The young man who spoke was none other than Sima Yi. Guo Jia saw Sima Yi come out, and his eyes suddenly shrank! He knew that this person had been suppressed by him for a long time, was this to come out?

Don't say what Guo Jia thinks, just say that Cao Cao raised his eyebrows after listening to Sima Yi's words: "Zhongda, you can tell me to listen to it." ”

"It's the lord!" Sima Yi replied, "I asked Bao Taishou that the city wall west of Julu City has not been repaired since he came, and the north, south, and east sides have been repaired in the past two years. In this case, I suggest that the western wall be stormed. Of course, a simple siege is not enough, and I suggest a two-pronged approach. ”

After hearing this, Cao Cao became interested, and he said, "What is a two-pronged approach? ”

Sima Yi replied with a smile: "The lord can order someone to dig the ground and dig the west city of the hole." ”

"No! With this plan used to attack the edge of Wancheng, Han Fei would definitely see through the plan of digging the ground. This plan will not succeed. Li Dian said on the side.

"Hehe, General Mancheng, my words are still finished, I don't suggest that the lord dig a hole in the ground to enter the city, just dig the hole under the city wall. One side of the wall was hollowed out in order to bombard the wall with catapults on the ground. The city wall of Naxi is in disrepair, and there is a high probability that it will collapse under the attack of two sides. Then our army will be able to rush into the city along the collapsed place. Sima Yi finally finished his plan, and Cao Cao couldn't help but nod after hearing it. He waved his hand to signal Sima Yi to return to his position, and then turned his head and asked Guo Jiadao, "How about Fengxiao's plan?" ”

"Lord, you can give this plan a try!" Guo Jia replied affirmatively.

"Good! From today, the troops will be divided into camps in the west, and Xiahou Yuan and Sima Yi will order you to lead 10,000 horses to camp in the west, and then dig the ground under the city wall. ”

"It's the lord!"

"The last will be ordered!" Sima Yi and Xiahou Yuan replied almost at the same time. Then the two got up and led their troops to camp outside the West City, and then began to dig the ground.

It's easy to say, but it's not easy when you really do it, but fortunately, Cao Cao brought a golden captain by his side, and under his guidance, they really let them dig a tunnel leading to the city wall. The camp was built ten miles from the city, and this underground tunnel was ten miles long, and it could go down to three or five people at a time, so it was impossible to complete it in a day or two. So Captain Touching Jin only gave Sima Yi and Xiahou Yuan an approximate time, that is, it would take at least five days.

In the past five days, in order to confuse Han Fei and others in the city, Cao Cao insisted on attacking the city every day, and he attacked on both sides every day. At the same time, Cao Cao also ordered the craftsmen to build two more catapults. Everything was ready, and it took five days for the western wall to begin to collapse.

Han Fei has been worried about the past few days, the soldiers in the city have suffered heavy losses, and most of the people he brought have already suffered casualties, counting the days, the lord should have received a letter asking for help, and he doesn't know when the reinforcements will arrive. In addition, Bao Yan's departure made Han Fei unhappy all the time.

The ghost knows what secrets about Julu City are in Bao Yan's hands, although he has been checking and filling in the gaps in the past few days, he always feels that there is something that has been neglected. In addition, the Cao army has been attacking the city on both sides in the past two days, and it is clear that there are generals guarding the city, but the Cao army still only sends soldiers up, obviously wanting to fight a war of attrition with his side! But in this way, Cao Cao's side is not having a good time! Guo Jia, Guo Jia, what do you want to do?

Han Fei didn't know that Cao Cao was not using Guo Jia's strategy, but Sima Yi's. Seeing that three days have passed, most of the underground pits have been dug up, and the excavated soil is piled up in three big tents, in order not to make Liu Beijun suspicious, these soil have been piled up in the big tents, and they have not been transported outside the camp at all.

Han Fei had been worried these days, but he had finally received some good news this morning. First of all, 1,000 crossbows and 20,000 crossbows and arrows have been built in the craftsman's camp. At the moment, they are still in a hurry, and they can make another 200 repeaters and 5,000 crossbows every day. Han Fei was overjoyed when he heard the news, and immediately ordered Zhang Fei to transfer a thousand archers to use repeater shooting to contact, and be sure to familiarize himself with the use of repeater as soon as possible. Because Han Fei's intuition told him that the war of attrition between the two sides would not go on forever. Cao Jun is almost at the point of being exhausted.

Another good news is that Liu Bei ordered Gao Ran to lead 5,000 men and horses to support him, and then he ordered Zhang He to set off with more than 10,000 men and horses, and also rushed to support his side. As long as he can hold on until these two teams arrive, Cao Cao will not want to take this giant deer city in his own hands. Of course, in addition to these, Ma Chao can now walk around on the ground, and the wound behind his back has basically healed, as long as he doesn't do particularly intense exercise, there won't be much of a problem. Seeing that everything was developing in a good place, the panic in Han Fei's heart could not be dissipated. He always felt that something bad was going to happen.

In this way, another day passed, and Xiahou Yuan and Sima Yi all came to the tunnel and waited for the news from inside. After some anxious waiting, Captain Touching Jin came back with a message, and he had already dug under the city wall. Sima Yi was overjoyed, and immediately ordered someone to rush to the camp overnight to tell Cao Cao that he knew.

Cao Cao was also very happy to learn the news, and he was afraid of long nights and dreams, so he immediately decided to start attacking Xicheng early tomorrow morning. At the same time, it was ordered to Sima Yi, but they must hollow out the city wall at night.

So this night was sleepless, and several teams of soldiers went down the tunnel again and again, and did not stop until early in the morning, hollowing out a large area of soil under the city wall.

On this morning, Cao's army did not attack the city on both sides as usual, but pulled the catapult down to the west of the city. When the soldiers at the head of the city saw that it was not good, they immediately reported it to Han Fei to know. When Han Fei heard that there were three catapults, he immediately felt bad. He stopped the city of Dian Verden, and then told the soldiers at the head of the city to find their own hiding places, and everything else was to wait until the stone throwing was over.

As soon as this side was ready, the boulders smashed over, and as the boulders smashed on the western wall, the originally strong city wall actually shook. Han Fei, Dian Wei and the others were inside the city wall at the moment, and when they saw that the city wall was shaking, Han Fei was immediately shocked! He suddenly thought of a possibility, could it be that Cao Jun was going to collapse the city wall in the west?

Thinking of this, Han Fei didn't dare to hesitate, while sending people to arrange for the houses on both sides of the crossbowmen to stand by, and at the same time sending people to the head of the city to ask the soldiers to withdraw from the city first. As a result, before the messenger ran to the top of the city, he heard a loud bang, and a huge boulder hit the swaying city wall, and the huge city wall was instantly smashed and collapsed! The soldiers of the city, who had no time to hide, were all buried under Wally.