Zhao Mu doesn't have many electronic products on his body, but it's just a mobile phone, and the Patek Philippe mechanical watch that Zhang Ling gave him in his hand is not an electronic product.

Before taking out his mobile phone and opening a locker and putting it in, Zhao Mu noticed that his signal was strong and there were very few chrysanthemum mobile phones without signals, and he didn't know when there was no signal at all.

Pulling open the locker and glancing at random, Zhao Mu's brows condensed slightly, and the seemingly ordinary locker had another mystery.

Wood is not simple wood, it is the hardest iron birch tree in the world that can resist bullet shots.

There is a lock on the cabinet, not the popular lock now, it is the ancient traditional sexagenary lock, but the complexity is more than that of the modern combination lock, and it is difficult for people who do not know the password to crack it.

Seeing Zhao Mu's eyes on the lock of the locker, Yang Lao said: "A little guy has made up people and things, and he can set the password by himself, this will not be difficult for you." ”

Zhao Mu was surprised in his heart, the complexity of this thing was no less than the thirty-two Lu Ban locks given to him by Banmen Lu Lao before, Yang Lao actually said that it was made up by a little guy, Zhao Mu was curious about this unmasked person.

Although the lock is complicated, it is very simple to set the password, Zhao Mu quickly figured it out, and casually set up a five-layer sexagenary branch password.

"Alright, let's go!"

Zhao Mu looked at Elder Yang inexplicably. , I don't know where he is going, this room is just a door, there is nothing else, where else can I go?

In Zhao Mu's puzzled gaze, Yang Lao stretched out his hand and printed a small grid next to the locker.

In Zhao Mu's surprised gaze, the lattice was flipped, revealing a window with a faint light and a sense of technology.

First, the palm of the hand was extended to verify the fingerprint, then the face, and then the pupil.

Silently, the shelves moved to the side, revealing a ladder that sloped downward.

Yang Lao took the lead and went down, and Zhao Mu followed.

At the end of the staircase is a high-tech heavy metal gate with no locks.

When Zhao Mu was still wondering how to open this door, the metal door with a thickness of nearly 20 centimeters had been quietly opened, showing a sense of science and technology.

Walking into the door, there is an elevator with silver and white metal, which is very dazzling and sci-fi.

Walking into the elevator, Zhao Mu was shocked by the number of floors in the elevator.

A row of numbers shows from minus 1 to minus 15.

What does this mean?

This means that there are fifteen floors below this elevator.

That's a staggering number.

Based on the average height of four meters on one floor, this is also a height of sixty meters.

This is 60 meters underground, not 60 meters above ground, there is a world of difference between the two.

The difficulty of building to a height of 60 meters underground is far more difficult than that of a height of more than 100 meters above ground, which is a huge amount of work.

Moreover, this is still a secret building, and it is no less difficult to build a human building with a depth of 60 meters in the bustling DiDū in the dark.

What's more, after the building is completed, ventilation and drainage, as well as people's living and building maintenance are also a big problem.

Zhao Mu was horrified in his heart, and only the national government had such a big deal to build such a huge building under the soles of people's feet without people noticing, and let it operate normally.

Yang Lao stretched out his hand and pressed the button on the negative thirteenth floor, but the elevator had not yet started running, Zhao Mu suddenly stood on his head with cold hairs, and the sudden threat of fatal death made Zhao Mu almost run away.

This sudden threat of human death was so real, even more intense than in front of the mahogany gate just now, I don't know how many times, it made Zhao Mu tremble.

"Don't be nervous, now is the time to verify your identity. ”

Hearing Yang Lao's words, Zhao Mu forcibly suppressed the crazy accelerating heartbeat, Zhao Mu believed that Yang Lao had no reason to hurt himself, but even so, Zhao Mu's true qi was secretly crazy overloaded, covering his whole body, even if Zhao Mu could feel that his true qi might not be helpful under this threat of death.

This death threat that made Zhao Mu frightened came and went quickly, and when this threat disappeared, the elevator had already begun to run silently, and the number of floors could be seen changing rapidly.

On the thirteenth floor underground, it took less than ten seconds to arrive, and the silver-white metal elevator door opened with a slight sound, and the eyes were bright.

Looking at the bright space outside the door, and the eyes were full of various items full of science and technology, this was completely unexpected by Zhao Mu, and he was even a little stunned for a while and did not step out of the elevator.

"Let's go, we're here, let's take you to meet some people. ”

Yang Lao walked out of the elevator easily, and it seemed that this subverted ordinary people's knowledge had long been commonplace.

Follower Yang Lao stepped out of the elevator and walked into the outside space, and the various items that flashed with an unknown metallic luster made Zhao Mu's eyes opener.

For all this, Zhao Mu was both curious and shocked.

Although he had all kinds of high-tech cognitions from interstellar civilizations in his mind, Zhao Mu was still surprised by the technologies from the earth in front of him that were completely beyond the cognition of ordinary people.

The space you can see is very large, and you can't see how big the margin is, and the height has exceeded Zhao Mu's expectations, reaching an astonishing height of about eight meters.

If the height of each floor is eight meters, then the height of fifteen floors means that this huge structure is one hundred and twenty meters underground, and the amount of work involved in building this structure is simply staggering.

The space was very large, but Zhao Mu didn't see anyone at a glance, which made the space seem a little lonely.

Walking through this open space, he turned a corner at the end, there was a small room a few meters away from the bend, Zhao Mu finally saw a person, which made Zhao Mu breathe a sigh of relief, the empty space just now gave Zhao Mu a lot of pressure.

In the room, a mentally competent woman in white uniform sat in front of the computer, with a middle-to-upper posture, and the most striking thing was the resolute and cold temperament on her body.

Seeing Zhao Mu and the others, the woman stood up suddenly, her back was straight, her figure was straight, and she said with a standard salute: "Professor Yang is good." ”

Elder Yang smiled and said, "Hello Xiaoice." ”

Then Elder Yang pointed at Zhao Mu and said to the woman named Xiaoice, "I brought Zhao Mu here today. ”

Yes, it's Zhao Mu and the two. The previous young driver stopped at the old man called Lao Zhang upstairs, although no one explained, but Zhao Mu already understood that this place was not a place where he could enter.

The woman named Xiaoice looked at Zhao Mu with a scrutinizing gaze, and then stretched out her right hand to Zhao Mu.

"Zhao Mu, welcome to the Outstanding Youth Department. ”