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Feng Yu was typing while thinking about how to solve this passage to the underworld.

Regardless of whether the undead creatures are out to harvest souls or for other reasons, they have to come out. If they are not interested in the main material world, then they will not squeeze out.

If the undead don't push out, then this plane passage will have no impact on Cattail City.

So no matter what happens in the future, the problem now is to prevent the undead from running out and running into the wilderness to cause trouble for the residents of Cattail City.

Feng Yu was just thinking about it when the sound of the rumbling engine and the creaking of the tracks finally arrived.

Under the command of Feng Yu, the Jiaolu armored fighting vehicles replaced the soldiers, formed a new encirclement, and aimed the muzzles of the anti-aircraft guns and heavy machine guns at the Bone Gate.

The soldiers also retreated behind the Horned Deer armored fighting vehicle. They used the Horned Deer armored fighting vehicle as a cover to re-build their defense line. They mounted heavy weapons such as machine guns on the Horned Deer armored fighting vehicle to attack the undead from a high position.

This time, under Feng Yu's arrangement, he also changed his style of play, no longer staring at the undead inside the Bone Gate to eliminate them.

Instead, let the anti-aircraft guns aim at the Bone Gate to guard against higher-level enemies, and let the heavy machine guns and soldiers' large-caliber rifles eliminate the low-level undead running out of the basement exit one by one.

"Yes, let's fight like this. We don't want to kill them all, we just want to limit these undead creatures within this range and prevent them from breaking out of the encirclement.

Mobilize all the mobile armored divisions from Cattail City and form another layer of defense.

The soldiers from Cattail City mobilized a regiment, and the remaining two regiments were waiting for rotation and were responsible for the defense of the roof. "

The messenger who had already arrived recorded Feng Yu's order and turned around to make arrangements. Feng Yu found another messenger and asked him to call Ilia over.

The soldiers of Cattail City were still fighting. Illya was busy making arrangements and had no time to rest. When she heard her teacher was looking for her, she hurried over.

The senior officials of Cattail City who have now learned the news are all afraid, fearing that Cattail City cannot be defended. Although Illya is thoughtful, she is still a girl who leads the elves, so she is naturally a little panicked at this time.

"teacher."

"Well, come here and take a look, the current situation is that the Bone Gate in the underworld plane is half embedded in the ground, and the ground level is the same as our Soul Fire Research Laboratory.

Have you been to the Soul Fire Laboratory?"

Illya nodded: "Been there, we used the soul fire computer to calculate the data of some cities."

Feng Yu pointed to the front and said: "The width of the Soul Fire Laboratory is wider than the Gate of Bones. The walls on the left and right sides of the underground are at this location and beside the outer walls of the underground building.

The underground building was originally located on the right side of the underground laboratory to prevent the underground laboratory from being damaged when enemies destroyed the underground building.

As long as we dig out these two walls, heighten and reinforce them, and even add a ceiling, we can completely cover the plane passage inside.

Then we can extend this kind of building to our location to form a huge fortress, completely wrapping the plane passage inside.

Just the opposite of the fortress attacking outwards and attacking enemies on the outside, we want this fortress to attack inward and destroy the enemies inside that come out of the plane passage.

In this way, we can fully control this plane passage with the least amount of effort.

What you need to do now is to mobilize manpower as soon as possible to design and build a large fortress that can cover the plane gate, so that our warriors can safely destroy the enemies pouring out of the plane gate. "

Illya nodded, and Feng Yu continued: "About the characteristics of the plane gate and the fighting methods of undead creatures, Mr. Dempsey and I will tell you in detail later.

When you design the fortress, you must fully consider these factors and strive to minimize the danger to the Iron Soldiers and Cattail City. "

Illya was fine, and Dempsey was stunned.

"Can the undead still give us time to build?"

Illya explained: "Master, if the construction team of Cattail City works hard, we can build a large single-story fortress in less than half a month.

Of course, this is under the condition of ensuring construction safety. If it is normal times and we mobilize all the construction forces of Cattail City, it will only take a week. "

Feng Yu nodded and said: "The current quick-drying stone powder does not require such standard steel bar binding, and the construction speed is still very fast."

Dempsey was stunned. In less than half a month, a large fortress that could wrap up the gate of the plane sounded like a fantasy.

Demps said: "If we can really build a large fortress that can wrap the plane gate, then what does it mean if we keep fighting for half a month?

Anthony and I are still young, so if we take turns and add Darren and the warriors from Cattail City, there should be no problem. "

Feng Yu said: "Then let's do it. Illya, you go back and mobilize people to design the fortress. It must be as strong as possible.

There is also the internal structure. We must not only wrap the plane door, but also have enough safe internal space for the warriors to use to fight the undead inside.

Ventilation and purification of the air inside the fort must even be taken into consideration.

We must know that the undead have means of plague attack. We cannot simply let the air in the fortress be directly discharged into Cattail City. "

"I see, teacher."

"You immediately start preparing construction materials and mobilizing workers. Uncle Xingjin and I will discuss the soldiers' defense plan.

By the way, send a message to the Dharma Saint Cromwell in my name and ask him to come over to help with the defense. Doesn’t the Dharma Saint take it as his own duty to protect the natives of the Gerien continent, so let him come over and help.

Also, the construction of our fortress cannot delay the Lengshui River interception and power generation project. The Lengshui River was finally intercepted, and the dam construction of the predetermined height must be completed in one go.

As for the generator part, we can take our time. Anyway, our generator is not in the dam body, and there will be plenty of time for construction in the future.

Finally, there is the problem of the residents of Cattail City. The less important production work will be temporarily stopped and the manpower will be allocated to the construction of the sub-base in the Snow Summit Mountains, so as to stay away from the threat of the dimensional passage here. "

Demps felt dizzy after hearing this. He originally thought that Feng Yu and Ilia's management of Cattail City was already very troublesome, but after listening to Feng Yu's work arrangements today, he realized that the management of the city is so complicated and needs to be considered. Too much.

But after thinking about it, this is also a good thing. With evil people like Darren and Ilia managing Cattail City, it will be difficult for it not to develop.

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