After the last "click" of the gear stopped......

The iron door is completely open!

Everyone took a few steps back in inexplicable fright.

A long-dusty smell blows in the face, yin and cold, with a strong earthy and musty smell.

Behind this gate, there is a deep cavern like a bare rock cave wall.

Everyone was still reminiscing about what the female voice had just said, and they didn't have time to be surprised.

"Wait! Don't go over ......"

Wang Hu stood in front of everyone and stretched out his arm.

"Listen ......"

Everyone held their breath and listened, but nothing was heard.

In the silent space, except for the slight cold wind, there was only the occasional snort of everyone in my ears.

However, after seeing Wang Hu's brows frowning slightly and his expression slowly becoming nervous, everyone believed that he must have really heard something—this was the difference between a cultivator and ordinary people, his hearing was far beyond ordinary people, and he was extremely sensitive.

Finally, more than ten seconds later, everyone heard the sound too!

That's also a regular "buzz!" The sound is accompanied by a fast frequency of "Da! Da! Da! The voice...... Something was closing in on them.

But as the sound of this thing gets closer and closer, it can be deduced that its speed is obviously not very fast, and it becomes clearer and clearer as it gets later, and there is an echo echoing in the deep hole, it must be a big guy.

A nameless sense of fear hung over everyone.

"Spread out! Fast! Go back and hide! ”

Wang Hu acted as the commander at the moment.

But what about the wide, straight passage behind which there is a place to hide?

Everyone took a few steps back—it was human intuition, the intuition of the unknown. Everyone pressed against the walls of the passage, their necks straight to look at the dark hole.

The regular sound is getting closer, like some kind of mechanical sound?

I don't know why, everyone breathed a sigh of relief at the moment, even Wang Hu was the same.

Although it was still the cold air that had been sealed for a long time, the sound and this deep hole were not so frightening.

Humans are not afraid of mechanical sounds, because they are man-made, not unknown.

Finally, the behemoth that could make a sound appeared in front of everyone's eyes.

- A large platform that can accommodate dozens of people!

Fences, painted with yellow and black oblique warning strips, surround it.

"Bang dang! …… Multiply! ”

The platform came to a steady stop at the top of the deep cavern.

The yellow and black fence gate opened, and on the left and right sides of the fence, three high pole lights rotated and emitted a faint red light, as if to welcome them.

"Let's go, it looks like we'll have to sit on this thing to get down." Wang Hu took the lead and walked over.

The platform is quite wide, even if it is a few dozen people standing on it, it is not a problem.

The floor is a metal plate with non-slip twill, and there are many pieces spliced together, each of which is the same size. In one corner of the platform there is also a yellow half-man high console with only 2 buttons with arrows: up and down.

Chen Liuwang carefully checked the button, there was a layer of dust on it, but it was not as thick as he thought.

"Go down?" He asked.

"Hmmm! Let's go down. Raven nodded.

I didn't expect this thing to be so well preserved.

After all, it was a product of a pre-civilization, and everyone was curious about how it moved—the deep hole was diagonally down, and the huge platform seemed to slide through the deep cavern, and it wasn't fast.

They saw several cables on the wall of the cave, which were supposed to be cables. There are some bryophytes and some faint traces of running water around.

As they went all the way down, there were lights around the cave wall from the position of their platform, and one by one they lit up on the cave wall to form a circle of light and extend all the way down, illuminating the entire deep cave.

Chen Liuwang roughly counted that there were 12 lamps distributed around the cave wall, and there were circles every 10 meters.

In the direction they came, they saw a 4-meter-wide slide that was "Karakala!" There are 7 grooves in the center of the slide, and if you look closely, you can see some gear structures of different sizes.

The huge platform is slowly descending along this slide.

Within ten minutes, they were at the bottom of the cave.

According to the distance and number of lights, it is estimated that it is about 400 meters from above! Equivalent to the height of a 200-story building in a former civilization...... Farther on, it was pitch black again.

Those lights, it seems, only come on when the platform starts to move and the electricity comes into play.

The platform stopped moving, and it stopped with a "clang".

The iron fence opened automatically, and everyone walked out, and under their feet were artificially built tiles, some of which were wet.

"What the hell is going on here?"

A slight echo sounded in the cave, and Chen Liuwang couldn't help frowning.

"I don't know...... However, judging by the scale of this underground facility, it must be a bunker such as an underground shelter from a previous era. ”

Old Man Su obviously didn't know anything about such a strange place buried under Sand City.

It stands to reason that the construction of such a place will inevitably consume a lot of manpower and material resources, and even at that time, it should be recorded in detail and detailed information will be left behind.

However, no one knows about this place, and no written information can be found, but only a piece of ancestral instruction of the local royal family remains. What does this mean? Is there something hidden here that needs to be deliberately hidden?

When they went down to the bottom, after everyone's feet stepped on the solid ground, the huge platform didn't make any other movements, and just stopped quietly in place.

Everyone's hearts felt incredible.

They were trying their best to wonder, what was the reason why the people of the pre-civilization needed to build such a huge underground facility?

And the machine and the woman's voice...... The word "Dr. Sue" was clearly spoken, and everyone heard it.

The surname "Su" is the surname of the Shacheng royal family!

……

In short, there are too many questions in everyone's mind. They all want to know the answer.

A glimmer of light lit up on Daddy's arm, and his skin trembled slightly......

"Well, someone wants to contact us!" The subordinate whispered to everyone.

Everyone gathered around, the fluorescence lit up, and the face of the old man appeared in the air, and the scene around him should still be in General Du's mansion.

"Our spies are back, and they've found something unbelievable!"

"Huh? How! What did you find? ”

"The guards who went to the exercise were found, about a hundred kilometers away. But all of them were gone, except for a few of their belongings. ”

……