The air in the enclosed space was scorching, and the atmosphere was terrifyingly oppressive.

Time passes.

Lei Luo covered every corner of this space with his spiritual power several times in a row, his eyes kept scanning, but he still found nothing.

Eventually.

He took a deep breath and said calmly, "That's right, I am from the Grand Academy of Natural Sciences, the land of the starry curtain in the surface world, and I am known as [Sun Power] Lei Luo. So, who is Your Excellency?"

The Canary Painted Skin Demon also looked around for a long time, but found nothing.

"Ahem, you can call me an observer. ”

Observer?

Lei Luo looked sideways at the canary, and the canary shook his head slowly, obviously not having heard of the name of this dark creature, and it was not an existence similar to the Nine Shades.

After coughing lightly, the observer continued, "So, honorable guest of the surface world, what is the purpose of your visit?"

"For the sake of the continuation of anthropologist civilization, I am here to gain knowledge here, knowledge about the power of time and space, and to avoid repeating the mistakes of countless civilizations annihilated in history. ”

Lei Luo didn't hide anything, and responded directly.

"That's right, ahem,"

A faint voice, after a short cough, a sigh.

"I have been assigned here to guard the rebels in this dark realm for more than 1,200 years, and during this time I have never stepped out of this vast valley, and I have been with these rebels all day long, doing everything I can to stop the spread of this substantia nigra. A hundred years ago, a powerful man who had escaped from the surface world told me the news of the crusade to the Land of Nightfall, and stories I had never heard before, and brought me back to life and arranged the civilization hierarchy. ”

The so-called substantia nigra layer is the crack medium of the Wall Shadow Demon.

Well?

The arrangement of civilization levels?

Lei Luo's face became solemn.

Because since the other party can say this kind of thing, it means that the other party is a first-to-change person who has the ability to change the history of civilization, and it has only been more than 20 years since the academic community proposed the hierarchical arrangement of civilization.

In other words.

The other party is likely to be the underworld itself, but it lacks the resistance environment of the surface world, and the god-based faith ruling organization here is far more harsh and powerful than the Aurora Middle-earth Holy See.

"Needless to say, the concept of level 0 primitive obscurantist civilization is the use of wheels, the concept of level 2 civilization is the use of flying flotation devices, the concept of level 3 civilization is the use of high-energy anti-gravity devices, and the concept of level 4 civilization is the preliminary application of curvature space-time, so ...... Honored guest from the surface world, what level of civilization do you think you call the human academic world?"

"Level 3.5. ”

Lei Luo said quietly: "The human world is divided into two parts: the Holy See and the academic world, and as early as hundreds of years ago, anthropologists have developed a large-scale anti-gravity war platform, and with the increasing maturity of anti-gravity technology and energy technology, the war platform is getting larger and larger, and its functions are becoming more and more complex, which is enough to rival the god-level existence, and in recent years, the door has been opened to explore the knowledge of curvature time and space. ”

"Is that so......"

The voice was muttered in a low voice, as if it contained a hint of remorse.

Suddenly.

Lei Luo said: "Your Excellency's method of arranging civilization levels by breaking through the limitations of time and space, I have also heard similar assertions from another human being, and it seems that this method of civilization level screening is more objective, because as far as I know, this is the way that a civilization above level 6 judges the civilization level. ”

"A civilization above level six?"

There were also voices, filled with some disbelief.

Because according to the way of judging the level of civilization by breaking through time and space, the underground world is actually only a level 2.5 civilization, and the status of the dark creatures in the underground world is even far lower than that of the scholars of the landmark world.

The reason for this is that, on the one hand, the academic knowledge level promoted by scholars has surpassed that of the dark creatures, and on the other hand, the rigor of the divine system of the underground world is far greater than that of the Holy See.

Lei Luo naturally didn't respond to the meaning of this sixth-level civilization.

He said slowly: "But in the human academic community, I have also published my own set of cognitive systems for judging the level of civilization, that is, to judge the level of civilization by mastering and using the law, the first level of primitive obscurantist civilization is also needless to say, the second level is the temple civilization, the third level is the divine civilization, the fourth level is the cataclysmic civilization, and the fifth level is the lighthouse civilization. ”

"So, what about the superman?"

The observer's words made Lei Luo squint slightly.

"Level 6...... Elementary Star Civilization!"

Lei Luo's words not only silenced the hidden observer, but also made the canary look shocked.

It wasn't until a long time later that the observer's voice came again.

"It seems that the progress of your knowledge exploration in the human academic world has far surpassed the dark realm of the underground world, the three dark valleys of the underground world, I have also been in contact with several high-level elders, but I have almost never heard similar words, communicating with your Excellency is better than my painstaking work here for a hundred years. So...... Is the civilization above level 6 that Your Excellency just mentioned also a superhuman being?"

"It's not. ”

"Huh!?"

Observing the stagnation of breathing, he couldn't wait to say, "What kind of civilization is that, where are they?"

Lei Luo said: "Respectfully observing Your Excellency, I have come here for an academic exchange on the knowledge of curvature time and space, but Your Excellency has never appeared, is it a little too contemptuous of me, a guest who has come from afar?"

Belch?

Hehehehehehe.

After a bitter laugh, he observed and said slowly: "It's not that I don't want to show up to meet Your Excellency, but my current form is no longer able to return to the real world, so naturally I can't meet Your Excellency." As for Your Excellency coming to me......"

It did not say anything more about the latter and seemed to think that such a situation was unrealistic.

"So, it seems that Your Excellency is talking to me in the curvature space at this moment, and this kind of space-time technology has surpassed the exploration of human academia. ”

"You ......"

The observer heard.

"You, the human academic community, have been able to maintain the rift in space-time?"

"That's right. ”

Lei Luo said: "However, at this stage, we can only maintain a space-time rift with a diameter of 0.001 cm, and we have not yet mastered the technology to embed it into reality, so naturally we can't talk about communication, let alone master the stable teleportation technology and subspace development technology with the help of curvature space, so I am here in the hope of obtaining the relevant knowledge and technology that the underground world may master." ”

Needless to say, stable conveyor technology.

Subspace development technology, this is a technology similar to a space box, but it is far from being as simple as a space box, but a space-time technology similar to the loft in the air of the ancient relics of Aurora.

Lei Luo suspects that in the base of the captured superhuman metal giant coffin, there is such an expanding subspace hidden!

The most intuitive form of realization of this subspace is that the area of the internal space is larger than the area of the external space, which is caused by the subspace changing the real-world appearance of the space.

"It's a pity that you're a little late, the sleeper who mastered the crack curing technology has died in that war, and it is said that he has been able to solidify a crack of about 10 centimeters and carry out short-distance shallow space-time shuttle, while the space-time technology I have mastered is to expand the subspace technology and expand the space area...... Only 5 cm. ”