While Chen Gong nodded slightly, his spiritual sense spread, but he obviously felt a strong suppression, but even so, he could faintly feel that among the surrounding trees of this Vault Pavilion, there were several powerful auras hidden, and he thought that it should be the demon guards who were responsible for the safety of this Vault Pavilion.

"Come with this envoy, the method of setting up the space-time channel belongs to the secret method that cannot be passed on to the clan, and the method of setting up the space-time channel mastered by other circles and clans is incomplete, or it is a secret method of transformation that is cracked by itself, if you want to get a complete inheritance, it is only in this secret pavilion of your clan. Zhang Yu said to Chen Gong, and then walked towards the huge attic, Chen Gong and Zhang Wuxiang hurriedly followed.

When the three of them walked to the front of the Vault Pavilion, three figures immediately swept out from both sides of the attic, but it was three old men in black robes, and the three of them bowed to Zhang Yu.

"Three Pavilion Elders, please open the Vault Pavilion. Zhang Yu waved his hand and said lightly.

Hearing Zhang Yu's order, the three Pavilion Elders who were full of pure demonic qi swept their eyes towards Chen Gong, and then nodded yes, and at the same time pinched the magic trick in their hands, and one after another black magic talismans were punched out from the hands of the three people, and then printed on the closed door of the attic.

With these black talismans, the surface of the gate suddenly rippled violently, and then the gate slowly opened inward.

Seeing the door open, Zhang Yu took the lead in stepping into it, and Chen Gong and Zhang Wuxiang quickly followed.

After stepping into the door, the light became much dimmer, and at a glance, there were rows of neat bookshelves on it, on which scrolls of different colors were arranged, which made Chen Gong a little surprised, after all, in the cultivation realm, it was rare not to use the jade pupil to record information.

However, Zhang Yu did not linger too much in this ground floor, but directly faced the stairs and walked upstairs.

As soon as he entered this secret pavilion, Chen Gong could obviously feel the power of the ban and suppression, his spiritual sense was almost completely suppressed, and these scrolls that seemed to be cute with tentacles were also obviously protected by a secret method similar to the folding space, if he wanted to reach out and get it, even the Da Luo Golden Immortal would be extremely difficult, and the Taiyi Golden Immortal would need to spend a lot of effort.

This Vault Pavilion had a total of three floors, and under the leadership of Zhang Yu, Chen Gong and Zhang Wuxiang walked all the way to the third floor before stopping.

The area of the third floor of this vault pavilion is not large, at a glance, there are very few bookshelves for storing scrolls, and it seems very empty, and there are strong energy fluctuations coming from the four corners of this layer, and the things placed there obviously have other special protections in addition to the previous spatial means.

"You can't mess with things here, or you're going to get into a lot of trouble. Zhang Yu reminded Chen Gong that he obviously saw the curiosity in Chen Gong's eyes.

After saying this, he walked to the central area of this level, where there seemed to be nothing, but as he got closer, it revealed a noticeable spatial distortion, and then after he continued to pinch the spell and play the spell, a black magic crystal the size of a football was revealed.

Demon Crystal Chen Gong had obtained a few pieces, but compared to the one in front of him, there was a world of difference in size and purity. The piece of magic crystal in front of him was suspended in mid-air, and the whole looked like a kind of pure black, but at a glance, he could feel that under this pure black, there were countless mysterious runes swimming in it, which was an extremely strange feeling.

"This is my clan's inheritance magic crystal, if you want to obtain all the secret methods on the third floor of this secret pavilion completely, you must go through this inheritance magic crystal, and if you only obtain those related scrolls, you can't understand any of the information recorded in it at all. By obtaining information through this inheritance magic crystal, not only can we get a complete method for setting up a space-time channel, but we can also get the opinions and ideas of some of my demon clan's predecessors and powerful people on the improvement of this secret method. Zhang Yu smiled faintly.

Hearing Zhang Yu say this, Chen Gong's eyes suddenly had a bit of expectation and enthusiasm. Of course, he also admires this inheritance mode of the demons, those scrolls are like a book of coded messages, and this inheritance crystal is a decoder, these two are missing, and they can't get the secret method recorded by the demon in this secret pavilion. At this time, Chen Gong was a little lucky, if he didn't choose to get the method of erecting the space-time channel in this way, but chose to forcibly take it or steal it, it is estimated that the scroll he took out would only be able to read a few times in the book of heaven, and then it would be useless at all.

Of course, this time, through this inheritance of the magic crystal, the secret method of erection can be attached, and some opinions and ideas of the predecessors of the demon clan can be attached, which is completely unexpected for Chen Gong, obviously this is Zhang Yu's preferential treatment of his room.

"Thank you, Demon Zhang. Chen Gong thanked Zhang Yu with his hand.

"Immortal friends can be regarded as saving Wuxiang's life, which can be regarded as a little reward for the envoy, after all, the envoy has no children and no daughters under his knees, and only such a niece is the most important. Zhang Yu waved his hand.

Zhang Wuxiang on the side was silent, obviously Zhang Yu's fatherly love reminded her of the biological father who should have fulfilled this duty, but only cared about the interests of the clan.

Zhang Yu didn't wait for Chen Gong to say anything more, and continued: "Okay, you can put your hands on this inheritance magic crystal, and then pass in the spiritual sense, you will be able to obtain the most complete secret method for setting up the space-time channel." The prohibition here is to completely suppress the release of spiritual consciousness, and it can only be transmitted through physical contact. In addition, this is the important place of my demons, so this envoy will always stay here. ”

Chen Gong had no objection to this, the Secret Treasure Pavilion, just by looking at the previous protective measures, he could imagine how important this place was, Zhang Yu was able to let him enter here, and let him accept the most complete secret method inheritance, which was already a great favor and an exception.

Slowly stepping forward, Chen Gong exhaled lightly, and gently placed his hands on the pitch-black magic crystal ball, then his eyes slowly closed, and his spiritual sense also poured out of his palm, and then passed into the magic crystal ball.

As soon as the spiritual power entered the magic crystal ball, Chen Gong's body trembled suddenly, and there were rumbling explosions in his mind, and the huge flow of information was like a tide, constantly surging towards Chen Gong's sea of consciousness, which was different from the spiritual sense scanning the jade pupil Jane, it was a process of active acceptance, but this time it was a passive acceptance, and the amount of faith was extremely huge, even with Chen Gong's ability, he felt a little stinging in his head.

This is indeed the most complete inheritance of the secret method of setting up the space-time channel, whether it is the selection and replacement of materials, the principle and change of the formation, the formation and maintenance of the channel, all starting from the most basic foundation, no matter how big or small, and even some of the ideas and advantages and disadvantages of all aspects that have not been used for the current erection are completely recorded in it, so this inheritance process has been carried out for nearly a day.

In the past nearly a day, Chen Gong's body was like a sculpture, not moving at all, if it weren't for the fact that his breath was quite normal, I am afraid that even Zhang Yu would think that he had something unexpected in the process of inheritance.

Because this inheritance magic crystal has a characteristic, that is, in the process of inheritance, it will independently judge the limit that the person who accepts the inheritance can bear, and then select the content of the inheritance according to this limit.

And Chen Gong has nine primordial infants, no matter what he does, his efficiency and ability are nearly ten times that of others, and the limit of his inheritance is almost ten times that of others, and this inheritance magic crystal has passed on all the contents of the method of setting up a space-time channel.

In the empty attic, the pitch-black magic crystal ball continued to emit a bright and strange black light, and next to this magic crystal ball, Chen Gong still maintained the posture of stretching out his hands, but at this time, around his head, there were faint black runes flowing, which looked very mysterious.

"How did it take so long? I remember the last time an elder of my clan accepted the method of setting up this space-time passage, it only took an hour. Zhang Wuxiang looked at Chen Gong, who had been motionless, and finally couldn't help but speak.

"That elder is just going to the immortal realm to set up a simplified space-time channel, and he has not accepted the complete inheritance at all, let alone the experience and improvement suggestions of the ancestors. My demon clan has existed for so many years, speaking of which, the ideas and improvement suggestions that those ancestors once put forward, the huge extent of these contents is greatly beyond the method of setting up the current space-time channel itself. I'm now asking him to accept as much as he can, but I didn't expect him to have so much potential. Zhang Yu said lightly.

The two of them were talking here, and suddenly there was movement at the magic crystal ball, the black light emitted from the sphere was rapidly dissipating, and the black runes on Chen Gong's head were rapidly fading, and he himself slowly opened his eyes.

"Awake?" Seeing Chen Gong open his eyes, Zhang Yu also stood up and said with a smile.

Chen Gong's body froze in place, as if he was still sorting out the extra huge information in his mind, so after a long while, there was a little agility in his slightly dull eyes, his eyes turned to Zhang Yu, nodded with a smile, and then clasped his fists and said, "Thank you Zhang Demon Envoy for your generosity." ”

Chen Gong clearly knew that the benefits he could get by receiving the secret method of setting up this space-time channel were actually extremely limited, but the opinions and assumptions of those demon ancestors were extremely rare and precious experiences, and he could completely touch the same and get great benefits. And he and Zhang Yu are not particularly good friends, and it can even be said that there is a fundamental conflict of interest between the fairy world and the demon world, and there are many people in the fairy world who are not clear, but Zhang Yu himself must be extremely clear, so to be able to do this far, Zhang Yu is indeed worthy of his solemn thanks.

For Chen Gong's gratitude, Zhang Yu waved his hand casually, and said with a smile: "The secret method of setting up the space-time channel should be in the mind of the immortal friend now, right?"

Chen Gong smiled and nodded, his mind moved, and the process of setting up the space-time channel appeared in his mind, no matter how big or small, all of them had detailed records and operation methods, and even in these steps, he could also see some of the opinions and comments of some demon ancestors on this step.

"It turns out that this space-time passage can be passed in both directions, and the speed can be even faster. Chen Gong knew in his heart that the space-time channel, which was now extremely important in the fairy world, was just a simplified version taken out by the demons, both in terms of function and convenience, and it was greatly discounted, thanks to the fact that all the forces in the fairy world regarded this simplified version of the space-time channel as a treasure.