He raised his head, looked at the two of them, and said seriously: "The body has already forged an extraordinary level, but the spirit is far from reaching the strength of an extraordinary person, do you really think that this can be safe?" ”

"Spiritual level...... Is it? Luo Yunfan replied weakly, "You really have a problem for me, this is a field that our science can't reach for the time being." ”

"The so-called awakened person is to sublimate one's own spiritual level when overcoming the boundless nightmare, so that one's spirit can be strong enough to contact the source of the other side...... That is the starting point of all supernatural powers. Xiao Yao analyzed seriously, "Those nightmares of the law enforcers are the backlash brought by the lack of strong spiritual contact with the origin of the other side. ”

"In short, it's all these mysterious things, I can't fully understand it, don't expect this nerd over there," Su Yunyun said unceremoniously, "Tell me something real, do you have any way to solve it?" ”

"That...... This ......" Xiao Yao was a little unsure of the title, Su Yunyun was too small, but from her previous words, Xiao Yao knew that this person was at least a year or two older than herself, "Little sister?" Did we have some misunderstanding? Where do you judge that I can help you? ”

"Because of Sister Qian'er," Su Yunyun replied, "Although she only has a one-sided relationship with you, she tentatively used her spiritual power to probe your spiritual world during that meeting...... The results were beyond her imagination. ”

That one...... Brown foxes? It's cunning...... Xiao Yao held his forehead, even with Elizabeth's reminder, he still couldn't prevent it despite all his precautions.

"I don't know what Sister Qian'er saw in your spiritual world, anyway, it was some kind of existence that even she, as an exception, was a little afraid of. When she found out about my situation in Jiu'an, she said to me: If there is anyone in the world who is best at dealing with nightmares, it is you. ”

"I can understand the cause and effect......" Xiao Yao sighed, there is no doubt that Su Qian'er sensed the terrifying nightmare in her spiritual world, and then Su Yunyun subconsciously thought that she had unilaterally suppressed that nightmare and became a transcendent person, thus overestimating her strength.

But...... If there was no Yiyi at that time, Xiao Yao estimated that it would have been cold a long time ago, and the grass on the grave was three feet long.

In front of this situation, he couldn't move out of Yiyi no matter what, after all, Su Yunyun was present - although she said that the Su family didn't care about her, but she seemed to have a good relationship with Su Qian'er's fox, although there was only one side, but Xiao Yao's man's perception told him that he could be as far away from her as he could.

Anyway, before you think of a new way for yourself...... Change the subject first.

"Anyway...... I still have one more doubt. ”

"What?" Luo Yunfan asked.

"Why did you do this dangerous research in the first place? What motivated you to touch the world of the transcendent at first as a mortal who was completely unaware of the transcendental realm? Where did the nightmare that was originally your test subject come from before you came into contact with Su Yunyun? ”

Luo Yunfan was unexpectedly silent for a long time, as if he had made up his mind, he opened his mouth and said in a somewhat hoarse voice: "Xiao Yao, what I say next may subvert your cognition - do you believe in the existence of repeated civilizations?" ”

"Duplicate civilization?" Xiao Yao paused for a moment, not that he didn't know the meaning of this word, but this word, which was an unsolved mystery even on the earth, actually appeared so abruptly in the world of Kolo!

Repeating civilization, in Xiao Yao's previous life, this is a conjecture that cannot be proven: in the 5 billion years of evolution of the earth, the creatures on the earth have experienced countless mass extinctions, life and death, and the cycle repeats, so there have been many advanced civilizations on the earth, and Mayan legends are one of them.

Now it seems that the Kolo of this life is afraid that there is a similar legend.

"There are many unsolved mysteries in the world of Kolo. Shoe prints on trilobites, interlaced footprints of humans and dinosaurs, metal vases from 110,000 years ago, iron pots from 300 million years ago, metal balls from 2.8 billion years old, stone carvings from prehistoric telescopes, models of ancient airplanes, nuclear reactors from 2 billion years ago, human footprints in Cretaceous strata, human footprints in Cretaceous strata...... "Luo Yunfan's gushing examples.

Xiao Yao nodded: "I've also heard of it, these are Kolo's famous unsolved mysteries...... But what does that have to do with what we're discussing? ”

Luo Yunfan showed a mysterious smile: "Do you remember how I explained my research to you at the beginning?" I've only used one sentence...... Technology that does not belong to this era. That's not a joke. ”

Xiao Yao's eyes widened, he understood Luo Yunfan's meaning in an instant, another piece of the puzzle about the nightmare experiment emerged, no wonder Luo Yunfan can have such superb technology, even beyond the level mastered by the three major families, no wonder this laboratory is as advanced as a science fiction movie......

"Could it be...... You're taking advantage of other civilizations...... Before primates appeared in this world...... Other technologies for intelligent creatures? Xiao Yao looked at Luo Yunfan in disbelief. I thought that the things in Jiu'an City were part of the truth he was pursuing, but he didn't expect that it would involve something he hadn't thought about...... Or is this part of the truth of the world?

"Well, to be exact, the former owner of this lab." Luo Yunfan shook his head and walked to the depths of the laboratory, "Follow me, I'll show you...... The place of my first experiments. ”

They walked all the way to the depths of the laboratory, and as they went deeper, the surrounding experimental arrangements became more and more old, more and more contemporary, as if they were going back in time, little by little, approaching the place where everything began countless years ago. The road began to slope downward, and as they walked past the end of a long line of labs, there was a metallic wall in front of them.

Xiao Yao stretched out his hand and gently brushed the wall, a rough texture came from his fingertips, the solid surface of the wall was uneven, this was not an ordinary wall, but directly made of molten steel!

"That's right, just like you think," Luo Yunfan nodded, "This laboratory was built many years ago, on the site of some other people's laboratories. I don't know what happened to those people during the experiment, but they ended up in a hurry, sealing off the deep underground laboratory with molten steel, and leaving a lot of precious research materials and experimental equipment in the laboratory above. ”

I didn't think there was such a story here...... Xiao Yao could imagine that when those crimson molten steel poured into the narrow corridor from top to bottom, blocking the only way out of the unknown underground, completely blocking the deeper darkness in the deepest realm forever.

Then...... Will there be people running wild in this long corridor, with molten steel pouring down in front of them, and pursuers in the darkness behind them, shouting to wait wait and let me out, only to be pushed by the ruthless people to pour the molten steel, and the blazing hell locks everything underground.

"They...... Approximately, when? Xiao Yao asked.

"About a hundred years ago? The exact time cannot be determined. Luo Yunfan dragged his chin and thought.

Another hundred years ago...... It's a strange time period, and I always feel like a lot of things I experienced started a hundred years ago...... Xiao Yao frowned.

"In the experimental materials they left, it was clearly stated that the technology they used was the legacy of the previous civilization, and that the tombstone of that civilization was buried in the deepest part of Jiu'an City - unfortunately, probably due to the earthquake, the underground passage to the ruins of that civilization was blocked, and I have no way to dredge it at present. Even though I can't touch the tombstone of that civilization, there is a lot of that civilization's legacy locked behind this wall. ”

"And what about here?" Xiao Yao stretched out his hand and pointed to the poured wall, "Have you opened up behind this?" ”

"It's too difficult to get through this wall, I didn't have that much money at the time," Luo Yunfan shook his head, "However, it's relatively easy to get through the rock layer next to it." It's just that...... We were too young to realize that they sealed this place not to bury the knowledge inside, but to protect the people outside. ”

Looking in the direction indicated by Luo Yunfan, Xiao Yao saw a narrow passage on the side of the metal wall, which was uneven and covered with plant roots, gravel, and clods...... Every few meters, there was a small light on the side of the passage, but the faint light seemed to be powerless against the endless darkness, and it was swallowed up by the darkness after only a few steps.

This place...... Sure enough, it's not very auspicious to look at......

"We were a whole team of researchers, and we even hired a team of professionals to dig up this channel, and when it all started, there were more than a hundred people here." Luo Yunfan's voice was a little low, "But when we dug through the last passage...... To paraphrase an old friend of mine, the world over there is a dark scroll that belongs to the age of mythology, a demonic curse that mortals should not peep into! ”

"Mourn, if I'm not mistaken, it should be over there...... A lot of nightmares, locked in a small space underground by molten steel for more than a hundred years, they must be almost crazy, and you are just a bunch of mortals......"

"At that time...... Luo Yunfan shook his head, as if he didn't want to recall the memory that was too terrifying for him, "When the dust settled, there were only a dozen of us left. If it weren't for the captain's foreboding at that time and insisting on letting us carry weapons, I'm afraid we would have really ended up in total annihilation.

"It's no wonder...... So the original test subjects of the nightmare experiment were the nightmare corpses that were exchanged for their lives by mortals? ”

"There are actually a couple of Nightmares that have just had their limbs cut off and used as my living research...... Still, I underestimated their vitality at the time, and a nightmare with only its torso remaining, escaped...... Thanks to this, I was able to get to know Yunyun. ”

Su Yunyun, who was walking in the front and leading the way, snorted softly, and the cat's ears trembled, indicating that she was listening.

"Your companion ......"

"We buried the dead, and the living chose to continue our research – an opportunity that our companions had bought with their lives. Remember Berserker? He was the captain of that professional excavation team. And the executioner ...... The only daughter of the leader of the research team, she has nothing to rely on but us after her father's death. ”

"I repeat, you guys are really, a bunch of respectable guys." Xiao Yao said very seriously.

"Thank you." Luo Yunfan said briefly, walked with his head down, calming his mood.

After walking back into the darkness, the dazzling orange-yellow light made Xiao Yao's eyes narrow, and he heard Luo Yunfan's solemn speech: "Welcome to, another era of civilization." ”