The entrance to this basement was very narrow, and the stairs had become slippery due to years of dampness, so everyone walked inside in turn, and the insect Ting, who walked in front of Lu Su, lit it with a faint blue flame.

About five meters deep, there was a stone door with an iron handle that could be pulled, which was badly corroded. After all, this is a tourist attraction, and so is the basement, and Lu Su estimates that this door is usually not open to tourists. The stone door had been opened by the people in front, and inside was a space five meters long and three meters wide, and everyone was crowded inside, and it was stuffy here.

Lu Su closed his eyes and launched a palm reversal, no one had been here in three days, so he couldn't help but be a little skeptical about the claim that this was the entrance. At this time, the person in front of me said noisily, "Shine the lamp!" ”

"Who has the lamp, who has the lamp?"

"Little girl, yes!"

"The little girl's light isn't bright enough."

"Who's farting!" This last sentence was said by Jinduan.

It seemed that they really didn't have a lamp to use, so Lu Su copied an eagle-eyed flashlight and handed it over, Dai Xue spread out a piece of paper on the ground, and a demon slayer next to her held a lamp to illuminate it, and everyone gathered around her.

"Before going down, it is necessary to explain the structure of the entrance. This underground base, of all the people present, only four people have been there......" Needless to say, these four people must be Yan Chop Butterfly, Kinoshita Cicada, Forging Armor and her, she said while drawing on the paper, "The underground base is three hundred meters under our feet, and the entrance is roughly like this. ”

She didn't draw a door, but more like a big cog, and someone whispered in amazement.

"There's a cylindrical pillar that goes all the way into the ground, but it's not a passageway. This post has two eight-spoke gear-like things like this at the top and bottom of it, one clockwise and the other counterclockwise, and can move up and down, and the two 'gears' can meet right in the middle of the spindle. And these two 'gears', in fact, each 'tooth' is an entrance room. ”

After listening to her explanation, Lu Su was also surprised, if it was according to this proportion, wouldn't this entrance be incredibly big! Such a huge thing was actually at their feet.

"When we go down from this room, we can enter these rotating entrance rooms. In fact, there are eight external entrances to N City, and where we are now is just one of them...... However, it is important to note that only one of the eight rooms is a 'real entrance room', and when we enter the 'real entrance room', the big gear will turn down to the center point of the spindle and stick to the 'gear' below. Similarly, only one of the eight rooms below is a 'true entrance room', and once inside, the big gear below turns downwards and takes us into the underground base. ”

"You say there's a real entrance room? What about the other seven? Is it a fake entrance? Someone asked curiously.

"It's a fake entrance with a trap, and if we go wrong, not only will we not be able to descend, but we will die inside...... If you're lucky, you'll be trapped inside if you don't get killed by the trap. She smiled.

The upper and lower eight rooms will rotate in reverse, so that there are sixty-four combinations, and only one of these sixty-four combinations can actually enter the underground base. What is this? The gossip array of modern technology?

"Do you know the real entrance room?" Lu Su asked.

Dai Xue shook her head: "It's because I don't know that I explained the situation to everyone." ”

"It's actually not that hard!" Lu Su said, "I can see the situation in three days, and we will go down wherever they go through the entrance." ”

Kinoshita Cicada said, "It's useless! The so-called mechanism is not a mechanism that is commonly understood, the physical structure of these rooms is exactly the same, even the configuration inside is the same, and each room has an intelligent defense module that can be loaded and detached, which is called a mechanism. They now control the main computer, and we don't know where to lay out the entrance. ”…,

"We only have a 1 in 64 chance?"

"Yes!"

"Wait, what if there's no real entrance? How do you solve all the mechanisms? ”

"No way, because of some permission issues, there must be a safe entrance, so you can rest assured!"

"Rest assured, there is a 63 out of 64 chance of dying inside!"

Kinoshita smiled.

"How did the injury break through at that time?"

"Employing people!" "He controls the citizens of the city, uses the lives of these people to find the way, and has plenty of time. ”

This is really a terrible arrangement, the total number of them is less than fifty at the moment, and even if there are so many people, it is impossible to use such cruel methods.

A group of people talked in a low voice, and some people retreated, and then Kinoshita Cicada said, "Lu Su, come here!" ”

He walked over, Kinoshita Cicada knocked on the wall, a brick opened, and it was actually like a drawer, there was a white plastic bracelet, Kinoshita Cicada put it on his right hand, pointed his wrist at the wall, only to hear the sound of "Di Di Di" on the bracelet, and the wall suddenly "clicked" and cracked, retreating to both sides.

There was an eerie aura to it, like a cellar, and it looked like no one had used this entrance in a long time. Below is a staircase, and Yan Chop Butterfly says, "Go!" And they went down after him.

The cicada standing on the side stretched out his right hand and said to Lu Su, "Help me remove it." ”

"Inverted!"

After the white plastic bracelet was offset, Lu Su asked, "Is this thing the key?" ”

"Well, people who enter the base should carry it with them all the time, for safety reasons, forcibly removing it will trigger an alarm...... By the way, I'm curious, why can you make things that exist disappear too? ”

"As long as the object of the reversal is not itself, for example, if you take your sleeve as the object, there is no such thing in front of the sleeve, just turn the sleeve upside down to this state."

"I see, you really know how to use it flexibly."

"Small."

Jin Duan poked Lu Su: "The two of you will appreciate each other, let's go." ”

"Oh."

"Miss Jin, wait a minute, your boyfriend is going to borrow it from me."

"Take it."

Lu Su didn't understand Kinoshita's words, but he didn't answer when he asked.

They went down the stairs, because the entire N city was black, and it was also dark underneath, but by the flashlight swaying around, they could feel that the space here was very huge, and if they compared it with the buildings above, they could probably swallow a small western-style building and the flower flat attached to it.

There was a door in front that opened on both sides, and Lu Su said, "You also need a bracelet to open this, right?" ”

"Indeed, passwords, fingerprints, and iris are also needed, and they must be above the vice-team level to be useful...... But these are extraordinary times, and they can only be opened by extraordinary means. ”

"Extraordinary means?"

Kinoshita raised his right hand, and Lu Su immediately understood what he meant.

Dai Xue walked towards the two: "Captain Mu, Lu Su, it's up to you to open the passage." ”

"Wait! Why me? Lu Su asked.

"You weren't there when we planned to break into the plan, so I can't blame you."

"At least explain it now."

Dai Xue took the flashlight and asked Kinoshita Cicada to hold the entrance diagram she had just drawn, and said, "There are two sets of plans, one is to go down from the spindle and find the control computer; The second is to go down from the outside of the spindle and find the control computer. ”

Kinoshita added: "In order to deal with special situations in the underground base, the local control computer has a higher priority than the main control computer, that is, if you find the computer that controls the entrance, you can force the passage to open and let everyone enter smoothly." ”

"You're talking so much! But I'm still puzzled, how do you get in from the inside and outside of the spindle, through the wall? ”…,

"Yes, through the wall!" Kinoshita said.

"What's going on with the two schemes? Whether the spindle is solid or hollow, and how does the spindle move outside, this thing should be three hundred meters high. ”

"Because we have limited knowledge of this place, we have two options, and if the spindle is solid, move it from the outside of the spindle, in which case this may be used."

She lifted a bag of things, parachute! Going three hundred meters underground with a parachute is a crazy idea that has never been done before. Also, since the two large "gears" can be rotated flexibly, they must be in a huge hollow space, not buried in the earth.

"Hey, where did you get the parachute?"

"The artifact, with the date of production on it, 1919 MadeInChina." Dai Xue said seriously.

"Damn, the parachute of the Republic of China!"

Kinoshita Cicada laughed: "There is always a way to go down, if it doesn't work, we will bungee jump." ”

"It's still more reliable to bungee jump!" Lu Su nodded and said, "By the way, what am I going down for, protecting Captain Mu?" ”

"It's not!" Dai Xue said, "The decipherment of the local control computer is done by Captain Mu, and you are allowed to go down for two reasons: first, if you encounter any material form of mechanism along the way, you can resolve it most conveniently; Second, there are only three chances to enter the password on the computer, so ......"

"In case of failure, I'll reset it immediately?"

"Yes!"

"Electronic things, I may not be sure, if the signal is sent, what is the use of reversing the terminal?"

"There are a lot of specific things, and there are too many things that I don't know about below, depending on the situation, my decipherment methods are not so bad." Kinoshita Cicada said, "Anyway, it's safer to have you." ”

"Okay, I'll go!"

"Let's get ready, let's get going!"

(PS: I originally wanted to use CAD to draw the entrance diagram.,Actually, I also drew it.,It's in the post bar.,If you don't understand the text explanation, you can take a look.。 But the tragedy is that the original plan was to draw a three-dimensional diagram of the entire underground base, but it turned out that it took a busy night to draw an entrance, which was really not professional enough, woo! ）