The unconventional tactics of digging tunnels are not applicable at all times.

Even during a war in the main city, it depends on whether the local geographical environment is suitable for this method.

Otherwise, if tunnels are dug directly from the inner city like Tianyuan City, if the soil is softer and only supported by wooden piles, it may be difficult to support the city wall.

Moreover, on the frontal battlefield facing the city gate, there is either a moat as a barrier, or trees on both sides of the official road. It is difficult to dig out a tunnel and prevent the enemy from seeing any flaws on the surface.

And also because of the city wall, the tunnel must be dug deeper and supported by a sufficiently wide layer of ground to prevent the city wall from collapsing. If you are not careful, it is very likely that the tunnel will not reach the enemy, but will cause the city wall to collapse.

It collapsed directly. This kind of stupid thing makes loved ones angry and enemies happy.

Therefore, under normal circumstances, tunnel traps are generally not a conventional tactic considered by the defending coach.

But Tianyuan City is not like that.

Tianyuan City was not built on a major traffic road. In order to make way for the troop transportation channel, the city was moved to the side. This made the space outside the city extremely open and empty, without trees blocking it.

And Ouyang Lixing was also very smart. He did not hesitate to spend a lot of effort to dig tunnels, but they were only at both ends of the city wall, which would not easily become the focus of the enemy's attack.

Because he knew very well that with Zheng Yuanyun's sophistication, he would not fail to be aware of some of the most basic common sense. For example, before the army launches a charge at the city gate, there must be engineers to detect the terrain first to ensure the advance.

There are no ambushes on the road.

Another point is that even if a tunnel is dug at the main city gate, it can only block a small part of the enemy army. Don't forget, the defenders cannot stop the enemy from attacking the city with tunnels alone. They also can

It will also launch intensive large-scale destructive attacks such as throwing stones.

The stones thrown by the trebuchet are very heavy!

When the weight accumulates to a certain level, even before the enemy's large forces step into the trap, you have to expose the tunnel you finally dug. In this way, how can the opponent be willing to fall for the trap?

Compared with the huge amount of investment in the project, it is very unnecessary if it can only affect a small part of the enemy's army, or even a small team that has no impact on the enemy's strength.

Therefore, what Ouyang Lixing ordered people to dig was the two ends of the city wall that would not normally be the focus of attacks.

Digging a tunnel here is unlikely to occur to the other party. Secondly, the tunnel is about twenty meters deep into the ground. Even if there are engineering soldiers to explore in advance, it is impossible to easily find out that the bottom is actually empty.

A fact.

Zheng Yuanyun sent 400,000 troops to both sides, divided into two sides, with 200,000 troops on one side.

This amount, and the Tianyuan City top did not release the trebuchet fire, it means that if you want to make the ground collapse, you have to rely solely on the weight of the soldiers themselves.

So this is why Ouyang Lixing had been waiting for enough soldiers to enter the trap range before ordering to pull off the wooden stakes that had been tied up in advance. The result happened to be one step faster than Zheng Yuanyun's order, allowing the soldiers of the Qingyang Empire to

Without any precautions and no time to change their formation, most of the soldiers were sucked into the ground. They were lucky enough not to step into a small part of the sinking area. They stared blankly at the ground not far from their feet.

The deep pit trembled.

What's in there?

Broken leg and arm?

No, there is no way to tell which one is the stump and which one is the broken arm.

The bottom of the pit was densely packed, with layers upon layers of people squeezing their brothers. People were pressing each other, and people were squeezing each other. Occasionally, one or two rams rolled through the crowd. The huge weight made people even scream in pain.

When they didn't arrive, they all became silent.

This is simply a mass grave!

No, 100,000 people!

The smell of blood rose into the sky, along with the smell of feces, urine, and the sour smell of vomit, mixed together, and penetrated into the nostrils of the soldiers who were lucky enough to survive.

What you see with your eyes, what you hear with your ears, and what you smell in your nose, when these three items are added together, no matter how iron-blooded or ruthless a person is, a feeling of nausea will rush straight into his throat at this moment, and he will squat on the ground.

There are many people who vomit loudly.

Even Zhu Yan's soldiers at the top of Tianyuan City didn't feel any joy in their hearts when they saw this scene that was like a purgatory on earth. Some of the soldiers with poor mental endurance simply fell down.

They also vomited outside the city.

Of course, Ouyang Lixing was not among those who vomited.

The success of the strategy did not make him show any signs of madness. He just gave the second order calmly and indifferently - attack!

How could there be no defenders at both ends of the city wall?

There are defenders, which means there are trebuchets and archers. Although there will be fewer than at the main city gate, there are definitely many.

Ouyang Lixing would not be so kind at this time, and let go of the almost stunned Qingyang soldiers outside the city, and even the 100,000 people in the pit. Although the situation was miserable at the moment, he could only hear the miserable screams in the pit.

We also know that the number of soldiers killed in battle is far less than it seems on the surface.

So, attack!

The enemy soldiers who did not step into the traps towards the periphery also fell into the two huge pits!

boom!

The trebuchets hidden on both sides of the city wall finally roared at this time, and huge boulders burning with flames were thrown into the air, and then they roared in like meteorites from the sky and smashed down!

Faced with the sudden attack, the soldiers on the periphery were better off. Those who responded quickly did not bother to vomit anymore, and ran back while pulling their comrades beside them.

But those in the pit, those who are pressed under others, or those at the top who are trying to climb up, their luck is not so good.

A large part of the shells fired by the trebuchet are accurately thrown into the pit. There is no specific position in the pit, only the two large pits are required. For such a large target, even if Ouyang Lixing throws stones

The mechanized troops don't know Chen Ze's slinging method of using coordinates to determine precise directions, so there's absolutely no chance they'll miss.

I saw two meteor showers falling from the sky, one on the left and one on the right, falling crazily at both ends of Tianyuan City. The flames were blazing in the two large pits. As the meteors fell, you could even see incomplete figures being killed.

It was so smashed that it flew up, and then fell heavily again.

The two large pits have turned into two huge furnaces at this time, but what is burning in these furnaces is...

All human lives!

Zheng Yuanyun's eyes were about to burst, and even his breathing seemed to have stopped for a moment. There were a total of 400,000 troops on the left and right, and the total number of people who could escape this catastrophe was probably less than 100,000.
Chapter completed!