Chapter 385 The Gap Between Life and Death

The world record for holding breath underwater is more than 20 minutes, but holding breath while exercising will greatly consume oxygen in the body, and it can only last for two or three minutes at most. With the little air in the helmet, Yu Yifeng can only hold on for five minutes at most.

The five-minute countdown sounded in his heart... It must be as soon as possible!

Passing through this gate is simply a disaster area for nanorobots. In just a short while, various green marks are densely spread on the ground like soybeans, like a layer of seaweed carpet, and this carpet is expanding.

It may be that the metal elements here provide them with rich materials, so they can expand so fast.

Yu Yifeng's scalp tingled when he saw it. If "Ling" hadn't marked these robots for it, he would have to give up this action.

Maybe... he would be decomposed if he walked in!

Now he just needs to take some risks. He can only unconditionally believe that "Ling" has marked everything.

Without time to hesitate, Yu Yifeng made up his mind and swam slowly sideways. After taking off the power armor, of course there are benefits. It can sense the water flow and the whole body is much more flexible.

But such intense exercise caused the air in the helmet to leak out and be consumed, and soon most of it was used up.

After tremblingly avoiding the algae marks at the door, Yu Yifeng stepped on a metal floor and quickly used an electromagnetic rifle to hold a machine and pulled the trigger. "Bang!" In an instant, a nearby instrument was smashed to pieces.

Destruction is always easier than creation, and these high-precision equipment cannot completely defend against human high-speed bullets.

The huge recoil of the gun made his whole body tilt suddenly, and he almost touched a group of green algae.

In an instant, he broke out in a cold sweat on his back again, and he quickly stabilized his body. You know... it's a nanorobot wrapped inside!

His pounding heart is increasing oxygen consumption, and even if he is immersed in seawater, he really sweats. However, he has no way to control this physiological reaction, so he can only speed up his hands.

"It's really fucking dangerous!"

Things like nanorobots are completely unreasonable.

As soon as it touches human cells, it will forcibly extract some metal elements inside as nutrients for self-replication. Don't think that human cells have no metal elements. Calcium, sodium, potassium, magnesium, and iron are basically present in every cell. If any one of them is missing, human cells will die.

If infinitely replicating nanorobots are used to destroy the world, it will definitely be more direct and effective than nuclear bombs, and there will be no life left.

Any!

This kind of disaster is called "gray tide" in some science fiction novels. I didn't expect that he could witness it with his own eyes... I don't know if these things can be replicated infinitely.

Yu Yifeng couldn't help cursing in his heart and suddenly took the last breath of air in his helmet.

"The last three minutes..."

He broke the instruments one by one, and used the laser cutting tool he carried to randomly cut out some small chip-like things. He didn't care to tell what they were, and threw them directly into the helmet.

Using a flashlight to shine around, he immediately saw an elevator facility. It seems that this laboratory should have underground space!

However, apart from the elevator, no other entrances and exits were found... This elevator seemed to be out of power.

There is no defense mechanism in the laboratory. Perhaps some circuits were destroyed by the nanorobots...

Turning around, these green groups are spreading rapidly at a speed visible to the naked eye! In just a short while, they occupied most of the laboratory, with groups everywhere.

Yu Yifeng gritted his teeth again and spit out a lot of turbid bubbles. This silence was like a shadowy hand slowly strangling his throat.

This is underwater, and it is very inconvenient to move. In the dark and narrow space, the only light is from the helmet and the submarine outside...

Clausus, lack of oxygen, and the fear of death are affecting the emotions deep in his heart. He feels a little dizzy and instinctively wants to breathe. This is a manifestation of great psychological pressure.

"Hurry up, within two minutes..."

At this time, he heard a light "bang" outside. It should be the oxygen cylinder of the power armor that exploded. He screamed again in his heart that it was not good. This explosion must have spread the nanorobots everywhere.

At this time, he couldn't think so much. He calmed his mind again, turned around and swam towards a radar-like thing again.

This thing was about one meter high, and it felt very important.

Yu Yifeng fired several shots at the bottom of the radar, then cut it off with a cutting tool, lifted it up, and was shocked.

"It's so heavy!"

"One more minute!"

If he took this thing, he would definitely not be able to swim up! What to do?

He was very anxious, but at this moment, he suddenly heard the exclamation of Zhao Yao and others, and something seemed to have happened outside.

"Hurry up, Captain, come out quickly!"

"Green... Green!"

"Come out! Speed... We're about to be surrounded!"

These sounds spread in the water through the power armor's broadcast, and it sounded like a strange "buzzing" feeling.

But Yu Yifeng didn't understand what was happening. The group of nanorobots at the entrance of the passage was about to close the exit!

At this moment, he dared not hesitate, and suddenly lifted up the radar with a force. My goodness, including the buoyancy of the water, it weighs a full 100 to 200 kilograms!

"...I can't swim!" This intense exercise increased the oxygen consumption. He felt that the dark areas in front of him were a precursor to a large lack of oxygen.

If he took it with him, he would definitely not be able to escape!

"Hurry up, Captain, hurry up!"

"...Hurry up!"

In this extremely dangerous situation, Yu Yifeng's adrenaline surged all over his body. He forced himself to calm down and faced a huge choice...

First, throw away this radar and swim out by himself. After all, there is already a harvest in the helmet!

Second, search for the entrance to the space below, and then find a way out. This may be an opportunity... It's hard to say what the isolation layer below is, and there may even be air!

The veins on Yu Yifeng's forehead were throbbing, and his face was ashen. I don't know if it was because of holding it or some other reason. The elevator was not powered on, so it must be unusable. Where was the entrance? Was it blocked by nanorobots?

The darkened area in front of him, and he bit his tongue hard, and a spicy taste immediately rushed into his throat.

He couldn't faint at this moment, or he would be dead!

Just as he was about to give up the radar with regret, he suddenly felt his whole body suddenly lighten, as if he was pulled by a big hand, and rushed to the exit.

Yu Yifeng was in a state of extreme concentration at this time, relying on a breath to hold on. He was pulled suddenly without any preparation, and his heart was nervous. He "gulped" a few mouthfuls of sea water, and then choked his bronchus. The whole lungs reacted strongly, and a large number of bubbles were vomited out.

"There are enemies!" He subconsciously wanted to shoot behind him. The ability of a person in the seabed was too limited. .

But in confusion, he soon thought that it should be "Ling" who suddenly got the idea and was helping him...

"Hurry up! Hurry up!"

"... It's closed!"

"Fuck him... Don't stop me!"

The algae at the exit have been flooded. In fact, these are all "Ling's" markers, and they are about to block the entire exit.

Suddenly, a huge water wave directly swept them away, and then these marked seaweeds also came into contact with the nanorobots and were quickly swallowed.

But taking advantage of this time, Yu Yifeng had passed through the exit like a fish and shot out like a cannonball.

The next moment, several arms had already grabbed him firmly.

"It's the captain!"

Zhao Yao was overjoyed. He saw that the power armor on Yu Yifeng disappeared, and he instantly thought of something. He wanted to pull out the oxygen tube on his power armor, but then he thought that Yu Yifeng's lungs were full of water and he could no longer breathe oxygen.

He could only shout: "Quick! Retreat, retreat!"

"Prepare high-yield nuclear bombs! And pulse bombs..."

At this last moment, Yu Yifeng was exhausted. There was a large area of ​​darkness in front of him, but there was no oxygen supply. He only saw his teammates and... a green group... This thought gradually dissipated, and finally he fainted.

But he still didn't put down the thing in his hand!