A soldier with a jetpack on his back staggered out from the inside.

Just walked to the door, look left, look right.

Although he looks like a child, he always feels as if something is wrong today.

I stretched out my nose and sniffed, feeling that the air here did not know why, there was a faint smell, and if I smelled carefully, it was the scent of citrus blossoms.

In this dull underground space, I haven't smelled this fragrance for a long time.

He looked suspiciously at the door that had just been opened by himself, and behind that door was a shadow.

Just after taking a step towards the shadow, the human soldiers patrolling below suddenly shouted upwards.

"Old Yang, go on!"

A fluorescent agent of the same drug-like substance flew into the air, and the human soldier called Lao Yang stopped walking behind the door, turned around and hurried to catch the preparation.

At this moment, in the shadows behind the door, the blood kite in Ning Yu's hand was already ready to attack.

After the soldier finished taking the drugs, he seemed to have a new goal ready to do, he jumped down from above, and the jetpack started.

He slowly descended towards the descent, and the leader of the soldier who had exchanged ears with him over there was going to say something.

At the same time that he left above, three people had disappeared from the shadows behind the door and walked behind the mechanical door.

The space inside is indeed much more complicated than the outside, and all the passages are made of some kind of metal with a high hardness.

The exterior walls of these metals are full of complex and aesthetic patterns, and only straight and diagonal lines are used to draw a futuristic look on them.

But these patterns don't seem to be just for decoration, there is also white energy flowing slowly on them, and they seem to have some regularity.

Ning Xuan walked in the front, Ning Yu and Shen Yiyue followed closely behind, and there was no one else in this passage for the time being.

"Shhhhhh

"Xiaoxuan, what's wrong?"

Ning Yu stepped forward and asked her with concern, his eyes looking at the expression and movement on Ning Xuan's face.

"It's okay, sister, maybe I'm too tired these days."

In Ning Xuan's eyes, it seemed that some signal flowed through, flashing some patterns, but it disappeared immediately.

She quickly put away the movements on her hands and stood up again, and Ning Yu looked at her meaningfully behind her back, revealing thoughtful eyes.

The three people walked to the corner in front of them, and suddenly heard a sound of footsteps.

Ning Xuan's hand had turned into a prosthetic metal blade, but it was pulled by Ning Yu.

Not long after, the soldiers patrolling the interior approached, and they did not turn this way, because this direction was the passage to the outside of the door.

The soldier stood at this intersection and glanced at the door, then continued to walk away.

Three people hung on the ceiling, all silent.

After descending from above, several people came to a checkpoint-like place, which was a separate room with some metal panels.

There are no soldiers in this checkpoint at the moment.

"Sister, I'll go see if I can get a map here."

Ning Xuan and Ning Yu said and walked in first, on the underground engineering map she provided, although this piece was divided, the details inside were not shown.

Ning Yu nodded lightly and waited for her outside with Shen Yiyue.

When Ning Xuan walked inside the checkpoint, Ning Yu whispered next to Shen Yiyue, "

How do you feel?"

"Kind of weird."

Shen Yiyue did not look at Ning Xuan, who was operating in the checkpoint, pretending to be chatting with Ning Yu casually.

"Do you want to do it, Xiaoyu?"

Ning Yu shook his head slightly imperceptibly when he heard this, and Shen Yiyue blinked his eyes knowingly, and it was at this time that Ning Xuan walked out from inside.

"Sister, I got the data inside."

She walked up to the two men and raised her arms, which showed what the core area of the ceremony looked like.

Although the entire building space is already underground, it is still a downward spiral structure, and two passages stagger to the deeper underground.

In the middle below, two spiral passages that go to the deepest part reach the closest center point.

If you look down from above, this area looks like two yin and yang fish entangled with each other, and finally fused into one.

I am afraid that the lowest area is the core area of the ceremony, and this is also the destination of several of them.

"We can go from here."

Ning Xuan pointed to a path above, which led directly to the entrance of this double helix passage.

"The guard force of the checkpoint in the middle is very weak, and it seems to be the passage used by the soldier just now."

Ning Yu also saw clearly the distribution of the content represented above, and the green aperture represented the guards distributed at the checkpoint, as well as the direction of their changing guard at different times.

She glanced up at Ning Xuan, Ning Xuan couldn't see the expression on her face, and Hu Lan's eyes were as calm as water, and she couldn't see the bottom.

All this is indeed too coincidental.

She had just walked in and found a checkpoint that happened to be unmanned, and a passage just enough to lead to a key location.

It was like preparing everything and preparing to invite Ning Yu into the urn.

But Ning Yu would not choose to retreat, and there was no hostility in Ning Xuan in front of him, but Ning Yu knew very well that this might not be entirely Ning Xuan himself.

They followed the planned path, bypassing all the guards, and among them came across the lazy soldiers during the changing of the guard.

These unlucky eggs were solved by Ning Xuan with a knife, and then stuffed into the trash, without making any sound from beginning to end.

As you go further in, you can clearly feel the atmosphere of more and more oppression, there seems to be an invisible pressure in the air, and there is a buzzing sound similar to white noise.

If you live in this environment for a long time, I am afraid that ordinary people will become more or less nervous down.

The lines flowing on the metal channel next to it are also becoming denser and denser, as if breathing, sometimes bright and sometimes dim, and the brightness is different each time.

This spiral-shaped underground building is breathing slowly and evenly as if it were a living creature.

After rounding the passage round after turn, they finally came to the front of the double spiral passage.

In the small area in front of you, two small doors, one black and one white, are painted.

Ning Yu and the three stood in the higher area, and in the lower depression below, the two small doors were ajar, as if welcoming someone approaching.

The three people looked at each other a few times, and when they were about to start discussing, a sudden change suddenly appeared in the space.

The whole building suddenly trembled violently, as if it had been earthquaked.

The area behind the three of them suddenly began to collapse violently, the rumbling sound was deafening, and the screams of the soldiers could be faintly heard.

Something seems to have been started.

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