By the time the fingerprint check has passed, the interior lighting of the elevator leading to the safe house below has been lit up.

Sun Cheng frowned slightly, but didn't say anything.

The elevator is not spacious, it can accommodate up to four people at the same time, and it has to be chest-to-back to stand down.

But this is also out of concealment considerations, after all, to build a safe house under a villa that has been built, you have to avoid opening various infrastructures in the community and the villa, such as underground fiber optic cables, drainage and sewage pipes, gas floor heating pipes, etc., and the space is naturally limited.

Walking into the elevator that was not very spacious with revenge, Sun Cheng looked inside carefully for a while.

The structure of this elevator is very simple, and there are no bells and whistles in it, and only the four buttons on the left wall control the elevator up and down, which are [Open the Door], [Close the Door], [Up], and [Down].

He first pressed the close button, and saw two thin alloy doors quickly eject from both sides.

After pressing the down button again, Sun Cheng suddenly felt a slight weightlessness in his body, and the elevator immediately descended downward, and before he could come back to his senses, it had already stopped.

"Although it is only about 30 meters from the ground, ordinary explosives can no longer affect it."

As soon as I pressed the button to open the door, the thin alloy door of the elevator immediately popped open, revealing an empty room that didn't look very large.

"Whew!"

Xu was accustomed to Cybertron-style architecture, but when Sun Cheng came to this room, which was more than 30 meters underground, and was made of a bright silver alloy from the floor to the walls to the ceiling, he suddenly felt a sense of security in his heart.

When the elevator doors opened, the lighting on the roof of the room was already on, so he could see everything inside.

The room that came out of the elevator was not very large, at most five meters long, about four meters wide, and about three meters high.

However, the room was empty, not to mention the tables, chairs and benches, and there was not even a single piece of paper in sight.

The safe house designed by Sun Cheng himself naturally cannot only have such a little space.

In fact, the room at the elevator entrance is only a quarter of the size of a safe house.

Without Sun Cheng's instructions, after entering the room, Revenge had already come to the other side facing the elevator entrance without making any stops, where there was an inconspicuous single door, like the entrance of the elevator, which also required him to use his fingerprint or iris to verify before he could pass.

There was nothing to see in the empty room, so he didn't stay in this room of about twenty square meters, but only checked it a little, and walked to the door, used his fingerprint to verify again, and entered the second room.

Like the first room, this one is exactly the same as the previous one, both in terms of size and the materials used in its construction.

Sun Cheng is not surprised by this, because the two rooms in front of him were specially set aside at the beginning of the design, so that when he evacuated from the safe house exposed, he could get something for him.

Soon he used fingerprint authentication again, passed through the password door in the second room, and entered the third room, Sun Cheng looked around and stopped satisfied.

The real safe house has arrived!

From a human point of view, this is definitely a very spacious room.

In order to facilitate the construction, this room also adopts a similar design and construction materials as the previous one, and the overall layout is rectangular, but the area is much larger, about 20 meters long, 10 meters wide, and about 4 meters high.

Like the first two small rooms, it was unusually empty, but it wasn't empty.

In the corner of the space of more than 200 square meters, dozens of large boxes are stacked, and in the center of the safe house, 14 engineering robots of different models are standing there quietly, motionless, as if they have lost energy.

It is precisely in the past twenty days or so that they have built this underground safe house from scratch, and they are the engineering robots that Sun Cheng brought back from the [Transformers Universe] several times ago.

In order to maintain as much secrecy as possible, to prevent the safe house from being exposed.

The soil, masonry and other construction waste excavated during the construction of the safe house were all packed into boxes by the engineering robots, and then taken out by Sun Cheng with spherical space and dumped; And all the materials used in the construction were also transported by him using spherical space.

It can be said that without that magical and abnormal spherical space, unless he didn't care about exposure, it would never have taken him more than twenty days to build such a large safe house underground.

"Very good, very good!"

The last time he returned to the real world, Sun Cheng had been here a few times to carry construction waste and materials, but at that time it was still in the early stages of construction, and even the last time he came in to deliver construction materials, there was no elevator here.

At a distance of nearly thirty meters, he climbed up and down by a nylon soft ladder at that time, and it was also pitch black inside, and he couldn't see anything without the lighting equipment on the engineering robot.

So today is the first time Sun Cheng has seen the true face of the safe house after it was built.

More than 200 square meters of space is already large enough.

The safe house is located 30 meters underground, and it is impossible for ordinary people to find it.

Sun Cheng had long planned that this place would be used as his real-life emergency command center for some time to come, until Base 1 was fully completed.

Thanks to his lack of security, the safe house has a well-developed defense system.

Its outermost layer is a layer of reinforced concrete half a meter back, and the steel bars are all reinforced steel used in Base 2, and even the cement is the composite cement he bought in the real world; After that, there is a layer of 20 centimeters thick reinforced alloy plates, and there are six alloy pillars equipped with shock absorbers in the main space, as long as it is not a large ground-penetrating missile, or a strong earthquake of more than eight degrees occurred in Nandu, ordinary explosives will not affect this place even if they explode directly above.

The safe house has independent power supply, central air conditioning and complete ventilation system.

After a while, after the commissioning is completed, Sun Cheng will also divide the latest combat robots that he had just transferred from Base 2 before returning this time, and deploy them here in the safe house.

When he finds time to purchase a batch of emergency stockpiles, such as food, drinking water, canned food, etc., he believes that hiding for several months will not be a problem.