The news that Danhan Mountain was occupied by Xianbei in Liaoxi has recently been transmitted to Huguan by the shadow of Zhang Liao's army, and after Zhao Yun learned of this, he just said "I know" very indifferently, and then he was busy climbing the gate tower to observe the East Road coalition army that was busy in the distance.

It is obvious from the clairvoyance that the actions of the Eastern Route Coalition Army are now more disciplined and efficient. These soldiers were busy carrying some stones and some earthen baskets from a distance to the two miles before Huguan, and it was not clear what their intentions were. But one thing is very clear, that is, it is definitely related to the attack on Huguan, which should be the idea of the coalition army adjusting the way of tackling key problems.

As early as five days ago, Zhu Jun returned to Linxian again with more than 100,000 Donglu coalition troops, and this time he chose to camp at a location that was much closer to Huguan than the last time, almost next to the camp under the remaining veins of Taihang Mountain near Linxian. In other words, this time there is almost no shelter between Huguan and the coalition camp, and it is difficult to have the last dragoon attack on the camp.

Zhu Jun fully adopted the suggestion of Li Zhi, a civil engineering expert, and first asked Yuan Shao to come forward and recruit nearly 100,000 conscripts in the Guangping area, enter the mountainous areas around Linxian County to mine stones, cut down trees and vines to make wooden baskets for storing soil and stones, and also made a large number of simple corpse throwing machines. At the same time, Zhu Jun selected some sturdy soldiers in the army who had been engaged in agriculture before, and every day they took some tools for digging the land and dug them up from a place behind the camp. The soldiers in charge of the excavation used the practice of working in shifts of three teams, so that people could rest and eat, but the progress of the excavation did not stop for a moment.

When everything was ready, Zhu Jun ordered the army to come two miles outside the pass and start the project of building a wall of earth in front of Zhao Yun. I saw a procession of snake-like men winding from the foot of the mountain to carry stones and wooden baskets on their shoulders to the front of Huguan, and then stacked the earth and stones neatly in a position where the bed, crossbow, and catapult could not attack. As time passed, the earthen wall, which had only reached knee height, had grown more than a foot tall in a matter of days.

At this time, if Zhao Yun still couldn't see Zhu Jun's calculations, he would have taken on the title of the main general of the town guard in vain. In fact, since he saw the Eastern Road coalition army busy carrying soil and stones in the clairvoyance, Zhao Yun realized that Zhu Jun might attack Huguan by piling up soil and leveling the city, but Zhao Yun didn't expect Zhu Jun's movement to be so big, and the actions of the coalition soldiers were so neat and effective.

There were only 6,000 soldiers guarding Huguan, and they were mainly crossbowmen and heavy infantry, so it was obviously impossible to go out of the city to attack. Since Zhu Jun dared to pile up an earthen wall in front of Zhao Yun, he must have made complete preparations. As long as Zhao Yun left the city with his soldiers, Zhu Jun could let Zhang He take 40,000 elite coalition troops to surround Zhao Yun. Without the cover of the wall, no matter how powerful the soldiers are, they will not be able to confront the 40,000 elite soldiers led by Zhang He under the pass, the key is that the number of guards is too small, and the types of troops are restricted.

Probably because he was afraid of turning off the large long-range attack weapon, Li Zhi's chosen filling location happened to be in a safe area, so the soldiers on the pass had to watch the coalition forces busy under the pass. When the vanguard sergeants guarding the pass saw the front of Huguan and actually piled up an earthen wall higher than Huguan, Zhu Jun's action continued. A large number of stone-throwing trucks hid behind the newly built earthen wall, and began to throw stones and earthen frames towards the position between the pot gate and the earthen wall. So the soldiers of the vanguard army watched as a second earthen wall appeared between the pot pass and the earthen wall.

In fact, what the vanguard of the gate did not know was that between the two earthen walls, there was now a wide underground passage. Coalition soldiers can reach the second earthen wall through the tunnels unscathed, without worrying about the thunderbolts and crossbows blaring overhead.

The situation has become more and more severe for the vanguard army guarding the pass. The second earthen wall was built taller, wider and thicker than the first, and its height was even more than a zhang higher than that of Huguan, and Zhu Jun still did not seem to have the intention of stopping, and was ready to continue to build the third earthen wall with the help of the earthen wall that had approached Huguan to a position of one mile. If this earthen wall is built, then the soldiers of both sides can stand on the head of the wall and shoot at each other, there is no difference in range between bows and crossbows, and large siege equipment such as catapults and bed crossbows can attack each other at will.

Under the land, the excavation project in charge of Li Zhi did not stop for a moment. In the process of excavation, as the passage became longer and longer, Li Zhi ordered people to dig up the ventilation holes and excavation openings vertically, and the soil and stones taken out of the ground were shot out by the rock-throwing truck. Now the coalition forces hiding under the second earthen wall can enter the underground passage smoothly through the excavation......

If this situation continues, the vanguard army will eventually have to engage in hand-to-hand combat with the coalition forces. However, the advanced weapons and equipment that could be relied on and relied on in the past are no longer useful. With 6,000 men against 100,000 people, how can you win unless it is steel and iron bones?

It was the first time for Zhao Yun to encounter such a thorny problem, and he didn't find a way to crack Zhu Jun's civil engineering work to attack Huguan for a few days. At this point, it seemed that it was only a matter of time before the pot was lost. With a solemn face, Zhao Yun saw that the coalition forces had begun to pile up the third earthen wall, and his heart was anxious. "There are a large number of coalition troops, and now they have recruited so many people to help carry soil and stones and make equipment, Zhu Jun has completely laid out the means, but he has no way to ...... it."

Thinking of the large number of coalition troops and the large number of people here, Zhao Yun's eyes suddenly lit up, and he thought of a way to retreat. Zhao Yun hurriedly summoned Hua Weiguo and whispered a few words in a low voice, only to hear Hua Weiguo's eyes wide open, looking very shocked. Hua Weiguo received Zhao Yun's urgent order, immediately galloped to Xiaguan, rode a nimble horse, and marched towards Crouching Tiger City.

Zhu Jun, who was standing on the first earthen wall, recently looked at the defenders on the pot in the distance and was anxious like ants on a hot pot, but unfortunately there was nothing to do with the people and allied soldiers hiding behind the second earthen wall.

Zhu Jun then personally went down to the tunnel, praised Li Zhixian's strategy, and promised that the capture of Huguan in the coming day would be the first contribution to Li Zhiji. Li Zhi, who received Zhu Jun's encouragement and praise, became more and more energetic, and commanded his soldiers to dig tunnels desperately.