This pile of rubble looks very strange; they are all stacked neatly, like a wall.
When everyone saw this situation, a few words popped into their minds.
"There are signs of artificial construction here, it must be here!"
The crowd cheered and took out their tools to examine the traces around them.
Sure enough, signs of human habitation were soon discovered here.
After conducting tests, they confirmed that there was indeed a place where humans had lived behind this stone wall.
In the distance, there was a huge tree hole; I wonder what's inside.
Their robots can't get inside, so they need to go in and search.
In order not to damage the image of this place, they had no choice but to take a detour.
After walking around for about half an hour, we finally arrived at the other side of the wall.
They saw the large tree hole again, now surrounded by a small fence made of sticks, with several unknown plants growing inside.
To figure out what was going on, Lu Yuan reached out and dug up the plants, placed them in flowerpots, and stored them in his dimensional space.
Then they came to the tree hollow, picked up their flashlights and took a look, only to find that it was a completely different world inside – a tunnel.
Upon seeing this tunnel, everyone's heart skipped a beat.
"Haha, great! We should have found their previous base. I suspect there's information about their residence hidden beneath this tunnel!"
"Don't just stand there! I'll be the first to go down. I want to be the first to know what secrets they're hiding in here!"
"Don't rush. I think we should be careful. What if this isn't a lean place? You know, there are quite a few 'little wild beasts' in this name!"
Lu Yuan strongly agreed with the idea of letting the robot explore first.
After all, if people were to go directly in, who knows what strange things might be going on inside?
If you run into trouble, there will truly be no turning back.
So Lu Yuan skillfully put down his backpack, took out a mini robot from it, and after connecting it, slowly put it into operation.
This robot flies extremely fast and is small in size, but its field of vision is extremely clear. It has a 200-megapixel camera and image stabilization, as well as very strong light, allowing it to see everything around it clearly.
Moreover, its endurance is quite impressive. This drone is made using a new type of fuel cell, which generates little heat, has a long endurance, and doesn't take up much space. It can be said to be the kind of battery material that humanity most desired in its past.
Whoosh whoosh whoosh.
The drone's wings flapped, making a sound, and then it quickly entered the tunnel entrance, its two lights instantly emitting bright beams.
Soon the tunnel was illuminated as if it were daytime. Lu Yuan adjusted his flight position slightly and slowly descended at a very suitable angle.
They kept observing the computer screen and saw that the entire tunnel was surrounded by neatly laid brick walls.
Upon seeing this scene, everyone became even more certain that this place had been inhabited by humans.
So Lu Yuan continued to control the robot to fly downwards, and after a while they finally reached the bottom.
This place consists of several small rooms. Because each room has a door, the robot can only probe two open areas if it cannot open the door.
There are a lot of documents here, but there is no one here. It looks more like a communications base.
Upon seeing this scene, Lu Yuan and the others exchanged glances and immediately made a decision: to go down and see what had happened.
As the strongest person, Lu Yuan possessed extremely strong defensive capabilities, so he was the first to go down, followed by the second and third people.
When he reached the bottom floor, the temperature was noticeably lower than outside, but Lu Yuan didn't care. He turned on his headlamp and then attached a portable light source to the wall to keep the entire room bright and prevent being ambushed.
Lu Yuan, holding a strange pistol, slowly walked towards the first closed door.
He knocked gently on the door, but there was no response from inside.
Then the two people behind him nodded to Lu Yuan, and then Lu Yuan gently pushed open the door and shone the flashlight beam inside.
The room remained quiet until he pushed open the door, at which point a strong, musty smell wafted out.
Everyone frowned slightly and gently fanned their noses with their hands.
After the musty smell had mostly dissipated, Lu Yuan covered his nose and entered the room with the others.
There were several tables in the room, making it look like an office. Each table was neatly arranged with books. Lu Yuan picked up a book at random.
Due to moisture, the printed text inside the book has stuck together, but it is still possible to discern that this is a communications book printed with Morse code.
When Lu Yuan saw this book, he felt very curious. He flipped to the bottom of the book and found that it was a book published before the apocalypse.
Finally, Lu Yuan took out a few more books and looked them over. He found that they were mostly books on communications, so it seemed that this place was a liaison office.
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