"Um."

Yang Jinxia stretched out her other hand and touched his face. "If you want to be a good person, I will do good things with you. If you want to be a bad guy, I will kill and burn with you."

Chen Xu held her hand tightly, looked into her eyes, and did not speak for a long time.

…

"The damage report is out—" Zheng She's words rang out beside him, "A total of 7,000 robots and 500 drones were lost. There are also 652 signal relay stations."

This was a huge loss for the entire base. Chen Xu arranged two lines of defense, one with 2,000 robots, and three kilometers away, another with 5,000 robots, and with stronger fortifications.

Unexpectedly, the mysterious weapon was so powerful that it destroyed 5,000 robots several kilometers away.

In just this one blow, the robot lost nearly one-fifth of its power.

There were also five hundred drones, one third of which were lost.

In comparison, more than 600 signal relay stations are nothing and can be completely repaired in one day.

However, at this time, no matter how big the loss was, Chen Xu no longer cared.

…………

A few days later, the landing ship returned with a large amount of nuclear fuel, finally solving the problem of energy depletion.

The landing ship's original mission was exploration, and the original plan was that there would be a steady stream of reinforcements, so the amount of nuclear fuel it brought was not much. Fortunately, the supply ship that came later had sufficient fuel.

Chen Xu has been expanding frantically over the past seven years, consuming a huge amount of fuel, which is almost running out of fuel.

Now, with a steady supply of fuel, we can set up our stall without any worries.

This can be considered the second stage. Chen Xu's plan is to create a controllable nuclear fusion power generation device. To achieve this, he must first max out the prerequisite technologies one by one. Looking back, the number of technologies that need to be lit up is simply daunting.

A rough estimate is that it will take ten years.

The underground world might have been frightened and did not send any more troops. Chen Xu did not take the initiative to attack the underground world, but that did not mean he would do nothing. He sent out his clones again and entered the underground world. The main task still needed to be done.

Half a year later, the clone returned safely.

As expected, the forces in the underground world did not dare to take action against him.

This time, the clone who had learned the underground language brought back a lot of information about the underground world. Later, all the major forces rushed to contact him. He even learned the language of the underground world this time, which can be said to be a huge gain.

After retrieving the contents from the intelligent computer, Chen Xu sent the clone to the underground world again.

Just like that, two years later, Chen Xu had emptied out all the secrets held by the major forces in the underground world. It was so simple that it was unbelievable.

According to the records of the "Temple", a thousand years ago, this planet was like the Earth, and humans all lived on the ground. At that time, there were neither clouds covering the entire planet nor strong radiation.

Until one day, the war broke out.

And this was just the beginning. What followed was a hundred years of war.

In this protracted war, in addition to nuclear weapons, there are also various newly developed super weapons, meteorological weapons, genetic weapons, etc., which are being used one after another.

The war caused too much damage to the environment, which continued to deteriorate and became uninhabitable, so countries all began to dig holes in the ground. This is the origin of the underground world.

In the end, most of the small countries were killed, and only a few big countries were left. In order to survive, and because they could not fight any more, the war was declared over. At that time, all humans had moved underground.

In the beginning, the underground of this continent was connected and there were subways. Until an unprecedented earthquake caused a large area of ​​the underground world to collapse, countless deaths and injuries, and at the same time, completely cut off transportation.

The area of ​​District 13 is not small, and it can accommodate millions of people. If everyone worked together at that time, it would not be impossible to reopen the passage.

Unfortunately, due to the selfishness of some people, this option was abandoned. Gradually, it evolved into what it is now.

Chen Xu also got the map of the underground world entrances of the entire continent. The nearest one was 500 kilometers away, which was the entrance to District 12.

"These people are too soft-hearted."

Yang Jinxia looked at the information and couldn't help but sigh. This was her fourth time entering the dreamland, and it was also Chen Xu's tenth year in the dreamland.

"Even such a secret was revealed voluntarily."

Chen Xu said, "If they had a bit of backbone, they wouldn't have ended up like this. I have to say, this food manufacturing technology is quite creative."

"If they hadn't spoken up, the clones wouldn't have been able to find the entrance to the underground level."

In the underground world, there is another layer below, which is full of laboratories, manufacturing plants, and places to grow food. Corresponding to the living area on the upper layer, the lower layer is the production area.

To enter the production area, one has to go through several entrances, and these entrances are occupied by various forces, and outsiders are not allowed to enter. The clone's task is to collect intelligence and will not take the initiative to cause trouble, so as not to delay the mission.

As a result, several forces in the underground world scared themselves and actually confessed voluntarily.

The factories and laboratories on the underground floor are basically abandoned, with only the planting area still in operation.

As the saying goes, food is the most important thing for people. The reason they are able to rule District 13 is because they control the planting areas and the food.

After Chen Xu learned that there was a production area underground, he sent a team of robots to search it. The people from those forces seemed to be frightened and did not even dare to stop them.

In this way, Chen Xu obtained a large amount of technical information from this planet. A large part of it has been lost. After all, it is too old, many computers have been scrapped, and even the storage devices have been completely damaged.

Of course, these things were just icing on the cake. He couldn't even learn all the technology on the spacecraft, let alone the technical information of the underground world. At most, he could use it for reference.

Chen Xu said, "According to our current progress, we will be able to expand the base to the entrance of District 12 in another half a year. I don't know what the situation is like over there."

Yang Jinxia said, "I don't think we need to have too high expectations. Five hundred kilometers is not a very long distance."

(End of this chapter)