After walking for a while, a huge problem was laid in front of people's eyes: there was almost no upward path at the various forks, only a downward path.

If this continues, people can only go deeper and deeper, all the way to the ground!

I don't know how big this underground cave is, but people walked and crawled for two hours without seeing any end at all...... It doesn't always lead to the magma layer of the mantle, does it?

In fact, people have also found several upward trails. But most of them are going in the wrong direction, even in the direction of the nuclear engine!

And the others, with the human body and power armor, are too large to pass.

What to do? At a depth of 500 meters, it is impossible for people to dig up!

This is the question that everyone in the team has in front of them.

People can only save more refrigerated gas, take faster and bigger steps, and try to find a real way out in a limited time.

This is not to say that Yu Yifeng took the wrong path, in fact, the direction he chose must be the right one.

And the map drawn by geologists also pointed directly to the exit of the cave in the B11 area, but I didn't expect this to happen!

Now people can only continue to move forward, even if they go a little farther, it is good, and they can't go back and eat nuclear bombs......

"Everyone, hold on and walk a few more kilometers!"

I have to say that long-term hardship and tribulation may really exercise people's willpower. Since the birth of the new human civilization, it has never enjoyed it well......

The calamity and tribulation of the environment have inadvertently tempered the spiritual will of every citizen. When they encounter a disaster, they will not think about escaping at first, but how to overcome it.

Everyone's life belongs to him, and everyone is responsible for himself. In this case, complaining will not help, but will spread negative emotions. Everyone understood this, so they all held their breath and followed in silence.

Several patients who were injected with broad-spectrum immunotherapy actually had great pain in the joints of their bodies, but they endured it without saying a word; Several people with broken leg bones were sweating profusely even if they used painkillers, but they didn't say anything.

Occasionally, a few scientists sighed with the leisure to sigh how new the strange environment of the underground was, how strange these creatures were, and how strange the heavy atmosphere was slightly dispelled......

A slight feeling appeared in Yu Yifeng's heart......

More than 80 scientists and engineers, nearly 20 soldiers, were carefully selected over a period of three years.

They have survived in the ghost place of Knicks for two months, and the canned food they eat every day is black as soon as they walk out of the base, and they have to wear power armor all day and night.

In this environment, perhaps...... The nerves are already extraordinarily thick.

However, why did they come here to open up wasteland?

There is no way, the work of clearing the wasteland cannot be handed over to robots, someone has to come, and this is their responsibility. In the same way, exploring the unknown is also their hobby and the meaning of their life......

The slogan "For all mankind" is too wide, and more, they just want to satisfy their inner exploration** and fulfill their responsibilities......

People will always do something stupid in their life, love someone stupidly, or stupidly do something that does not match their own interests.

There are some things that you know will not bring you any benefit to when you complete it, just like this time the land reclamation, which is not of great benefit to the individual, but there are still so many people who go to the ......

Human beings are such contradictory creatures. Each of them is eager for benefits, but it is impossible to be exactly like the program, and they will always choose the plan that is in their best interest......

This is the biggest difference between human beings and real artificial intelligence.

"It's coming soon! Come on, everyone! Yu Yifeng kept cheering for everyone.

Where there is him, there is always a sun that warms people's hearts, which is an ability that others do not have.

The cave is not devoid of light, but the faintly glowing fungus is not enough to illuminate it. People can only use the night vision function inside the helmet.

There are two types of night vision functions, namely low-light technology and infrared thermal imaging technology.

Generally speaking, the image seen by low-light technology is closer to what people normally see, but the colors are more monotonous.

But when a few scientists curiously looked at the animals of the underground with infrared sight, they found something different.

They found that almost every living thing has a particularly bright red dot in its body, a bit like a human heart.

This red dot doesn't jump, it's like a stable heat source!

Scientists are amazed that this may be a special energy storage organ for underground organisms...... It's a pity that the samples can't be captured now, it's a pity.

It's so damp that if you touch the rock wall with your hands, you'll find it slippery and soapy, and it's very uncomfortable to touch.

In three hours, the people walked and climbed twenty or thirty kilometers. That's fast enough, it's not a straight road, it's a bumpy cave!

Sometimes, the caves are not even a meter high, and people have to crawl over them on their stomachs.

The cacophony of the power armor scraping against the rocks echoed several times in the cave, and stimulated a large number of cave creatures to run around, and even crawl on people.

They squeaked and fled as if they had touched some taboo when they touched the cold power armor.

Power armor, fortunately, people have power armor!

Without this sturdy stuff, the cave creatures that jump like chickens and dogs can scare people to death.

When the people climbed through the last low hole again, they finally came to a spacious place!

This spacious cave is about two hundred square meters, and is firmly supported by several thick rock pillars in the middle.

The surface of the rock is the product of acid corrosion, and it is exceptionally hard and solid.

"Captain, take a break!"

William, the engineer, proposed: "After twenty or thirty kilometers in a row, everyone really can't walk. And I suspect that we are already underneath the cave exit. But how do we get there? There may be several floors in between! Can't you dig it out? ”

Yu Yifeng also smiled bitterly: "It's really terrible, according to the compass and the map drawn in the expert's computer, we have indeed arrived at our destination." However, there is a 500-meter-thick rock above. Either...... We are here waiting for rescue? ”

As he spoke, he paused again: "...... I don't know if the nuclear explosion in three hours will affect this place. ”

Another young soldier also said, "Captain, why don't we continue to explore the surroundings for a while." We still have to walk around to see if there is a way up there. ”

Yu Yifeng thought for a moment, then nodded categorically and said, "Okay, you team will act together, and you are not allowed to disperse." Also, I have to come back within half an hour, and all of them have raised my vigilance to the highest level, do you hear me? ”

The men immediately straightened up and gave a military salute: "Yes, sir! ”

They hurried into a hole.

At this moment, a shaking sound came from afar, and one by one they fell to the ground unsteadily.

Then everyone heard a loud bang!

The nuclear engine exploded ahead of schedule!

Yu Yifeng jumped up violently and roared loudly: "There is an earthquake!" ”

"Everyone! Get close to a wall or a pillar! Hold your head in your hands! Fast! Fast! ”