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The following is the text of the novel (Author: Long Sword Pitian) provided for you, please enjoy!

"Until then, I want you to swear that whatever you see or hear at any time will not be divulged out. Pen & Fun & Pavilion www.biquge.info Of course, you must not be covetous, otherwise, I will not come to the rescue. Long Xingyu said lightly.

Although he couldn't see the expression of the black-robed man, Long Xingyu knew that the other party must be hesitant at this moment.

"Well, for the sake of my disciple, the old man will swear this oath today. As he spoke, the black-robed man swore a heavy oath in front of Long Xingyu.

"Whew!" Seeing this, Long Xingyu also secretly breathed a sigh of relief, no matter what, the other party was also a Nine Tribulation Scattered Immortal, and he didn't want to expose everything he had and attract the other party's covetousness.

"Please relax senior, I need to take you somewhere. Long Xingyu said immediately.

"Somewhere?" the black-robed man couldn't help but ask, a little confused.

"Well, it's a strange space, and it's also a secret for me. Therefore, the predecessors made such an oath. Long Xingyu couldn't help but explain.

"I see!" nodded, and the black-robed man said that he understood what Long Xingyu said.

"In that case, let's get started. As soon as he saw that the other party understood, Long Xingyu was not a mushroom, so he said.

"Wait, if you control that space, if so, then I also need you to swear, after all, I don't know much about you, and I don't know if you have other purposes. It's not that I can't rest assured, since the old man has already made an oath, then please make an oath too. The black-robed man said suddenly.

He was stunned for a moment, but Long Xingyu didn't have any other impatient emotions, no matter what, he didn't have any friendship with this black-robed man, who would put his life and all the magic weapons on a person he didn't know. Therefore, at such a time, it is necessary to establish mutual trustworthiness. Since you ask the other party to swear, it is normal for the other party to swear by yourself.

Thinking about it, Long Xingyu nodded and said, "It's very reasonable and fair." So, Long Xingyu also made an oath in front of the black-robed man, and this oath is mainly that when the other party does not act against him, he cannot harm the other party.

"That's it. After swearing, Long Xingyu couldn't help but smile slightly.

"Alright, let's get started. As he spoke, the black-robed man hugged the wooden box that was placed on the side horizontally, and then waited for Long Xingyu to move.

Seeing that the other party was very cooperative, Long Xingyu also nodded slightly, and immediately, he covered the entire room with the power of the Yuan Shen, and then, with a movement of his heart, the three of them disappeared into the room out of thin air.

The space changed instantly, and in the space of the True Dragon Ring, in an empty plain area, three figures suddenly appeared, which were Long Xingyu, Mu Tian and the black-robed man.

Looking at the abruptly changed environment in front of him, the black-robed man seemed to be a little stunned, but because Long Xingyu had reminded him before, he didn't show much shock, of course, surprise was essential.

"Well, this is!" At the moment when the three of them appeared in this plain area, all of a sudden, the wooden box that was originally held in the hands of the black-robed man suddenly trembled. Seeing this, the black-robed man couldn't help but feel nervous, and said that Long Xingyu had some means to target him. However, when he saw Long Xingyu's surprised gaze, he knew that the abnormality of this wooden box did not seem to have anything to do with Long Xingyu, maybe it was some kind of reaction to the changing environment.

"What's wrong, what's going on!" Long Xingyu also saw the change in the wooden box, and immediately asked with some confusion.

"I don't know, just after entering this space, there was some kind of change in the guqin in this wooden box, but I don't know what happened. The black-robed man shook his head at Long Xingyu and said.

frowned, obviously such a change was not expected by Long Xingyu, fortunately, the other party did not misunderstand that he did it himself, otherwise things would be a little troublesome.

The two of them thought about themselves, but at this moment, suddenly a string plucking sound came from inside the wooden box, but then fell silent again. This change suddenly surprised the three of them. At the same time, the eyes of the three of them were also a little nervous at the wooden box.

"Goon, is it ready to exert its power here, and is it ready to suck our souls into it? Mu Tian asked a little nervously on the side.

"God knows, but why did this guqin suddenly have such a change. Long Xingyu shook his head, then frowned. But then, he turned his puzzled gaze in the direction of the black-robed man.

"Don't look at the old man, the old man doesn't understand why this happened, in fact, at first, I thought it was you who did it. The black-robed man couldn't help but say bluntly.

"I haven't done anything, and things have always been with you, so how could I do it. Long Xingyu shrugged his shoulders and said.

Nodding, the black-robed man immediately said: "Well, I understand, but I think about it, the reason why this guqin has undergone such a change should have some kind of relationship with your space." But I don't know exactly what kind of relationship, but it doesn't have much to do with the old man, once you save the old man's companions and disciples, this guqin will belong to you, and at that time, even if there are any secrets, only you know. ”

"Hehe!" Long Xingyu didn't say anything else, because he understood that what the black-robed man said was good, even if there was any secret about this guqin, it was only related to him, and even if he understood, he was not obliged to tell others.

"So what are you going to do, this is already your space, you can start with confidence. The black-robed man couldn't help but urge.

"Yes, please come with me. He nodded, then motioned for the black-robed man to follow him, and immediately, the group of three flew towards a building complex in the distance.

In the process of flying, the wooden box containing the guqin shook twice to varying degrees, and at the same time the sound of the qin sounded twice, but the notes from these two piano sounds were increasing, from one note at the beginning, to six notes at the second, and then to nine notes at the third time.

But fortunately, this note only sounded for a moment, and then fell silent, so it did not have a soul-like impact on Long Xingyu and the others.

In this way, the three of them finally came to the vicinity of the building complex, and when they saw the building complex up close, the black-robed man was shocked by the scene in front of him.

Like a world made of crystal and steel, countless buildings with a completely different architectural style from the Xiuzhen Realm appeared in front of him. Dozens or even hundreds of cold buildings are built in a very orderly arrangement. And what surprised him even more was the "iron box" that shuttled back and forth in mid-air, from these "iron boxes", he didn't even feel any fluctuations in the vitality of heaven and earth, which couldn't help but surprise him very much. Although the speed was much worse than that of the cultivator's flight, such a method was something that even he was impressed with.

This is actually a small city built by Long Xingyu in the ring space, and of course, it is also what he thought of when he was bored, so that those intelligent robots who have nothing to do after being produced can build and "play". And the residents of these cities are also those intelligent robots. Here, it can be regarded as an alternative form of civilized society.

As for those things that are considered by the black-robed people to be "iron boxes" and can fly without the help of the aura of heaven and earth, they are the floating cars made by Long Xingyu, the principle of which is the anti-gravitational principle proposed by Long Xingyu on the earth, and its prototype is the floating car that came to pick up his group when he went to the mysterious sect in Kunlun Mountain. However, compared to the test car, the one flying in the city at the moment, both in appearance and in other aspects, is much stronger.

For the scene that appeared in front of him, the black-robed man had no other thoughts except shock. At the same time, he also somewhat understood why Long Xingyu would make him swear to keep everything he saw, after all, the things here are too surprising.

Of course, this is mainly because he has not been in contact with the world of scientific and technological civilization, after all, the cultivation realm of this plane is slightly different from the plane where the earth is located, and it can basically be said that this is the world of cultivators, and for cultivators, those other worlds are just uncivilized worlds, and they rarely pay attention to those worlds.

Long Xingyu flew over the small city with the black-robed man and Mu Tian, and then stopped by a lake not far from the city.

"Where we're going, the entrance is just below the lake, and there's still a way to go, and I hope the seniors know that first. After speaking, Long Xingyu rushed into the lake first.

Behind them, the black-robed man and Mu Tian followed closely, and soon, the three of them came to a huge steel gate near the shore at the bottom of the lake. Then, Long Xingyu led the two to a rock wall not far from the steel gate, after Long Xingyu pressed a stone, the rock wall changed, a boulder suddenly stretched out, and moved down for a distance, and then a cave that only allowed one person to pass appeared in front of the three of them. At the entrance of the cave, there seemed to be a special energy that blocked all the lake water from the outside, and the black-robed man also showed a hint of shock at this, because this was not something that he was familiar with the methods of cultivators.

After the three of them entered the cave, the rock wall also closed, and then, a passage appeared in front of the three of them, and when the rock wall closed, the whole passage suddenly lit up with a dazzling light, which was a high-power electric light installed here.

Walking all the way along the passage inward, after more than ten kilometers, an underground space also appeared in front of the three of them. In this underground space, all kinds of instruments are neatly placed, and in this space, there are many "people" who are busy at the same time, seeing this scene, the black-robed man is even more slightly stunned, but soon, he will not have the existence of life breath on the body of these "people", which also confuses him.

"Are these puppets?" immediately, unable to resist the curiosity in his heart, the black-robed man still asked.

"It's not a puppet, they're intelligent robots, a man-made technological product. But at the same time, these intelligent robots also possess intelligence that is not inferior to that of humans. It can be regarded as 'artificial life'. However, they are a little stronger than humans, and they can be considered immortal if they only need enough energy. Long Xingyu smiled slightly.

Nodding, the black-robed man didn't inquire in detail, but for the young man with so many strange things, he couldn't help but have some expectations, perhaps, this young man can really save his apprentice and companions safely.

Continuing to follow Long Xingyu's steps, the three of them walked all the way, and finally, they also came to the bottom of this underground base, where there is a research room that covers a wide area, and through the transparent door of the research room, you can also see the scene inside the research room clearly. The main attraction there is a huge machine, and it is the "soul transfer" device. It's just that now, this device has been moved by Long Xingyu to the city's underground research base.

In fact, Long Xingyu regarded this city as a base point for the entire ring space, and was developing and building at the same time. And he also moved almost all the good underground here. In addition, even the magic weapons he got were also placed in this base by him.

The three of them walked into the research room, and at this time, an unexpected change occurred, and the guqin that was placed in the wooden box suddenly sounded again, accompanied by the violent shaking of the wooden box, and finally, the wooden box was out of the grasp of the black-robed man. The next moment, the wooden box shattered, revealing the guqin that released a pale pink glow inside.

I saw that the strings of the guqin seemed to light up from time to time, and then as if it had been plucked, a terrifying note sounded.

At the same time, at the other end of this research room, the bronze mirror that Long Xingyu had bid for from the bazaar and planned to conduct research here also flew up from a research platform abruptly at this moment. The pale yellow light also flashed out from the mirror position, and the rhythm of the piano sounded faintly harmonious. A piano and a mirror are all rhythmically rhythmic, and there is a strange resonance between each other. And this scene gives everyone the feeling that they are exchanging something with each other.

Although it was ridiculous to have this feeling, Long Xingyu did not ignore it. Being able to resonate with this guqin, obviously this bronze mirror will not be a low-grade product, I am afraid that its grade is much higher than Long Xingyu expected. It's just that Long Xingyu can't unlock that seal now, so he can't get a glimpse of it.