Chapter 420

Zheng Yuanyun is looking at the teams on both sides.

The left side will be faster, but the right side is not much slower. The impact hammers on both sides can almost hit the wall at the same time.

Until now, there is still no response on the head of Tianyuan city.

Do they really not see it, or are they very confident in their new city wall and think that there is no problem to bear several impact hammers?

But what about the ladder?

Zheng Yuanyun frowned.

If you want to attack the city, you can't just break the city gate or wall and rush into the road. The ladder is also a key siege instrument.

Through the ladder, the soldiers can directly climb to the city wall when they rush under the city wall. Although the city guard can also deal with it by overturning the ladder or pouring oil and beating wood, there will be a lot of ladder that can't stand, and it's inevitable to miss something.

Once a soldier ascends the city, it will lead to a chain effect. In order to deal with the climbing enemy, the defenders have to allocate manpower, so the control over the other ladders will be weakened, and finally more and more enemy troops will ascend the city.

In addition, in order to deal with the ladder, the impact hammer can exert great power below. Although there are many defenders at the head of the city, they can't compare with the enemy spread under the city in the same area. It can be said that if they can take care of the head, they can't take care of the tail.

Doesn't the other party understand this truth?

Zheng Yuanyun watched as his soldiers rushed closer and closer, but his uneasy premonition became stronger and stronger.

Will the other side not see the crisis on both sides?

Then they have to be blind and deaf!

Zheng Yuanyun didn't mean to let the troops on both sides sneak. Besides, they had a panoramic view at the head of the city. How could they sneak?

On the contrary, after seeing the tragedy of the Middle Road, the soldiers under him not only did not shrink back, but aroused the blood and gas experienced along the way. With that order to attack, a total of 400000 troops on both sides roared, and the momentum of the charge was like a rainbow.

Unless the whole Tianyuan city is full of blind people and deaf mutes.

So

Zheng Yuanyun's original intention of sending these two troops was to test how many troops Ouyang had buried in Tianyuan city.

But isn't it strange that the other side has been indifferent to the attacks on both sides?

"Send orders..."

For the sake of safety, Zheng Yuanyun doesn't want to lose more troops. He is preparing to order the messenger soldiers to inform the troops on both sides to change their formation and use the front arrow array as a test. In case the other party has a plot, he will lose less troops.

However, at this time, almost at the same time, the city head of Tianyuan was secretly observing the situation on the left and right sides, but he saw that the charge of the troops on both sides was almost the same, and Ouyang was not greedy. He turned back and rushed to the messenger soldiers and said, "give orders, OK, let's start both sides together."

The messenger had been waiting for this moment. When he heard that his face was suddenly happy, he was excited and threw a black flag under the inner city.

This is the signal they set in advance. The black flag is thrown down the inner city, which means

Under the city!

This city is not relative to the city at the head of the city, but underground!

Ouyang acted vigorously. After he realized that Xilong city might not last long, he immediately decided to order all soldiers to travel day and night, and then force their way regardless of their own tired division.

Finally, it saved at least half a month than the original plan and arrived at Tianyuan city.

Therefore, there is enough time for Ouyang to strictly arrange defense.

In the past half a month, Ouyang not only ordered the soldiers to strengthen the city wall, but also secretly dug tunnels.

This tunnel has a huge amount of work. It is dug from the inner city to the outside. It is deep and long. It is dug directly from below the city wall to the outside of the city.

The tunnel is aimed at the correct sides outside the city wall. Ouyang ordered the engineers to go deep into the ground for 20 meters and then dig out. Every few meters, they will be fixed with wooden piles to ensure that the city wall will not collapse.

The same is true outside the city, but after digging outside the city, the tunnel was expanded, and a large square was dug almost underground. The square was also supported with thick wooden piles every few meters for fixation.

The difference is that all the wooden piles under the ground outside the city are linked by a specially made super long iron chain.

This iron chain has been extended to the underground of the inner city, controlled by more than 10000 engineers, waiting for Ouyang to give instructions.

Then now, the long-awaited instructions have finally arrived!

On both sides of the city wall, the two engineering troops hidden under the inner city immediately shouted without hesitation, rose up, roared with all their strength, and tried their best to pull the two thick and strong iron chains.

Boom

Boom, boom

The soldiers of Qingyang Empire who were charging suddenly heard a dull noise from the ground, and there was an unusual fluctuation on the ground at this time.

The messenger, who was in charge of observing the flag in his own array, suddenly saw that Lord Zheng seemed to have new instructions.

The banner seems to be

The messenger soldier just recognized Zheng Yuanyun's new instruction and was about to report to the general in charge of commanding the assault team, but at this moment, the vibration under his feet suddenly became violent, and even

Boom!

The dull noise suddenly turned into a loud noise. The soldiers who had long felt something wrong were at a loss. They didn't know whether they should continue to rush forward. When they were still hesitant, suddenly, a considerable number of soldiers felt empty under their feet!

Collapsed!

Everyone was stunned and watched the ground collapse one by one, followed by countless soldiers screaming and falling into the ground with the collapsed ground.

Ladder?

Impact hammer?

At this time, it became a lethal weapon to crush our own soldiers, especially the extremely heavy impact hammer. After falling and sinking with the soldiers, I don't know how many people were pressed into meat sauce.

Boom!

Boom, boom!

The subsidence continues.

At this moment, Zheng Yuanyun felt dizzy. For a moment, he didn't know whether to look left or right.

On the left and right sides... All the earth is shaking and falling. The whole earth seems to be boiling. It is also like two wild beasts waking up from their deep sleep, opening their mouths and swallowing them madly.

Devour, is his elite troops!

Zheng Yuanyun's heart is dripping blood.

He didn't care about the soldier's life, but this kind of loss that had no loss to the other party made him very uncomfortable.

These soldiers are all elite soldiers!

Even if there will be a loss, it is an equivalent exchange with the other party.

In Zheng Yuanyun's ideal of equivalent exchange, at least one for two, or even three!

As a result, his 100000 stormtroopers on the front battlefield were about to be exhausted, and the collision troops on both sides didn't even use an arrow from the other side, so they disappeared in sight