"Yindian, you've been to the Water Nest Base before, you should have seen this kind of material, right?"

The laughing voices of the six elders came from the corner.

Hearing the six elders' question, Ye Qing, Ju Xiaoyi, and Ai Xia couldn't help but be stunned.

Why is this asking about silver electricity?

He's a tiger!

It stands to reason......

The six elders shouldn't know that Yindian can understand people's words!

But Lin Yu, who was the party concerned, did not react much.

When he was in Twinad Manor, he received a "special mission" arranged by the Second Elder through Twinard's communication.

Since the second elder knew about his ability to understand human speech, it was not surprising that the other elders knew.

Anyway, now he doesn't care about these trivial things.

Although his physical condition is not very good, no matter what, Lin Yu is still a genuine fifth-order ability, and he is a role that the Elders' House wants to be treated as an immortal!

So he wasn't worried about the Elders' House doing anything wrong with him.

Therefore, Lin Yu nodded at the Sixth Elder without the slightest wave on his face.

Since you can understand the words, nodding and shaking your head or something, you are completely within the scope of acceptance.

Seeing Lin Yu's actions, the six elders were stunned at first, and then a bright smile bloomed on their faces behind them.

He knew that the tiger he had taken a fancy to was definitely not ordinary!

"If you want to talk about the material of this elevator, that's a long story......

Accompanied by the faint mechanical sound of the elevator descending, the six elders recalled what happened more than ten years ago after the geological team discovered the crystal ore.

After the House of Elders noticed the abnormality of this mineral, it directly sent a commissioner from the research institute to block the area around the crystal mine at the first time.

In order to hide people's eyes, the House of Elders claimed that it had only discovered a rare earth mine in this primeval jungle.

After that, the commissioners of the research institute used special equipment to mine the crystal.

After the first batch of ore was sent to the Yun Provincial Ore Research Center for inspection, these commissioners discovered that the characteristics of these ores were not found on the earth at all!

This ore is not only far harder than natural materials, but also has some more magical effects.

When a ray of a special wavelength is irradiated, the transparency of the ore changes.

And after entering the transparent "excitation state", this ore can absorb almost all electromagnetic and even sonic signals, so as to achieve true invisibility!

This ore was named steel crystal ore by the commissioners of the Tianjing Research Institute.

Over the next few years, the institute's specialists worked tirelessly to study other properties of the steel crystal ore and smelt it with other natural materials.

This new material not only maintains the original characteristics of steel crystal, but also greatly improves the hardness and even plasticity.

The water nest base, and even the elevator that Lin Yu is riding now, are made of this new type of ore transformed from steel crystal ore.

However, due to the extremely limited reserves in the crystal ore, the Elders' House did not put the mass-produced new steel crystal ore into use on a large scale.

It is only in some of the top classified projects that are qualified to allocate such scarce resources.

For example, the Water Nest base, the nearly 100 fully stealth fighters at the Black Hawk Special Operations Team headquarters, and ......

The six "Blades of Damocles" that surround the earth.

As the words of the six elders slowly fell, the elevator carrying Lin Yu and his party also slowly stopped.

The elevator door slowly opened, and a slightly dark tunnel appeared in front of Lin Yu and the others.

Ju Xiaoyi and Ye Qing were obviously very familiar with this place, and they should lead the way in front.

As for the Sixth Elder and Lin Yu, they followed behind the three of them slowly and leisurely.

But at this time, Lin Yu's eyes became deeper and deeper.

Because he found that the abilities gathered at this depth of them had become terrifying!

And it seems like a steady stream of abilities is escaping from deeper underground.

"Here's ...... What the hell is there?"

Lin Yu's eyes flickered slightly, and he said secretly in his heart.

About half a minute later, the vision in front of Lin Yu and his party suddenly brightened.

What unfolded in front of them was like an ancient Roman Colosseum.

From the bottom plane to the top wall, it is more than 20 meters high.

At this time, they were standing at the top of the "stand", looking down on the entire cave.

In front of them was a staircase of nearly a hundred steps.

As for the places where the audience should have been seated, there is a stone platform in the shape of a lotus platform.

Looking at the size of the stone platform, it seems to be just enough for one person to sit cross-legged.

As for the "Colosseum" area at the bottom, it is a wide platform of about 100 square meters.

The floor of the platform, made entirely of steel crystal, was reflected in the warm orange light on the top wall.

Seeing such a situation, even with Lin Yu's temperament, he couldn't help but feel a little surprised.

In his perception, it didn't seem like it had been made by them in the House of Elders.

An ancient aura that seems to have passed through a long river of time is rippling out from that venerable stone lotus.

"Sixth Elder, you haven't told us before, why did you make this place look like this!"

At this moment, Ju Xiaoyi stretched her waist, looked at the six elders with a light chin with her slender hand, and asked softly.

"The appearance of these stone lotus arrays is a bit like the lotus seat where the Buddha and many Bodhisattvas preach in those Xianxia TV series!"

When they first came here, Ju Xiaoyi and the others had such a problem.

But the special combat team members who brought them here didn't explain anything, just let them try to improve their abilities here.

Now that the six elders are coming with them, they naturally won't let go of such a good opportunity to answer questions!

Therefore, at the moment when Ju Xiaoyi's words fell, Ye Qing and Ai Xia also immediately turned around and looked at the six elders with curiosity.

As for Lin Yu, he also quietly pricked up his ears.

He also wanted to use the answers of the six elders to verify whether his guess was accurate.

For Ju Xiaoyi's question, the sixth elder sighed lightly, and after looking around, he pointed around and said slowly-

"The style here is not designed by our Elders......

"According to our earlier detections, this area has existed hundreds of thousands of years ago. ”

"From the results of carbon-14 measurements, it seems that this place was also made more than 400,000 years ago. ”

"In these years, there is some resemblance to the tomb found in our old elders' house. ”