Karel has been staring intently at the holographic projection on the desktop, while Cheng Shi is looking at Karel intentionally or unintentionally, the other four may not have paid attention to the complex expression changes on his face, but Cheng Shi has seen it in his eyes.

At that moment, Cheng Shi seemed to see a trace of fierceness flash in Karel's eyes, it was a gaze full of hatred, but he didn't look at a certain person at the scene, so it was difficult to say whether his gaze contained hostility.

"He's Valker, the senior elder of our Elven Council, thank you for letting me see him again." After watching the video, Karel said calmly and seriously.

Karel's calm performance surprised Cheng Shi a little, he originally thought that this elf old man who had been sleeping for more than three thousand years might have thought of something when watching the video, and then would tell them a long story, but now he just expressed his gratitude.

"Old man, why did you build your house out of crystals? Why do we need to modify the human body? And that underground world out there was dug up by you? Yang Yang asked three questions in a series of curious questions.

Karel was stunned: "Build a house with crystals? ”

"Yes," Yang Yang nodded very naturally, "just above this basement, there is a city built of crystal, but now it is also a ruin, don't worry, you think slowly." ”

Karel's eyes flashed with a hint of ecstasy, and then smiled indifferently: "Those houses are used to filter the sun's rays, just now I said that this planet is not suitable for us to live, and when the underground world outside was not built, we lived in Crystal City." ”

Yang Yang stretched out his hands: "But the crystal city is also underground, and there is no sunlight to shine in?" ”

"Crystal City was originally above ground, and then we moved it underground." Karel replied particularly naturally.

"Huh?" Yang Yang and Barbara said in unison, Cheng Shi also looked incredible, Oldman and North did not react much, it seems that Cheng Shi and the three of them have lived on the earth for a long time, and they have never seen this kind of formation move, giants and mermaids directly moved out of their home planet, and these elves not only moved out of their home planet, but also moved the city built on the surface of another planet underground.

"In order to transform the ecological environment on the surface of this planet, we tried various methods, but in the end, it was difficult to last for a long time, and then we had to follow the example of Planet Parro and build a shelter underground." Karel explained, "It's a pity that even through the thick stratum, some of the sun's radiation is still fatal to us, and then we can only find a way to transform our bodies, and only then can we really get out of the Crystal City." ”

The crystal pillars outside were very harsh on the filtering of sunlight, and at that time, Cheng Shi and Information Bridge speculated that the people living here should be very sensitive to the radiation of the sun, and now it has been confirmed by Karel.

The Underground World was built to better create a livable ecology, and now he has confirmed it.

Everyone nodded knowingly, as if many of the previous questions had basically been explained.

But Cheng Shi still has many mysteries in his heart, such as why did their transformed descendants lose their magical abilities? Is Crystal City's role really just to filter the sun? Why did they set up this lab so deep underground? What the hell is that magic energy reactor that hasn't seen it all for? And when they transform the human body, will they erase the memories of the transformed? If not, then why did their civilization regress? And the old man in front of him, who has been sleeping for more than 3,000 years, is telling a story

, the occasional fierce gaze, what is going on? These made Cheng Shi always feel that Karel was deliberately hiding something, and vaguely felt that everything didn't seem to be so simple.

Although these questions were spinning rapidly in Cheng Shi's mind, his eyes were still a little tired when he saw the elderly Karel thinking about answering so many of their questions, after all, he had been lying in the hibernation pod for thousands of years in one breath.

"Otherwise, it's late at night outside, let's take you out to have a look, don't worry, we have a spaceship, we won't let you follow us," Cheng Shi looked at Karel and said sincerely, "After you go out, find a hotel to have a meal, and then rest comfortably for the night, we have three of your local friends, tomorrow I can let them take you to have a good look at your current world." ”

"I can't go out now, the outside environment may not be suitable for me," Karel's eyes were full of gratitude to Cheng Shi and the others, and he knocked on the table as he spoke, "I still have things to do here, and I'll go to the sleeping pod to lie down in a while......

"Old man, are you going to be the living dead again? What's the outside world playing with now? Yang Yang didn't wait for Karel to finish speaking, and then he was surprised.

Karel glanced up at Yang Yang slightly, and then smiled slightly: "I'm not going to sleep, you don't understand the technical principle of our sleep cabin, people who wake up from the sleep cabin can't eat right away, they need to rely on the nutrient solution in the sleep cabin to help restore their ability to eat, I heard you say that the outside world is so good now, I also want to go out to see, but I have to take care of my old skin first, before I can go to see my children and grandchildren, how can I be willing to go to sleep." ”

Barbara sighed, "I see. Karel was taken aback when she said she was going back to the hibernation pod.

"Okay, do you need us to help you go to the basement?" Cheng Shi got up and said.

Karel shook his head and slowly got up: "No, you have already helped me a lot, I will go down by myself, you can go out and go back to the town to rest quickly." ”

After seeing Karel enter Room 15, the group walked down the hallway from which he came.

And just when they had just walked a short distance, Cheng Shi stopped, he pondered that the purpose of the group entering this underground laboratory at first was to explore the magic energy reactor, but now they didn't see the reactor, but rescued an old man and left, it seemed a little wrong, so he said to everyone: "Let's not rush up first, go and see the magic energy reactor." ”

"Landlord, we don't know each other here, let's come over tomorrow and let the old man take us to see it again, let's go up and eat first." Yang Yang muttered with a sleepy expression.

"Now it's almost dawn outside, and there's nothing to eat when we go out, so let's take a look at the appearance of the magic energy reactor first, let Xiaoqiao scan it, and then go out just to not delay breakfast." Cheng Shi explained with a smile.

Barbara nodded: "With my ability to sense my biological clock, it should be just dawning outside." ”

"Okay then." Yang Yang lowered his head and said unlovingly.

Everyone came to the side of the wall leading to the magic reactor in a blink of an eye, and since there were still people alive here, it was natural that they could no longer violently break down the door or break the wall violently.

With her own memory, Barbara quickly led a few people to find the entrance to the magic energy reactor, and after the information bridge was locked, everyone successfully entered the huge room where the magic energy reactor was placed.

After entering this room, a low roar of machinery first came to everyone's ears, this sound was intermittent but irregular, and then one

Huge ancient equipment came into view.

Even if it's the same place, Barbara's second visit feels noticeably different from the last time. She just felt that the machine was huge and old, but this time she not only heard the sound of the machine running, but also saw the process of its operation, which made her surprised.

The blackened surface of the machine can no longer be simply said to be rusty, it is an indescribable sense of antiquity, accompanied by the vibration of the machine, and from time to time some black material falls off the surface of the machine.

Through the small glass windows on the surface of the machine, only a few faint rays of light can still be seen from the inside, and the operation inside is basically invisible.

"Master, this is actually a mountain-digging device, modified and placed here as a magic energy supply station, they use this equipment to directly convert sunlight into magic energy, and the source of the sun is those crystal pillars outside, there are many crystal pillars around the tentacles that penetrate here, but now a large part of them have been dug up, which may also be a reason for the failure of this equipment." Said after a quick scan of the information bridge.

"What does it do?" Cheng Shi asked.

"The main role is to provide magic energy for this underground laboratory and the Crystal City above, but the energy supply to the Crystal City was stopped thousands of years ago, and now it is mainly for this laboratory." The information bridge replied analytically.

"No, it's a bit of a problem," Infobridge muttered, "This device doesn't just receive sunlight from the crystal pillar outside, it also sends a large amount of a magic ray to the crystal pillar, which is slightly harmful to carbon-based lifeforms, but the exact purpose is unknown. ”

"What?" Cheng Shi's face was full of surprise, "Aren't those crystal pillars filtering rays all the time?" How can the reactor actively deliver harmful rays to it? ”

"This old man who may have to ask him to wake up, this car feels that this is a bit unusual, and it can be said that it is completely unnecessary."

"What about the health of this device? Is it possible to explode suddenly? ”

"Impossible, don't look at it looking ancient, in fact, it has been running at low power, if it weren't for a lot of crystal tentacles connected to it were cut off, its operating power could be lower, although its structure is very complex, but it has a strong self-repair ability, the car detects a lot of parts for replacement in its host, and its self-test program, in fact, is actually detecting and repairing damaged crystal tentacles, but obviously many crystal tentacles cannot be repaired, so it will intermittently stop repairing, But its core host never went down. ”

Cheng Shi looked incredulous, and just as he wanted to ask again, Yang Yang and North began to shake his left and right arms vigorously, and the two of them wanted to go up to eat.

"Xiaoqiao, I think there is a lot of space here, can you transform here?" Cheng Shi said helplessly.

Without saying a word, the information bridge immediately found a vacant land on its own and transformed it into a magic car.

After the five mermaids got into the car, Cheng Shi lay on the steering wheel and said absently: "Go back to the town." ”

The next second, they were on a small hillside.

This is the small hill that Tony and the three of them last passed through when they brought the five of them to the town, and the information bridge probably felt that this location was relatively hidden, so it directly teleported to this coordinate.

"Xiaoqiao, I remember that your quantum storage box contains a lot of stones picked up by Yang Yang and North, you have time to check them and see if those stones have the ability to filter the sun's rays." Cheng Shi gave it a task in the spiritual connection with the information bridge.