In front of the ruins of the city, it is almost impossible to see the remains of buildings with a height of more than two meters.

In the ruins of other cities, at least there are towering buildings, and here, all that remains is broken rubble and black ashes.

The broken viaduct where Shen Feng and them were located belonged to the periphery of the former city, so it was barely preserved.

As far as the eye can see, there are seven giant nuclear craters alone.

And that's not counting some of the other small craters.

Each of these giant craters was about the same size as the one Shen Feng had entered when he first came to the wasteland world.

At the bottom of the pit was shiny glass, and although it was still far away, Shen Feng seemed to be able to feel the terrifying radiation in it.

Standing inside without protective clothing, it is estimated that the whole body will ulcerate and bleed to death in a few minutes.

Even here, the number of Geiger counters has soared to more than five hundred microsieverts.

Although all his clothes were tightly wrapped and he wore a mask and mask, Shen Feng still felt great psychological pressure, as if something was quietly cutting flesh on him.

"How are we going to get in?" He asked Firefly.

The legendary Iron Nation could not have lived in the ruins of intense radiation.

Firefly sighed, seemed to think a lot, and said:

"Follow me."

Carrying weapons, ammunition and food supplies on their backs, the two climbed down from the viaduct and came to the ground on the ground below.

Firefly led Shen Feng through the black ruins and came to a place that was hidden by the wreckage of abandoned cars.

The beep of the Geiger counter was a little quieter.

Firefly looked around, as if recalling something, then climbed under the car and vanished.

Shen Feng was stunned for a moment, and immediately climbed in from under the car.

Soon, he found a hole in the bottom of the car that only allowed one person to enter, and a piece of iron plate that had been covered with it had been removed.

Shen Feng immediately climbed in.

This passage was twenty or thirty meters long, and after climbing for a while, Shen Feng's front was empty, and he finally landed.

A damp breath came to his face, Shen Feng's eyes were dark, and he was about to speak, when he felt a soft hand grab his hand, and the voice of fireflies sounded softly:

"Don't talk, you'll be fine in a while."

Shen Feng's eyes gradually adjusted, and he soon felt a faint fluorescence emanating from the surrounding walls, allowing him to see the outlines of his surroundings clearly.

But that's about it.

These fluorescent plants appear to be underground fluorescent mosses.

Shen Feng touched the surrounding walls and found that all of them had rough grinding marks, which seemed to have been built in a hurry, and he had not rested after that.

What is this place?

"This is the Land of Iron." Firefly whispered,

"I haven't been back for a year or two, and it's probably expanded again...... There are many tribes living here, we must be careful and get to the central area as soon as possible to find the country of 0. ”

Shen Feng couldn't help but be a little silent.

I didn't expect that the so-called Iron Country turned out to be a place built underground!

There was no normal light at all, just a little fluorescence on the surrounding walls, allowing people to see the outline.

Many places without fluorescent moss are pitch black, like black holes.

At this time, Firefly's pupils had shrunk into a line, faintly fluorescent, obviously very accustomed to the environment here.

"The road here is very complicated, even I can't recognize it all, you are not used to the environment here, you must follow me, in case you fall into those abyss caves, you will not be able to get out at all!"

Shen Feng nodded, took out a night vision device from his backpack and put it on his eyes, everything that was originally dark immediately became much clearer, and said in a deep voice:

"Let's go."

Firefly couldn't help but look at his night vision device curiously, understanding that this must be another treasure in Shen Feng's hand.

The two walked silently in the dark underground space, and there was silence around them, only their footsteps could be heard.

Gradually, however, they could hear the sound of earthworms crawling through the dirt, the sound of crickets crawling across the ground, the sound of water droplets, and so on.

There were even faint whispering voices, as if someone was whispering around.

This underground space is far more lively than imagined.

"It's someone talking in the distance, and when it reaches our ears through the passageway, it becomes a vague whisper." Firefly whispered in Shen Feng's ear.

Her voice was soft, as if she was afraid that she would be discovered by others.

Shen Feng nodded in understanding.

The two continued to move forward, about a kilometer long, and Firefly took Shen Feng to turn, but this time they entered a downward passage.

After walking for more than ten meters, they came to a new lateral passage.

This time, the ground was very solid and level, and the pitch-black corridor in front of him was like a silent beast, waiting to devour everyone who entered his body.

Shen Feng looked towards the surrounding walls, and suddenly saw a few words behind a piece of fluorescent moss:

"Songjiang New Town."

Shen Feng couldn't help but tremble as if he had been struck by lightning, and finally understood where they were.

This is not some hastily built underground shelter, but a subway from the old magic capital!

They're in the middle of the subway!

The land of iron is the country of the subway!

Looking under the platform, Shen Feng immediately saw two railroad tracks winding away.

During the summer vacation of his freshman year of high school, he also participated in the summer study tour organized by the school, went around the magic capital, saw the science and technology museum, and took the subway.

At this time, he vaguely felt that the subway here was not exactly the same as the subway in his impression.

It seems that the space is much wider and taller.

And the road that Firefly took him just now was obviously not part of the former subway, but seemed to have been excavated later.

Could it be that the subway system of the old magic capital continued to be built after the outbreak of war?

Shen Feng thought as he entered the empty subway passage with Firefly and walked forward.

They slowed their footsteps as slowly as they could, but they still echoed here, and it was very harsh.

After all, everything around is too quiet.

Shen Feng looked around, and even had the feeling that there were only two of them living in this huge underground space.

Soon, they had walked through two former platforms and arrived at a new platform location.

"Be careful." Shen Feng frowned and grabbed Firefly's hand, "There's something wrong here...... There seem to be a lot of ...... Footsteps ......"

But when he looked around, he could only see gray walls and domes, and there were no other living things.

Hearing this, Firefly's face changed, and he hurriedly said, "It's not good, let's go back quickly, this may be a dead nest!" ”

As soon as he finished speaking, the gray walls and dome around him suddenly squirmed.

Then I saw that the wall seemed to come to life, and it suddenly trembled, and lit up with blood-red points of light.

Shen Feng's night vision device can be seen clearly.

It's rats, thousands of rats!