Letting the Demon Emperor clone swear with his natal inner demon has no binding force on Xu Changqing himself. Although he will also cause the backlash of the inner demon when he violates the oath, what is different from other clones is that the backlash of the inner demon encountered by the Demon Emperor clone can weaken to an extremely low before affecting the Golden Immortal body, and may even be completely absorbed and refined by the Demon Emperor Seal of the Wanjie Demon Emperor's Seal of the Core of the Demon Emperor.

After agreeing on some cooperation conditions, Xu Changqing swears in front of Guan Lingzi with the natal demon heart of the Demon Emperor clone. When the oath is released, a force of heaven and earth gathers around the Demon Emperor clone, and then penetrates into the body of the Demon Emperor clone and merges into his soul. Guan Lingzi can also feel this force of heaven and earth. At the moment when the power of heaven and earth appeared, there is a little more trust in his eyes, which seems to have regarded Xu Changqing as his own person.

"I'll take the notes of Demon Spiritzi now. When do you want to leave this prison? Go outside to explore the blood pool? Let's call you in advance and I will arrange the way out for you." Guan Lingzi saw that his goal had been achieved and he would not stay for a long time. When he turned around and was about to leave, he turned around and reminded him: "But if you go down the blood pool, it's best to let Wu Tong go with you. He can help you. In addition, I also hope that you don't take risks easily, so as not to die like Demon Spiritzi. After all, we still need to rely on you to lead the way to leave."

"I won't take risks." Xu Changqing seemed to be thinking about other things and responded absent-mindedly.

Hearing Xu Changqing's light response, Guan Lingzi frowned slightly, but did not continue to say anything. In his opinion, it would be useless to say more now. When Xu Changqing goes out to explore the blood pool, send a few more people to follow and protect it. It should be more practical and more useful.

After Guan Lingzi left, he returned to Xu Changqing's prison, but this time he was not alone, and the twin demons came with him, and each of them was carrying a big package. Guan Lingzi walked into Xu Changqing's prison, as if he was very familiar with it, and walked straight to a corner, and then fumbled on the ground for a while, and saw several slightly larger crystals being removed by him, revealing a not-so-large cave. Afterwards, they put the books of the demon spirit in the package into the cave one by one, and put the crystals in place again. The whole process was not covered. After completing all this, they did not say much to Xu Changqing, so they turned around and left.

From beginning to end, Xu Changqing did not look up at Guan Lingzi and others. He always lowered his head slightly, looking thoughtful. He seemed to be completely immersed in his own thinking and temporarily forgot all the movements outside.

The reason why Xu Changqing was like this is mainly because after he just took the oath, he vowed to activate the great way of heaven and earth, formed the power of heaven and earth, integrated into the soul of the demon emperor's clone, and became a shackle of oath. The moment this power of heaven and earth appeared, it aroused his great interest.

Previously, Xu Changqing speculated that the Blood Pool Purgatory was a fake Zixiao Heaven and Earth created by Hongjun through fragments of Zixiao Palace. This world travels outside the three realms of heaven and earth, but overlaps with the three realms of heaven and earth. After that, Duobao clone went to another unknown world by finding the method of the entrance to Zixiao Palace, which was equivalent to proving this bold inference. If we continue to deduce according to this inference, then the product of the three realms of heaven and earth, the Demon Emperor clone, the product of the three realms of heaven and earth, swears in the Blood Pool Purgatory, the pseudo Zixiao Heaven and Earth. Whether it is the natal demon heart oath or the great way oath, the heaven and earth should not react.

Before taking the oath, Xu Changqing did not think of these things. He naturally made a natal demon heart oath according to Wuqitian's common oath. The subsequent appearance of the power of heaven and earth did not surprise him too much. It was not until the power of heaven and earth penetrated into the body of the Demon Emperor and merged into his soul that he remembered the special situation of the Blood Pool Purgatory, and he also felt that the power of heaven and earth produced by swearing in the Blood Pool Purgatory seemed to be somewhat different from the power of heaven and earth produced by his oath in the Kunlun Three Realms.

This feeling of difference is very obvious, but if Xu Changqing is allowed to tell what is different, he cannot tell it clearly. The only thing that can be confirmed is that this inner demon vow is definitely effective. Moreover, because the power of heaven and earth that is different from the three realms of Kunlun will cause unexpected effects when the inner demons are backfired. This effect may be stronger than the expected backfire, and may even affect the three-point soul of the Golden Immortal body.

Fortunately, Xu Changqing did not think about breaking his oath. In fact, he didn't need to wait until he found other entrances and exits. He just needed to know how to leave here silently and enter and exit the cage of this patio, and could send Guan Lingzi and others away. The reason why Guan Lingzi and others could not leave was that in addition to the strict fortifications arranged by the Blood God Sect in the passage, the more important thing was that the endless flow of blood rivers. With their cultivation strength, they fell into the Blood River, which was almost a life-and-death life.

However, these blood rivers and rivers are not a big problem for Xu Changqing. He has ways to resist the erosion of blood rivers and rivers. As long as the opportunity comes, he can take Guan Lingzi and others to leave directly from the bottom of the blood river.

Xu Changqing was not in a hurry to leave the prison and go to the courtyard to find a new entrance and exit. He was going to read all the books and notes left by Demon Spiritzi. With Demon Spiritzi's wisdom and knowledge, since he could see that the origin of this place is related to the ancient prehistoric world and is also a ruin of the ancient prehistoric world, he should also be able to see that this is no longer in the Three Realms of Kunlun, and the countless Blood River Tunnels on the stone walls of the courtyard should also contain a passage to the outside world. Since Demon Spiritzi is studying the things in the blood pool below, he should also look for the entrance and exit in the dark river tunnel of the surrounding stone walls. After reading Demon Spiritzi's notes, he knew the places he had explored during his lifetime and the results of the research, and then he could find a new entrance and exit by himself to avoid repeated useless work.

He took out a book that Guan Lingzi had placed before, and Xu Changqing sat in the same place and looked carefully. However, while he was reading this book, his mind was still different from the power of the vows.

Xu Changqing reads books very quickly, and the books used by Demon Spiritzi as materials are not isolated books. Most of them can be found in the Sutra Gallery in other places. The real useful thing is the annotations written by Demon Spiritzi between the lines of the book. From the content of these annotations, it is not difficult to see a direction for Demon Spiritzi to study the ancient prehistoric relics. The more he understands the knowledge of Demon Spiritzi, the more Xu Changqing admires him, and he is also very sorry that such a genius actually lost to this place. No one knows or pays attention to the results of the research on the ancient prehistoric relics throughout his life. He wanted to be Demon Spiritzi not from the Demon Spiritzi, but to devote himself to the sects of the Xuanmen Dao Sect. Now he may have become famous in the Kunlun realms because of his research on the ancient prehistoric relics. Although he may not be called a master in cultivation, he is definitely worthy of this title in his knowledge.

Xu Changqing had not read other demon spirits to sort out the notes he knew, but the notes left between the lines of the books were already very beneficial. From these contents, it can be seen that the demon spirits' footprints have already traveled all the ancient prehistoric relics in Wuqitian, including some of the prehistoric relics set as forbidden areas by the Demonic Sect. It can be seen that he also has extraordinary attainments in hiding whereabouts and breaking the prohibition array.

Influenced by the classification of immortals, demons, Buddhas and demons in the three realms of Kunlun, Demon Spiritzi also classified these relics in this way. At the same time, he also derived the appearance of the relics when they were complete, as well as the human customs, language and characters of the place where the relics are located, and even restored dozens of ancient methods from some remaining words. Unfortunately, because of the gap between the strength of Demon Spiritzi himself and the understanding of the great way of heaven and earth, the ancient methods he restored were all misunderstood. If someone really practiced according to this, the final result would be that he would be in a devil and his soul would be scattered.

It is not difficult to see from the wear and tear on these books that after the death of Demon Lingzi, his books were read by Guan Lingzi and others, and they were not read casually. The creases in many places showed Guan Lingzi's attention to these contents at that time. Now Guan Lingzi will abandon these books as if he had tried to practice the ancient methods that were restored by Demon Lingzi, and the final result was very bad. However, what Xu Changqing couldn't understand was that Guan Lingzi was not angry after trying for nothing. He destroyed these books and preserved them intact, and there must be a mystery in it.

Although these ancient customs, language and writing have no value to most immortals, demons, Buddhas and demons in the Three Realms of Kunlun, and those ancient methods are even more considered harmful, the value of these things in Xu Changqing is no less than a prehistoric spiritual treasure. Not to mention those human customs, language and writing just fill the gap in Xu Changqing's ancient knowledge. Just the dozens of mistakes and omissions of ancient methods have already made Xu Changqing feel that this trip is worthwhile.

The reason why those ancient methods are all wrong is that Demon Spiritzi filled and modified these methods according to the practice methods of Kunlun Three Realms, and coupled with the shortcomings he learned, all methods are wrong. But this does not mean that these ancient methods are really useless. As long as the extra parts of these ancient methods are removed, the most primitive residual techniques are left, and then Xu Changqing will repair them according to Zhen Yuanzi's memory. Even if all methods may not be able to be fully repaired, it is not difficult to sort out more than a dozen ancient methods suitable for modern people to practice.
Chapter completed!