard?!

In any case, Cao Zhen's official position and status must be higher than Sima Yi's, once he arrives in Wancheng, he will inevitably take over the command of Wancheng If he doesn't agree with the defensive strategy he is defending, what should he do?!

The second one, Cao Zhen is here, is he really capable of defending Wancheng?!

It's really not that Sima Yi looks down on Cao Zhen, it's really Cao Zhen's combat achievements over the years, which are a little too stretched.

In this time and space, Sima Yi and Cao Zhen at this point in time really don't have much friendship.

Although Sima Yi has also heard of Cao Zhen's fame, and has also heard from others that Cao Zhen is a very capable general of the Cao clan, the governor of Yongliang, and all the Yongliang and Erzhou that he fought were lost, what kind of "very capable" is this? !

Oh, it's not right, at least in the mouth of Sima Yi's eldest son, Sima Shi, Cao Zhen is still capable.

"This person is like a guinea dog, but he still has the face to live in the world, which is also an ability."

Sima Shi said.

At this time, Cao Zhen's status in Sima Shi's heart is probably equivalent to Xiahou Nan's status in Cao Zhen's heart - it's just a waste, if he is not noble, how can such a person have the opportunity to lead the army to fight.

Sima Yi is an old fox, and he is quite sleek in dealing with people and everything, and when he heard Sima Shi say this, he directly reprimanded Sima Shi. But Sima Yi's focus was not to reprimand Sima Shi for what he said wrong, but to teach Sima Shi to know how to judge the situation, some things can be said, and some things will cause trouble for himself.

It can be seen that Sima Yi doesn't say it on the lips, but he may not think so in his heart.

Sima Yi was also afraid that at such a critical moment, Cao Zhen would come to Wancheng to blindly command, and he would mess up the situation that he had managed to get back.

Wancheng is fortunate to be able to defend it now, but don't make a moth. If the governor of Yongliang loses Wancheng again, it will be a big trouble.

But no matter how worried Sima Yi is, Cao Zhen's arrival will not be diverted by his will.

After holding Wancheng for almost a month and dealing with the strong attack of the Shu army outside the city for more than ten days, Sima Yi finally waited for Cao Zhen's reinforcements.

To tell the truth, Sima Yi is still very happy to be able to come to reinforcements at this time.

The strong attack of the Shu thieves is really not so easy to defend, and it is impossible for their own side to lose no 20,000 defenders at all, and now they have lost more than 3,000 people, and if they continue to defend like this, they will not see the arrival of reinforcements, which is also a blow to the morale of their own soldiers.

But at the same time, Sima Yi was still worried that when Cao Zhen arrived, would he feel that he would be able to do it again, and he had to lead the troops to take the initiative to fight and strive to repel the Shu thieves. Really, this is what Sima Yi is most worried about.

Fortunately, this incident did not happen after all.

After Cao Zhen arrived with reinforcements, he didn't put on a boss posture at all, and as soon as he saw Sima Yi, he clarified the responsibilities of the two with Sima Yi.

Sima Yi is the general of Wancheng ordered by the Son of Heaven, and Cao Zhen is just leading troops to help, so Cao Zhen made it clear to Sima Yi that he obeyed Sima Yi's command.

From this point alone, Sima Yi had to sigh about Cao Zhen's bearing to be honest, this really didn't look like something that a Cao clan general could say.

There is no way, when Cao Cao was in power, the method he used was to use clan generals such as Zhuxiahou Cao to control generals with foreign surnames, and Sima Yi was used to it.

Now it is not easy for Cao Zhen to take the initiative to say that Sima Yi is the main general, and he is willing to obey Sima Yi's dispatch, which shows Cao Zhen's generosity.

The second point is that Cao Allah confessed to Sima Yi that 15,000 of the reinforcements he brought were newly recruited soldiers, and these people were put on the city wall to scare the Shu thieves by more people, which required them to go into battle and succeed if they did not add to the chaos.

This confession and cognition also made Sima Yi impressed with Cao Zhen, this person is not incompetent, it can be seen that in the first battle of Guanzhong, this person was also burdened by others.

As for the third point. Cao Zhen suggested that Sima Yi that Wancheng was the gateway to the Central Plains and was the top priority. Now that Wuguan has been guarded by General Guo Huai, it is impossible for the Shu thieves in Guanzhong to attack in a short period of time, so they only need to stick to Wancheng and retreat the Shu thieves in Jingzhou.

As soon as he said this, Sima Yi directly sighed: Cao Zidan, what a beautiful woman.

(End of chapter)