The emergency brake tried to forcibly stop the elevator, making a shrill hissing sound while shaking violently.

Everyone trapped in the elevator was shocked at this time, but what worried them even more was the crackling sound from the top of the elevator.

The dense sound sounded like hail falling on the roof of the elevator, but what exactly fell was clear to everyone present.

"You shouldn't take the elevator when you're in danger...... Darien's common sense was a little frustrated.

"The problem is that there are no stairs at all." Lin Chi, who was squeezed into the crowd, said loudly.

He didn't know that there was a hidden area under Vault 137, and it seemed that the changes to Vault technology here were not as simple as expanding the Vault.

"Ahh The engineer was still screaming, as if he had been frightened mad.

"If you tell me again, I'll cut your throat." Woods threatened.

With the friction of the brakes, the elevator that was falling at a high speed finally began to slow down, and after a piercing friction sound that made the scalp tingle, everyone smelled a burning smell, and the elevator finally stopped slowly.

Click!

The elevator door began to open slowly, and then what appeared in everyone's eyes was the darkness that could not be seen.

"Is it a bug?" The engineer, leaning against the innermost part of the body and unable to move, asked in a low voice.

"It's because they didn't turn on the lights." Lin Chi said angrily, putting on the night vision device provided by SOG.

The three soldiers of SOG and Crazy Ivan stepped down from the elevator first and began to observe the movements around them, and Lin Chi, who was squeezed and sore, immediately followed and entered the dark corridor.

There didn't seem to be any bugs in the metal tunnel, and you couldn't hear the bugs crawling as they crawled. The metal walls have begun to rust, and it looks like they haven't been maintained for a long time.

INTERVIEWER Could it be that this is an abandoned building area by Vault Tech?

Although there was no sign of life here, after the previous moment of horror, it was impossible for everyone present to take it lightly, and the engineer's body was even trembling, obviously frightened just now.

The passage ahead was much shorter than the passage of "Vault 137" above, and the group walked less than fifty meters before entering a dark living quarter.

The living quarters were as old as the passages, with rust on the metal walls, separated by transparent glass walls. Rather than the bug-infested horror area directly above, this place looks more like a proper shelter.

"Ah...... It's a little familiar. Looking at the scene in front of him with the help of night vision devices, the engineer, who was terrified before, finally calmed down a little: "This seems to be more similar to the graduation project we did." ”

"Are you sure the Vault was built here?" Lin Chi looked up at the dirty ceiling, judging from the speed at which the elevator was descending just now, this place had to be two hundred meters above the ground, to say the least.

Building a shelter in an area 200 meters underground is not something that a few students can do, and even if they had received the assistance of Vault Tec at the time, a simple "graduation project" would not have done this.

"Not so deep." The engineer shook his head: "The location where we built the shelter is only about twenty meters deep, but the layout here is almost the same as the shelter we built in the first place......"

The three soldiers of the SOG began to cautiously search this small construction area, and Lin Chi also clenched his pistol and saber, and walked lightly into the room on the left hand side to check the situation in front of him.

There are several metal tables on display in the room, and there are many chairs piled up around the tables, a bit like a classroom after the students have gone on vacation. It's more like an office or a conference room than a living quarter.

Strangely, there are no human necessities such as food and water, nor the daily necessities that humans often use. It doesn't look like someone has lived in it at all, but the mess of tables and chairs and the black footprints of unknown origin on the floor still point to the fact that someone has stayed here at one time.

"Strange ......" Lin Chi shook the saber in his hand and began to search the "office", looking for possible hidden dangers and clues that could indicate what had happened here.

After searching in this room, he couldn't find any clues, Lin Chi was about to continue searching other rooms, but he heard Mason's voice ringing from next door:

"Commander, we found this."

Lin Chi walked over quickly, only to see Mason holding a small chip in his hand, which seemed to be something like a USB flash drive without a shell.

- Is there a clue to this?

Looking at the strange "USB flash drive", Lin Chi took out the tablet from his backpack, plugged the chip into the USB interface, and successfully read the contents:

The Vault Diary.

Vault Tec is committed to providing residents with a usable hideout in times of nuclear war. At the same time, social experiments are carried out in shelters, where the patterns of human behavior and mental activity under extreme conditions are studied, and usable data are obtained.

"Is it a human experiment......" Reading this, Lin Chi frowned and muttered to himself.

- It seems that Vault Tec is not as "kind" as it seems, and secretly intends to use Vault for experiments. And the refugees who enter the shelter will be an excellent test for them!

So, what kind of experiments were being conducted in Vault 137?

Lin Chi continued to read the content below quickly. It appears that the shelters recorded in this journal are listed in order of number from lowest to highest. And the content recorded in it, even Lin Chi couldn't stand it:

"Vault 13, through a prolonged lockdown, tests the performance of its members in isolation."

"Vault 15 is to contain more people than it can handle, and to cause irreconcilable conflict within it as much as possible."

"Vault 34, with a large number of weapons stored inside, ready for any member to use."

"Vault 42, ensuring that all the lamps inside are less than 40 watts of power, is used to study the depression and mental damage caused by poor lighting effects to Vault residents."

"Vault 55, inside doesn't have any medium for the residents to entertain."

"Vault 56, there's only one crappy comedy for residents to watch, and they can't find any other entertainment."

"Vault 68, with a capacity of a thousand people, only one of them is a woman."

"Vault 69, with a capacity of a thousand people, only one of whom is male."

Before he could read the part of Vault 137, Lin Chi sighed in a low voice: "This company is simply crazy......"

These anti-human experiments of Vault Technologies can only be described as "crazy".