Unexpectedly, after the Han army captured the third line of defense, it did not launch any offensive on the fourth line of defense for five consecutive days. Apart from sending people outside the city to observe on a daily basis, there was no substantial offensive move. At first, the defenders of the fourth line of defense thought that the Han army planned to repeat the old trick and continue to dig tunnels, but the troops who had been listening to the information ahead with their ears underground reported that the underground was so quiet that there was no sound of the other side digging tunnels.

This is strange, the Han army will not give up the attack on them, so the Han army has no action is more terrible than having action. The news reached Peishan City, and the Huns in Peishan City couldn't figure it out. King Zuo Xian shook his head, "Now I was really led by the nose by the Han people." Faced with this situation, King Youxian was puzzled, "Can we turn the passive into the active and take the initiative to attack the Han people?" As soon as this plan came out, it was questioned by many people, because of their passive defense at the moment, in fact, they no longer knew how many Han troops were coming, and they didn't know where they were stationed. Even Kemoor, who was extremely heavy on the psychology of gamblers, gave up his support for this plan, because he was already afraid, and he was now eager to hold these three lines of defense with all his might, and the Han army had better disappear all.

In the face of the passive defense of the Huns, the Han army was finding another way, Gao Zheng knew that he had broken through the two lines of defense with a strange trick, and if he broke it again, it would only slow down the process. It is only right that these lines of defense must be directly knocked down by a strong deterrent. So Gao Zheng came up with a very whimsical strategy, which was to directly bypass the three lines of defense, set up a card channel between the three lines of defense, and cut off the interconnection of the three lines. Let them be trapped in the fear of being isolated. As a subordinate army without faith, once you know that you have no hope of winning, you will naturally surrender obediently.

As soon as this plan came out, it was also a shock within the Han army, because most of the generals thought that they were already fast enough to attack the right way. There is no need to do such a risky thing, but Gao Zhong is the main general, and when many generals were still children, Gao Zheng had already led the high-priced army to gallop in Mobei, and Gao Zheng's persistence was also affirmed by the emperor. After all, the expedition still consumes national strength, and now Gao Zheng has put forward a good plan, which is reasonable and reasonable, and the emperor supports it.

So almost all of the Han army was preparing wooden planks, which were the timber they needed to build a temporary phalanx overnight. For several days, the Han army worked on the planks during the day, and at night began to distribute the various troops to begin their detour to the perimeter of the defensive line.

In this way, by the night of the tenth day, all the Han troops had been put into place, and the Han army was divided into three divisions, each with more than 20,000 men with countless planks rushing out of the night, and building their own temporary camps between the defense lines. Wooden planks were erected, and camps rose from the ground. At sunrise in the east, the banner embroidered with red and gold characters flutters in the wind, and the Chinese characters shine brightly in the sun. The Han army beat drums and drills as usual, but in fact, they were acting for the Huns to scare the Huns.

Sure enough, the Huns got up early in the morning and found that the Han army was actually building a camp and cultivating the road, and the terrible thing was that suddenly overnight, a complete camp rose from the ground. The guards immediately sent people to Pei Shan City to deliver the letter, but the terrible thing was that none of the messengers reached Pei Shan, and the main road was already the camp of the Han army.

So the Han army began to surrender to them, and the first thing to surrender was not the fourth line of defense, but the fifth line of defense. The surrender of the Han army was very simple: "I know that you are not Huns, but the Huns have captured you and asked you to work for them, you have thousands of people, and there are only dozens of Huns supervising the battle team. As long as you open the city gate, the Han army promises that the past will not be blamed, if not, the day the city is broken, the time of slaughter!"

The persuasion to surrender, the scene of ambushes on all sides, and the compact sound of war drums were all things that those timid Hu Congjun had never encountered. They don't understand the big truth that Han Jun said, and they don't want to understand it, the only thing that says is that they have so many people, and now that Han Jun is outside, as long as they escape, they don't have to die, and they must die if they stay inside!

Most of the people were talking about whether to surrender or not, and the Huns also knew that there was danger now, and they had to use their steel knives to establish their prestige, so they did not hesitate to cut off a person, and high-speed them, "Don't think of any ghost ideas!"

This move was indeed a threat to some people, but fortunately, the Han people did not immediately attack the city, they immediately admitted it after a moment's instigation, and did not immediately take any drastic action. And the Han army did not hurry up to attack the city after being persuaded to surrender, but retreated. The Han soldiers thought that they were taking advantage of the situation to attack the city, but they never thought that Gao Zheng would retreat. Gao Zheng actually planned to surround the city for ten days and a half months, and persuade him to surrender every day, then the pressure would all be transferred to those Huns, on the one hand, they had to face the floating military spirit, they could only stabilize the military spirit by killing people, but in this case, killing people would only lead to the final accumulation of difficult returns, according to Gao Zheng's expectations, it was best to mutiny in the city, so that the Han army could capture the city effortlessly. After this explanation, Gao Zheng's plan cannot be poisonous. So the Han army worked hard every day to encourage the soldiers in the city to rebel, and the leader of the Hun army began to panic every day, one to prevent the Han army from attacking the city, and the other to prevent the soldiers from changing, and the more and more sensitive guards began to become more and more irritable, and the distrust brought by the rage made the guards begin to kill people wantonly, one today, five tomorrow.

The soldiers began to become afraid, they were afraid that if they were next door today, would it be their turn to die tomorrow? The oppression of fear will eventually lead to degeneration, and even if there is no idea of mutiny, this idea is generated in the process of oppression. Because they finally have a resistance mentality, "Instead of not knowing how to be killed by the Huns, it is better to really open the city gate and call the Han army to come in, we may still have a chance to live"

Today, the Hun guards killed a few more people, but those few people were innocent, but the sword had no eyes, but they couldn't control so much. They had no choice, and more and more soldiers began to communicate in code, and more and more soldiers chose to join the group that they didn't know who started it, waiting for the opportunity to defect out of the city.