On the ground, more than forty earth-type magicians scattered, surrounding one of the areas of the city. Just below this area is the location of the altar cave.

Seeing that all the mages were in place, Audrey drew out her sword and rushed to the sky. The powerful Dou Qi turned into a qi light, broke through her body and shot straight into the sky, shooting to a height of more than 30 meters, and suddenly exploded.

The light that burst out from the qi light is clearly visible even in broad daylight.

This is a signal. Seeing the light of the air, all the magicians who were ready to shine together released their magic power. The area they surrounded was twisted and deformed in the vibration. The roads and houses on the ground rumbled and collapsed, turning into ruins, the earth cracked, and the earth shook. Finally, the entire area collapsed and a huge deep pit collapsed.

At the top of the cave where the altar is located, it is more than 100 meters high from the ground. The weight of this more than 100 meters of soil is measured in billions of tons. In the face of absolute weight, even the most solid substance is as fragile as tofu.

The two batches of constructs located at the two entrances were the first to suffer. The cave wall collapsed and they were swept under the bottom like running water. Under the squeeze of huge force, these constructs were crushed like grains under stone mills, crushed to pieces.

A huge deep pit suddenly appeared in the Black Iron City, but the geology around the pit was not damaged much.

The rumbling sound of the collapse of the pit was stopped for a long time. The dust raised spread across half of the city, and the momentum of the city was spreading to the outside of the city, overwhelming the momentum of the barbarians' attack. Many barbarians looked into the city, looking at each other in a very curious manner.

The great chief Barcrov flew directly into the air and looked into the direction of the deep pit from afar, but could not see clearly what was going on.

Audrey sighed a long sigh, and the control tower was detecting the movements and stillnesses underground. At the last moment of collapse, the invading components had not left the scope of the cave. Now they were definitely buried in the soil. If hundreds of millions of tons of soil were pressed down, the iron balls could be pressed into iron discus. Unless a miracle happened, those components would be dead.

The most important thing is that the altar will definitely be destroyed, so that the plane connected to the altar will no longer be sent to invade the world.

Now things have come to an end, but when I look back, Audrey is still scared. The siege of the savages is not scary. In the fine weapons and armor forged by human steel, the strictly organized war machines, and the huge population base are there. These savages who cannot even wear clothes, wanting to capture the Black Iron City is a miracle.

Even if these barbarians have the shadow of human conspirators behind them, Audrey is still not afraid. Black Iron City has 700,000 humans, hundreds of years of history, and the potential for war is extremely deep. Even if they cannot drive away these barbarians, they can still drag them down, and to death.

However, the world connected by the plane passage of the altar is an unknown force. Audrey doesn't know how many people there are in that world, how far civilization has developed, and what kind of war abilities it has. The only thing that can be known is that five or six of these goblins driving a constituent body can make a great swordsman like her in a mess.

If there are thousands or ten thousand such components, the whole world will be in danger.

Even if you fight for Black Iron City, you must not let these enemies stand firm.

Although she knew that under such heavy pressure, there was no more survival, Audrey was still uneasy. She looked up and looked in the direction of the control tower. The collapse of the holes had stopped, and the detector should be able to detect the situation below.

Sure enough, in the direction of the control tower, a swordsman ran out quickly, flew directly into the air, and flew towards Audrey. However, the solemn expression on the swordsman's face gave Audrey a bad premonition.

"Reported, there is a huge hole under the mud layer in the collapsed place, and there is a strong life reaction there." The swordsman said in horror.

As soon as the swordsman finished speaking, the mud layer at the bottom of the pit suddenly exploded, and a huge amount of soil was lifted up, and now there was a red energy light below.

"No, it's the energy field of the altar, which blocks the soil." As soon as Audrey saw the energy light, she immediately realized what was going on. When the altar was running at full speed, thirty-six energy columns built a circle of energy barriers that could block the collapsed soil around.

The soil relies on its own heavy pressure to exert its power, rather than directly impacting the energy barrier. When most of the soil is blocked around, the downward pressure will be reduced by half. This means that all enemies within the energy barrier will be fine.

Sure enough, after a layer of soil on the surface was lifted away, a huge hole supported by the energy barrier was exposed. One after another, a series of mechanical components flew out of the hole.

One, two, three... more than fifty pieces flew out.

Audrey's face turned pale, more than she saw when she left. It was obviously from the plane passage later. There were barbarians invading outside and components rampant inside. Can Black Iron City be preserved?

Audrey felt that there were too many structural bodies, but the Goblin Captain had a completely different feeling, and their losses were huge. A team had 101 mechanical structural bodies, but now there were only more than fifty ones left, half of which were lost.

Generally speaking, 10% of the battle loss is enough to collapse the ordinary army. Those who can last until 30% of the battle loss are definitely the elite among the elite. But now, they have lost 50% before they even see the enemy. However, no one has collapsed, but they are in anger. The enemy does not defeat them head-on, but uses despicable means.

"Crash!" The energy barrier that supported the first wave of crushing mud layer finally couldn't bear it anymore and disappeared. The surrounding soil leaked inward like a flood that opened the gate, and it completely buried the altar underground in an instant.
Chapter completed!