After a few laps around the huge No. 3 safe house, Sun Cheng walked to the center, and first took in all the engineering robots that had been closed by revenge after completing the construction work into the spherical space.

After completing this, he walked to the corner of Room 3 again, and collected the dozens of boxes stacked there into the spherical space.

These boxes are all standard boxes one meter high, one meter wide, and two meters long, which he used to weld with steel by the industrial robots at Base 1 after he returned to the real world last time, and are specially used to transport construction waste and construction materials.

Now part of it is empty, part of it is filled with construction waste, and part of it is filled with cement, steel bars, alloys and other materials that have not been used up.

The safe house has been built, and the rest of the land is to add things to it, and the unused materials should not be used.

"More than 200 square meters...... It's a shame to just store some supplies for emergencies...... Maybe you can put some furniture and office and living equipment here......"

On weekdays, Sun Cheng doesn't live in a safe house.

However, the experience in the [Transformers Universe] has made him more and more cautious and prepared for a rainy day, and he is now more accustomed to preparing for everything in advance.

Known as the safe house, it can not only provide security for Sun Cheng when necessary, but also ensure that he can successfully escape in times of crisis.

Therefore, the [safe house] naturally does not have only one entrance and exit.

After staying in Room 3 for a while, Sun Cheng walked to the other side directly opposite the entrance.

There was a coded door on the wall that was identical to the previous ones, and revenge was already waiting there.

Sun Cheng squatted slightly this time and aimed his right eye at the display screen.

Not long after, a scanning aperture appeared on the screen again, shooting a non-dazzling green light aimed at his right eyeball, which disappeared in less than a second, followed by the words 'Permission to pass' appeared on the screen.

"Click!"

The code door opened, and he walked into the last safe room without hurrying, and after only slowing down slightly to check in room four, Sun Cheng walked straight to the code door at the end of the room.

This safe house is exactly the same size and layout as the first and second rooms at the front, and it is a room specially designed by him to be stationed in the future to be responsible for guarding the combat robots.

Walked straight to the end of the No. 4 safe house, where there is also a password door, Sun Cheng, who can already use fingerprint decoding very skillfully, stretched out a finger, after verifying his fingerprint, the one in front of him is completely different from most of the password doors in the safe house, and what appeared in front of him after opening it was an elevator again.

However, the person stood in front of the door of the elevator, but Sun Cheng did not open the elevator this time.

The exit on this side of the safe house leads to another villa in the community, and after deciding to build a safe house, he inquired about the sale of villas in the vicinity, and finally chose another villa located directly behind the villa he originally bought, just separated by a row of villas.

Because it was purchased in the name of someone else, as long as Sun Cheng didn't go in and out of there at will, even if someone was investigating him, he wouldn't know the secrets there.

He quickly turned around and walked back in the direction he had been going, not that he didn't want to go up and check it out.

It is the house that Sun Cheng bought not long ago, and in order to cover up the fact that they built a safe house underground, it is also being renovated with great fanfare.

The decoration there is not done by engineering robots, but a decoration company engaged in the design of high-end apartments and villas that he specially hired in Nandu.

At the beginning, because he didn't know how long the safe house below would need to be built, and it was also to cover up the noise that might come from the construction below, Sun Cheng spent a lot of money to have the decoration company almost redesign the villa in the back from the inside out, so that even if the nearby residences heard the noise, they would only think that it was from the villa that was being renovated behind, and would not suspect that the sound came from the ground.

It is conservatively estimated that the renovation of the villa at the other end of the fourth safe house will last at least two months or so.

During this time, there should be a vigil there, after all, the materials purchased for the decoration are very valuable.

So if it is not necessary, Sun Cheng will not expose the secret of that villa.

Soon he returned to the main building of the safe house, and looking at the empty space, a wave of unease welled up in his heart for no reason.

"Am I not thinking about it......"

Frowning and thinking for a while, he went through all the experiences after this return, Sun Cheng still didn't find the reason for his uneasiness, and after thinking about it, he walked to a corner of the house, and the void stretched out his hand and touched the front.

The next moment, a special container container with a height and width of three meters and a length of about ten meters suddenly appeared in Room 3.

“…… It's just that there's always nothing wrong with an extra layer of protection......"

Sun Cheng naturally knew what was in this container, and all of them were new combat robots made by Base No. 2.

Originally, he wanted to go to Base 1 in two days, so that after the defense woke up these combat robots, he would debug them by the way and bring them back to the safe house for deployment.

But this will feel uneasy for no reason, and it will make the suspicious Sun Cheng feel hearted.

I walked two steps quickly to the left side of the container, but the ground was the same as the other sides of the container, not only could I not see any door locks, but I couldn't even see the traces of welding.

If you want to say that it is weird, it should be a slightly protruding alloy block in the center of the box.

"Revenge, open this lock...... The password is still ......"

The protruding alloy block on the container is a safety lock.

It's just that unlike those combination locks on Earth, this security lock is a special combination lock produced by Decepticon engineers at the request of Sun Cheng with the manufacturing process of Planet Cybertron.

Its interior is so sophisticated that to open the lock without brute-force damage to the cabinet, it requires a nanometer key to insert and enter the correct code into a tiny verification chip inside to open it.

By the way, the microchip inside the safety lock is also connected to dozens of sensors and miniature bombs that are welded to the box, once the temperature of the box is detected to be too high, and someone tries to violently cut the box, it will directly detonate the container in accordance with the reserved safety rules.

This is also one of the means left by Sun Cheng in order to ensure that his secrets are not leaked to the greatest extent.

After all, these special containers were specially made by the Decepticon engineers to facilitate his storage of items in the spherical space.

And most of these items were eventually brought back to the real world by him.

"Yes, master!"

After Vengeance received his order, he quickly walked to the safety lock of the container and stood still, only to see that it stretched out its slender right hand and held it on the slightly raised alloy block, and the tip of one finger immediately lit up slightly.

Although Sun Cheng's eyes couldn't see it, he knew that a nano-sized bone spur had protruded from his vengeful fingertip and inserted it into the safety lock.

He didn't have to wait long, and after a crackling sound of the safety lock, two gaps suddenly appeared on the surface of the surface where there were no welding marks, and they quickly shrank in all directions.

The next moment, there was a sound of exhaust air coming from inside the closed container.

Without Sun Cheng's command, revenge opened the container door for him, and rows of humanoid steel machines like soldiers appeared in Sun Cheng's sight.