In the heart of Yi Feng, he also heard the surprise of the people's mutual applause.

But he did not dare to slack off, and hurriedly praised the ocean for a few words, and suddenly, the little ball rotated happily, and forgot the unhappiness of the moment...

“Okay, now fly an unmanned submarine close to the door... slow down, be a little slower.”

An operator nervously remotely swam through the target area.

After a few minutes, it passed through the entrance smoothly and abnormally, slowly exploring inside.Because of the perennial relationship between soaking seawater, it can be clearly seen from the screen that there are a large number of coral reefs attached to the walls, and some places are very narrow.

In fact, after a moment of entry, the cold hair of the vast majority of people stood up, the spirit was concentrated to the extreme, and various weapons were in a state of waiting for hair, afraid of what strange enemies appeared inside.

That kind of hope and worry... are mixed together, and the emotions are difficult to really distinguish.

Even Yi Feng also pinch a sweat... This complete base may still send a signal to the outside world!This is not comparable to a Mars UFO that has been raging for millions of years!

A civilization with a higher level of science and technology than human beings always has a certain danger.

Even if the other party just left something casually, the higher level of civilization is equivalent to a huge gap in theory, equivalent to the unknown... The unknown is always terrible.

But after seeing the tattered scene inside, everyone breathed a little sigh of relief in their hearts.

“I thought it was the greenhouse effect!”

“...it used to be a small, hidden island, because of the global greenhouse effect, was completely submerged by the sea ... it is estimated that 30,000 years ago, aliens were no longer smart to think of this.”

Dr. Lambo's glimmer of light analyzed the specific reasons: "You see, there are traces of wood rotting outside, probably trees that used to grow on the island."

People have been relieved, this is very likely, because the greenhouse effect in recent decades, please, sea level rise directly flooded the island...

Some people are optimistic: "Perhaps ... the inside facilities are soaked in seawater?"

But the good view is not long, in the process of exploration, the submarine suddenly saw a thick door, blocking the way ahead.

There is a red light next to the door!

There were no corals in the area anymore, it was simply clean and abnormal, as if something had just been cleaned up.People were slightly nervous, and many eyes stared at the submarine slowly.

When the submarine approached the door, suddenly, the surveillance screen on behalf of the submarine was dropped.

In less than five seconds, it fell out without warning!

“Ah!”

Several extremely focused soldiers were startled, and the weapon button in their hands almost pressed.Yu Yifeng's reaction was the fastest, and immediately shouted: "Don't panic!Nothing came out, and sent a few more submarines over, a few meters apart, and see what happened!”

The operator quickly entered the data on the platform, and soon, five submarines slowly swam in, controlling a certain safe distance from each other.

A submarine began to approach the gate.

In an instant, the screen of the submarine was black again.

But in the eyes of a few submarines in the back, the submarine in front of them was just like that... inexplicably disappeared.

Disappeared?

Yes, disappeared.

“Try again!”

Another submarine began to approach the gate, and this time, at the moment of disappearing, it was finally clear: very close to the gate, the whole submarine turned into a pile of powder-like things within a few seconds, and then quickly disappeared into the sea.

The whole process...less than 0.5 seconds!

If you do not use the slow lens playback, with the human eye to distinguish the speed, it is really difficult to distinguish.

Everyone said nothing, and everyone's face was not good.

In fact, this situation was also expected in advance, a normal alien research base, how can there be some defense facilities?

After all, the planet has indigenous people or other creatures, and defense facilities are still necessary.

"I just didn't think it was so strange."

Without the order of Yi Feng, several experts immediately took action, trying to enlarge the entire image and figure out why the entire submarine was broken down into powder.

But unfortunately.

There was nothing in the image... the submarine seemed to be inexplicably broken down in that moment.

Is there some decomposition of light?Chemical decomposition?I feel more like a physical decomposition.”

Everyone in the room was meditating, and finally Yi Feng said flatly: "If not, send a few more submarines to test the composition of some of the sea in the region."

"If you can't do it, bomb with a nuclear bomb, everyone, act fast!"We don’t have much time!”

In fact, he did not need to say, people also quickly took action.

But less than a last resort, we do not like to use nuclear bombs, a handful of things inside a thin one, people came in vain, but also wasted this precious clue.

And Yu Yifeng jumped into the kayak again, trying to communicate with Ling, and suddenly the little green ball kept beating cheerfully...

Over the next half-hour, the scientists tried several more times, each time the submarine was quickly broken down into tiny particles that were hard to detect by the video equipment.

“It is strange that the surrounding sea water is missing certain elements, especially metal elements such as iron and magnesium...”

"The approximate safety range is here... about two meters from the gate!"It’s very dangerous to approach!”

“There must be something hidden in the sea, but we can’t see it.”

In this incessant attempt, many researchers are slightly tired, and the back of their hands is sweat.

This kind of fatigue is actually psychologically surprising, but they are still trying to persist.

The soldiers are also on high alert, all kinds of weapons are in a state of waiting, and even the spacecraft is in a semi-starting state, in case of any huge risk, they will immediately counterattack.

After a few minutes, scientists finally discussed a few conjectures.

“A nanorobot with the ability to self-replicate, is bound to a distance of about two meters from the gate... is that it?”Is that your guess?”Yu Yifeng looked at Dr. Lambo and asked directly, “A aggressive nanorobot... is there any way to crack it?”

Dr. Lambo frowned and shook his head slightly: “This nanorobot’s defense mechanism ... To be honest, we don’t have such a dangerous technology that may require some special signal to avoid their attack.”

“I suspect that the red light ... or something inside the gate is the nanorobot’s control!”It can take a long time to crack these signals... and, we don’t have enough cracking equipment!

“The industry on this planet is too poor to take enough time...”

“How about the lights or the door?”Yu Yifeng asked.

Rambo can't say, "No, it's too dangerous, Captain... this self-replicable nanorobot is a very dangerous thing, absolutely black shell-level technology!"

"Perhaps after blowing up the signal lights, they lose their procedural constraints, not only will they not fail, but they will begin endless copying..."

“You know, if the exponential growth goes, after a while, there will be more and more nanobots on the planet until one element is exhausted... Once the flood is gone, it’s hard for us to stop this catastrophic outcome.”

"...blast the signal light, it may be a crisis of extinction!"

Hearing this, Yu Yifeng's eyebrows are wrinkled.

These weapons were discussed.

Nanorobots, the volume is also nanoscale, their biggest feature is that they can replicate themselves like cells.

But they are much smaller than cells, and if there is enough raw materials and energy, nanorobots will grow exponentially under endless replication.

A nanobot, 10 division replications, 1024, 20 division replications, can reach millions... All the way through, endless replication, they will kill almost all living things, break down everything, because there are also iron, magnesium and other elements in the biological cells.

These elements will be used as a copy material and forced to extract.

Without the necessary elements, the cell would of course die instantly, and the whole organism looked as if it had been disintegrated.

Nanorobots, world-class technology, are 10,000 times more dangerous than nuclear bombs!

Just think so, Yu Yifeng's heart beats faster a few times, and there is a cold sweat behind...

Damn, this high-risk weapon is put at the door... there’s something wrong with these damn aliens?!

“Or... find another place to dig in?”Without passing through the door, destroy the surrounding walls and enter the laboratory...”

Dr. Lambo immediately shook his head: “No!These walls are high-strength metals, and it is not known how thick they are ... unless they can be smashed quickly by nuclear bombs or high-explosive bombs ... The large cutters are estimated to be a day or two.”

“Is there a way to this metal, Ling?”

(The following theft...)