Cao Yun and Murong Yanzhao hadn't really seen the speed of the wolf either, they just thought that the wolf was slightly faster than the speed of ordinary horses. And they don't know that Liu Chengyou's target is not Guo Xin alone, in addition to him, Zhao Kuangyin also has a Red Emperor True Yuan in his body, as long as he can get three Red Emperor True Yuan, Liu Chengyou must make great progress in martial arts, and Cao Yun may not be his opponent at that time.

Liu Chengyou's martial arts are passed down by Guo Wei himself, Guo Wei can be said to be dedicated, and he has already trained Liu Chengyou very well. It's just that Liu Chengyou was content with pleasure and neglected his practice, so much so that he wasted his martial arts. But if it is supported by external forces, Liu Chengyou's martial arts will definitely go to the next level.

Therefore, Liu Chengyou very much hopes to get the Red Emperor Zhenyuan in Guo Xin's body, and Liu Chengyou is also afraid of it anyway. But if Liu Chengyou is allowed to get more Red Emperor Zhenyuan, his martial arts will inevitably improve greatly, and I am really worried that he will become the second Guo Wei.

Cao Yun's method can't be used, just if Guo Xin is sent away, it can't stop Liu Chengyou from continuing to attack the city, and he doesn't dare to guarantee that Guo Xin will be able to escape, so he has to think of other ways.

The siege could not be continued, the soldiers could not bear such psychological pressure, after all, this time it was a civil war, and it was not that the foreign enemy could not make the soldiers sacrifice their lives to sprint towards the city tower.

"Don't think about it, if you can think of a way, wouldn't you have used it a long time ago?" Cao Bin smiled: "Since you two have no way, then it is better to try my method may or may not be useful." Immediately sent someone to ask Murong Yanchao, the king of Yan, to bring troops to Tongguan. Murong Yanchao is better than Liu Chengyou, after all, Rong Ma has been playing with power all his life, although he used to like to play with power, but now Murong Yanchao is much better, and he is dedicated to the Han River, he will definitely bring a large number of horses to Tongguan, and Liu Chengyou will have to look at his face when the time comes. ”

Murong Yanzhao gritted his teeth and said, "That's right, one trouble is not easy to solve, and it's not bad for us to find another bigger trouble." Murong Yanchao can finally listen to our words, Liu Chengyou is completely a straw bag, he doesn't know how to fight at all, he has to pretend to be an expert, and he doesn't like to listen to a few words. After all, he is a king, we are ministers, it is useless to talk to him, Murong Yanchao is a minister like us, but he can manage Liu Chengyou, this method is very good. ”

"We can't control Liu Chengyou, so we can chat with Murong Yanchao for a few words without groveling, this is a discussion. However......" Cao Yun said: "I don't understand one thing, if Murong Yanchao comes, then Tongguan may not be able to hold it, aren't you afraid of offending Guo Wei and Zong Xin by doing so?" We have to think about the future now, don't say I'm selfish, I just don't want to offend anyone." Anyway, in my opinion, Guo Wei can replace Liu Chengyou to establish a new dynasty this time, if we kill Chai Rong and Guo Xin...... I'm afraid that Guo Wei won't let us go easily when the time comes. ”

Cao Yun said: "Dad, don't worry, it's not for nothing that I dare to say this." Why did Liu Chengyou want to capture Tongguan? And why did he only send Murong Yanzhao to attack Tongguan alone? In fact, the reason is very simple, people with military power in the world think the same as us, thinking that this time Guo Wei may be able to succeed, and the victory rate is very high, and Liu Chengyou has done these things are really difficult to convince the public, most of these people with military power do not want to listen to him, and even Liu Chong, the king of Zhendong, is on Guo Wei's side, do you say that Liu Chengyou does not have much military power in his hands?

Murong Yanzhao and Cao Yun nodded one after another, Cao Bin's analysis was right, if more troops could be sent over to attack from all sides in such a difficult situation, Tongguan would have been broken a long time ago. The reason why Liu Chengyou repeatedly shirked was not because he didn't want to, but because he couldn't, and it could be heard from his words that he couldn't control those who had military power.

But this is also a matter of course, how many people with military power recognize Guo Wei, if Guo Wei asks them to send troops, these people dare not say anything, although Liu Chengyou is the current emperor, but these people don't want to give him face. Because he really treated Guo Wei too badly, who can guarantee that he will not be the second Guo Wei.

Cao Yun said: "In fact, as long as the river festival makes you rebel immediately, Liu Chengyou has no way to take you, and he has no extra military power." Although Liu Chengyou was stupid, he was not stupid, and he actually brought several thousand cavalry to attack Tongguan, what was the use of these cavalry? Could it be that he directly let the horses hit the city wall? Liu Chengyou is now alone, so he must prove to the people of the world that he is stronger than Guo Wei, and he will personally drive the expedition to capture Tongguan, and this may make those who hold military power change their minds. ”

"Since Liu Chengyou's situation is in crisis now, why did you bring King Yan here?" Murong Yanzhao didn't understand, everyone hoped that Liu Chengyou would be defeated, why did Cao Bin deliberately find someone who could help Liu Chengyou come over? Moreover, King Yan's martial arts are unfathomable, and he may be able to change the situation of the battle with his strong troops.

Cao Bin said: "I have also considered the risk of inviting King Yan, but if you don't invite him, the risk will only be greater." Yan went to the southeast of Dahan and bordered Datang. What would King Yan do if he had a heavy army and knew that Liu Chengyou had been forced to abdicate by Guo Wei? If he took all his generals to join the Tang Dynasty, the threat would be too great for us. deliberately called King Yan to the hinterland of the Central Plains, when he wanted to, he couldn't run away, not to mention that if he defeated Guo Wei, there would not be many troops to dominate by then, it was not difficult for him to take refuge in Datang, but if he wanted to take all the generals to join Datang...... It depends on whether those generals will give this face. ”

"Good...... You can say that again. Cao Yun said: "It is worthy of being my son, more despicable and shameless than me." There are too many benefits to doing this, and if you think about it carefully, you must find King Yan and let him suffer this defeat, otherwise there will be endless troubles. It's just that...... It's also a trouble to find him, and when the time comes, everyone will act at the opportunity and don't leak the news. ”

Murong Yanzhao and Cao Bin nodded at the same time, of course they wouldn't leak the news, because it was related to their own lives, who would be stupid enough to publicize this matter?

Cao Bin said: "One last thing...... Murong Yanzhao, are you and Murong Yanchao related, why are your names so similar?"

"Coincidentally...... Murong Yanzhao said embarrassedly: "That...... King Yan's real name is not Murong Yanchao, he is Liu Zhiyuan's half-brother, not surnamed Liu, but surnamed Yan, his real name is Yan Chao. Later, I didn't know why he changed his name to Murong Yanchao, and his nickname on the rivers and lakes was Yan Kunlun, which had nothing to do with my Murong family. ”

In fact, the three of them were a little worried in their hearts, because Murong Yanchao was not easy to offend, and the most powerful person in the entire Han Dynasty except Guo Wei should be Murong Yanchao. His martial arts are slightly inferior to Guo Wei, and his art of war is slightly insufficient, but Murong Yanchao's resourcefulness is actually better than Guo Wei's, and Guo Wei is far inferior to Murong Yanchao when he plays power tricks and intrigues.

If Murong Yanchao is invited to Tongguan, I am really worried that Chai Rong and Zhao Kuangyin will not be able to hold it.

Murong Yanchao followed Liu Zhiyuan all his life, and he was a fierce general in his own right, and his martial arts far surpassed Liu Zhiyuan. At the beginning, Liu Zhiyuan's brothers had their own division of labor to fight the world, Liu Zhiyuan was responsible for overall development and tactical coordination as the boss, Liu Chong, the second brother, was responsible for raising funds and recruiting troops, and the third was responsible for fighting.

In the end, the eldest Liu Zhiyuan won the country, ascended the throne and became the emperor, the second was named the king of Zhendong, and the third was named the king of Yan. In fact, the relationship between the three brothers was quite good at that time, but Liu Zhiyuan died less than a year after he ascended the throne, and Liu Chengyou succeeded to the throne, and the relationship between Liu Chong and Murong Yanchao was estranged.

Now that Liu Chong supports Guo Wei's counterattack on the Han Dynasty, he must have an idea, and he must hope to ascend the throne and claim the emperor and monopolize power. I always thought that the most loyal King Zhendong rebelled, and the other one who had been playing tricks became a loyal minister.

It's just that Liu Chengyou doesn't know these things yet, as an emperor, as long as his subordinates shut up, the emperor is like a blind and deaf person, completely ignorant of the situation in the world. Looking at this situation, Murong Yanzhao and Cao Yun's father and son also knew that everyone didn't want to see someone like Liu Chengyou as the emperor, and many people had secretly contacted Guo Wei, so the matter of Guo Wei's rebellion had not reached Liu Chengyou's ears so far.

Inviting Murong Yanchao to Tongguan is a risky move, but it is also the key to victory. Otherwise, after Guo Wei defeats Liu Chengyou, if Murong Yanchao takes all the forces to join the Tang Dynasty, the impact on the Han will be very huge, and it is even possible to combine the strength of the Tang Dynasty to counterattack, and Guo Wei may not be able to withstand it at that time, so it is best to invite him to Tongguan and let Guo Wei defeat Murong Yanchao here.

"Then it's okay...... Murong Yanzhao said: "Cao Bin, since this method is what you came up with, how about you do it?" General Cao and I can't leave the barracks for the time being, so as not to let Liu Chengyou come to him." ”

Cao Bin sighed: "Alas~ I came up with the solution, but I had to run errands by myself." However, I really don't feel at ease that this matter will be handed over to a small soldier, and I must go to Xuzhou in person. Dad, you should also pay attention to it, just command the battle, don't charge into battle, swords and guns have no eyes. ”

"Don't worry, I'm very afraid of death. ”

"That'...... Without further ado, I set off at once. Cao Bin immediately left the tent, and then found a good horse and went directly to Xuzhou.

Cao Yun and Murong Yanzhao sat in the tent and stared dryly, they had nothing to say, and they didn't know what to do. It is really upset to meet a lord like Liu Chengyou, today two thousand soldiers died, and more than a thousand people were wounded, only some soldiers barely climbed up the battlements, although the archers on the side can also cause some casualties, but the lethality of shooting from a low place is insufficient, and the other side also has the protection of shields and battlements, I believe that the number of enemy casualties is very small, and it seems that it must not be attacked.

In fact, they had known for a long time that they couldn't attack it, but they didn't expect it to be so difficult. It is no wonder that Guo Wei took more than a year to capture Tongguan, and Li Shouzhen is not a military wizard, but with the danger of Tongguan, Guo Wei did not dare to attack. So building a fortress outside Tongguan is a very good method, as long as the two sides are on the same level, Tongguan has no advantage, so Li Shouzhen must go out of the city to demolish the fortress, but these fortresses are just tofu scum projects, and Guo Wei's trick is just to lure the snake out of the hole.