Helanlu shook his head a little disbelief: "How can the tunnels dug by the Jin army be used for us? Isn't there a city foundation under this city wall? It's just to prevent them from attacking the tunnel."

Gongsun Wulou smiled proudly and said, "They dug from outside. I don't know how deep the city foundation is, so they naturally cannot dig it. But we have inner trenches under the city walls in this city. At that time, dig in the inner trenches towards the tunnels they dug out. Then, as long as a hole as big as an authentic tunnel on the city foundation, will it be connected with the tunnels they dug to attack us?"

Helanlu opened his eyes wide: "Is this okay? But even if your plan is feasible, one or two hundred people can be out in half an hour or so. Even if there are four or five tunnels leading to Jinying, we will have more than a thousand people, which means we will deliver vegetables to others. How could it be successful?"

Gongsun Wulou curled his lips: "Well, we need to cooperate on both sides. The authentic people who leave the city do not need to conquer the enemy camp, but as long as they can set fire, clamor, and create chaos in the camp, we can take the opportunity to rush out of the city gate. Even if the black robe has a chance, we will take the opportunity to attack. At that time, we can take the opportunity to attack with the black robe's armored cavalry and break through from another direction. As long as you, more than 10,000 troops can successfully rush out, and when you come back, our opportunity will come. In fact, I have some contact with some Han tribes in the Northern Wei Dynasty. If you are willing to return to the Northern Wei Dynasty, you will not lose the position of kings, generals and ministers."

Helanlu frowned: "I have a deep feud between the Northern Wei Dynasty. Tuoba Si slaughtered my tribe and seized my tribe, causing me to wander around the world, and even killed my nephew. My sister almost died. I also betrayed Tuoba Si and almost caused other countries to destroy their families. Can he tolerate such a deep feud?"

Gongsun Wulou smiled and waved his hand: "At this time, then, at that time, it is Tuoba Si who has hatred for you. He is already dead, and it is Helanmin and Tuoba Shao who killed him, not you. As long as you can go to Hebei by yourself without bringing Helanmin with you, there will be room for a turn around. Just like when Nanyan took you in to deal with the Northern Wei, the Northern Wei was actually afraid that Liu Yu would take the opportunity to destroy Nanyan, and lead the Han tribes in Hebei and directly attack the Central Plains of the Northern Wei."

"After all, in his later years, Tuoba Si slaughtered this and that, but everyone in Hebei's Han tribe was in danger. At this time, the military power of the Northern Wei Dynasty was mainly suppressing rebellions and maintaining stability on the grasslands, but if you can't take action, you will attack the Central Plains again. If you can push the previous rebellion to the instigation of the black robe, then Tuoba Si and An Tong, the Northern Wei monarchs and ministers, would probably go down and give you a title, let you guard the south and isolate the Jin army."

Helanlu frowned: "Will they really believe me?"

Gongsun Wulou smiled slightly: "When you are unable to conquer and destroy, but you take the initiative to surrender. In this chaotic world, no one will win over and use it first. Even if you have to take action, it will be a matter of the future. We just want to fight for this time. Now the power of Wei cannot control Hebei. You cannot seize the territory of Nanyan, prevent Liu Yu's pursuit, and retreat, and you cannot appease the local tribes in Hebei. With you here to be loyal to the Northern Wei, at least they can accept it for the time being. While the Northern Wei continues to conquer the grasslands, you can conquer the remaining Hu people who have been dispersed here, or connect with Northern Yan, thinking that helping is better than waiting to die in this lonely city."

Helanlu curled his lips and said, "Then do you know where there is an authenticity that can go out of the city to fight back?"

Gongsun Wulou nodded quickly and said, "This is natural, otherwise I will tell you what I do. I came from Dongcheng. I know the most. However, even the positions where the Jin army dug tunnels, I understand that Yesu should be guarding the gate there now. We just need to find an opportunity to go there. I have a black-robed token, and I can fake orders and ask him to cooperate with us to dig holes. Then let him take his men to attack first. If he successfully rushes into Jin camp, we will follow up, or simply open the city gate from another place and rush out. As long as he can break the long encirclement of the Jin army and rush out of Guanggu, then no one can stop us."

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Helanlu said in a deep voice: "Do you think the black robe is a dead person? How could he not see these actions? Now he is at the inner city, and our every move is in his eyes. Even if you and I are talking to you here like this, he can see..."

Gongsun Wulou smiled and said, "His eyes will pay attention to those places where the battle is fierce, and it is impossible to cover everything. In Dongcheng, deep trenches were dug under the city wall to prevent the enemy's crypt from entering. How could he see clearly when the people in this trench continued to dig holes outwards? And if it was night, it would be even darker if it was not lighted the torch, and he would not know that it would attack from the tunnel."

Speaking of this, he curled his lips: "As long as the Jin camp in Dongcheng breaks through, the Jin army will be in chaos. We can take the opportunity to fight out from other directions. Heibou may also send out armored cavalry to break through. At this time..."

Before he finished speaking, he suddenly heard a hustle and bustle sound from the direction of the ghost wall, and came with the wind: "No, the Jin army is here to attack the city again!"

Helanlu and Gongsun Wulou's faces changed at the same time, and they looked in the direction of the ghost wall. They saw that from the Jin army formation, about three hundred steps away from the city wall, a large number of soldiers gathered at some point, with more than 500 people, lightly packed, without armor. Each of them carried a sandbag and earth bag and rushed towards the black demon water that was still burning forty or fifty steps in front of the city wall.

The black smoke soared into the sky blocked the view. Even at the top of the city, it was only about fifty steps across the ghost wall. No matter how far it was, you could only see a shadow. Gongsun Wulou shook his head incredibly and said, "Crazy, are they crazy? That's the flame of the black demon water. Do you want to burn yourself when you rushed up like this?"

Helanlu's voice rang coldly: "Mr. Gongsun, if you use your little thoughts and apologies just now, you will not be so ignorant. The city gate under our feet has been breached by the Jin army before, but we burned the rushing carts of the Jin army to attack the city. Xiang Mi had used earth bags to cover the fire before and put out the fire ignited by these black demon waters, and could continue to attack the city gate. Do you actually think that by relying on dozens of barrels of black water, you can burn out the outside of the city and stop the attack of the Jin army forever? Now, you should understand why I am so angry at Helan's resignation without permission!"
Chapter completed!