Time passes slowly.

And as this rock-solid fortress stands again on this ruin, quietly guarding this line of defense.

An unknown movement began to appear under the fortress secretly.

Deep, at the bottom of this underground fortification.

A rustling sound began to sound, as if some mouse was moving below. He was doing something secretly, and he slowly drilled a hole in the floor tiles in this room with various instruments piled up.

Then, as the opening slowly expanded.

Gradually, a hand appeared carefully. I saw a transparent armor on it. Relying on the sharp part of the finger, the solid floor tiles were buckled into pieces.

At first glance, it was like a dead soul struggling from the underground with difficulty trying to climb out.

No one knows what is going on here, and no one will guess that such a strange thing will happen here.

then.

As time passes slowly, the floor tiles in front of me silently dig open in this darkness.

Liu Yun, covered in mud, slowly crawled out of the square pit like a resurrected zombie. His face was charred and his face was dirty. He first looked at the place and confirmed that there was no figure. Then he took out his red spear from the ground.

Then sit on the floor tiles and slowly suck the fresh air.

After lowering his head and taking out another round thing from the pit, he silently sighed that he had this thing, otherwise he would have stayed underground for a long time and would have been suffocated to death.

That's right.

At this time, Liu Yun did not dig an authentic tunnel from the ground, but before the fortress was established, he hid directly in the underground of this room, waiting for the opportunity to bring it.

I have to say that this approach is quite crazy.

If Liu Yun had not relied on his own skills and the help of this wind crystal, he would have been impossible to do such a thing.

After all, I have to hide for a long time, just like being buried in a coffin, which is very stressful.

As for why Liu Yun chose such a plan instead of digging a tunnel from the underground? It was mainly because in order to prevent the enemy from attacking from the underground, the fortress had already been written underground before.

Although it cannot block the enemy's sneak attack from the ground 100%, at least you can obtain the enemy's attack information before the sneak attack. In this way, you will not be sneak attacked without knowing anything.

Therefore, in order to avoid such an unfavorable situation.

Liu Yun chose such a more adventurous choice, made an appointment in advance to launch the attack time, and then woke up by himself. He relied on his arm armor in his hand to talk to the big whale, and from its answers, he obtained whether their humans were ready for attack.

then.

This was such a strange situation.

At this time, he sat on the floor tiles and asked about the big whale a little, and learned that the human troops had already started to set off. Liu Yun nodded and understood that it was time for him to move.

I glanced at these devices and studied what these are?

After looking for a while, I found that these things seemed to be spare parts of a huge mechanical one. I immediately felt that this was probably for those steel warships.

In this regard, I kindly processed the parts slightly and didn't care about these things.

After walking to the door, he quickly opened it with the wire he picked up. Then he stretched out his head and looked at both sides, and after confirming that there was no one guarding the passage, he walked out carefully.

At the same time, we also keep good habits and bring the door with us.

Like a visitor, he slowly walked over according to the location of another warehouse in his memory.

After a while, we arrived at a room filled with various foods as emergency food.

When he came here, Liu Yun slowly raised a smile on the corner of his mouth. He found some good things to fill his stomach, let his body, which had been eating soil for almost a month, and felt the taste of other foods well. Then, he started his own excavation work in one of the corners.

Use the spear in your hand to cut the connected floor tiles piece by piece and move them away.

Looking at the box of props placed under the floor tiles, I began to think about what kind of expression these demons would have next.

He quickly put all these props on. Liu Yun began to quickly walk towards the underground passage with these things.

First, he ran to the position where the command room was located and made some arrangements. Then, he installed other props everywhere.

After chatting with the Big Whale, I learned that the human army had arrived at the predetermined position according to the scheduled plan and was launching shelling positions.

Just sat on the chair in the police room and quietly waited for the moment when the time came.

At the same time, he looked at the corpse of the red ghost next to him, looked at the armor on the other party, curious that this thing seemed to be a huge difference from his memory. He secretly thought about what else Vila had made?

As a result, the next second, I suddenly heard footsteps in the passage not far away.

It seemed that there was a team of demon soldiers walking over.

Faced with this situation, Liu Yun was stunned. He thought that a team of patrolers had just gone out a few minutes ago, so why did another team of people come in to patrol immediately?

He cursed these guys and didn't play according to the routine. He looked at the dark environment, which was obviously different from the person next to him. He immediately turned off the oil lamp beside him, leaving the position in darkness, and then asked the group of people walking over, "Who?"

The words are serious, as if they are a conscientious sentry.

In an instant, the team stopped one after another and seemed to have not figured out what was going on?

Looking at Liu Yun’s location, he found that he was in the darkness. He couldn’t help but answered: “Parking team 3. Patrol according to the mission.”

Then, he asked, "Why did your light go out?"

"I don't know, it suddenly went out after hearing your voice." Liu Yun replied briefly.

I don't dare to say much nonsense.

Because he also understood that he didn't know how this person communicated normally. If he said too much, he would be in vain.

After hearing Liu Yun's explanation, these demons also understood why Liu Yun questioned them so nervously.

I was also curious about whether something was happening here? Especially after smelling the faint smell of blood in the air, I became even more alert.

Immediately asked, "Can you do it?"

"Yes, but I can't see clearly for the time being. Do you have a light?"

"have."

"Come here, take a look for me."
Chapter completed!