With Xu Changqing's unintentional help, many demon lords who should have fallen in the demon robbery had a chance to survive the disaster. Some of them might die under the demon robbery, but more people would pass the tribulation safely and eventually enter the realm of the Demon Lord that they had dreamed of. Although this realm of the Demon Lord who was born in the changes of heaven and earth and the help of others could not be compared with the realm of the Demon Lord who eventually achieved through normal accumulation and resistance to the demon robbery, this is after all, the realm of the Demon Lord. Even the realm of the fake demon lord is far more powerful than the realm of the Demon Lord.

In a small place like Black Rock City, so many demon lords suddenly appeared at once. It is conceivable that it will inevitably bring huge unrest to Black Rock City and even the entire Black Rock City. Although this will not immediately extinguish the powerful existence like Black Rock City Lord in the chaos, it will at least make him anxious and hurt his bones. Moreover, other demon world powerhouses who are eyeing Black Rock City will take the opportunity to seize food from the tiger's mouth.

At that time, this place will become a place surrounded by demons. Whether the Lord of Black Rock can survive in the end can only be left to fate. But one thing is certain, that is, the Lord of Black Rock will never focus on Huang Mingxuan and his wife anymore. Xu Changqing thought of this, so he did not stop the Thousand Tribulation Demon Emperor Seal from absorbing and swallowing the surrounding Tribulation Demon Wind and the Great Free Demon. Although he did not want to directly help the Tusun and his wife, it was still possible to help the indirect helper.

Xu Changqing did not use any flying methods or escape methods, because performing such magic in the demonic tribulation would undoubtedly cause more unnecessary trouble. He still used the ghost and god-like body movements in the way of secular martial arts. He moved forward at an extremely fast speed. Although his travel speed was no longer much slower than ordinary flying spells, the ups and downs caused certain obstacles, which still caused him to detour a long way. It took about half an hour to pass through the resource area surrounded by volcanoes outside Black Rock City and come to the center of Black Rock City.

Few people in the demon world who advocate attack will build city walls on the territory they control, but Black Rock City is an exception. A circle of tall city walls built with local unique black rocks encircled Black Rock City. Countless magic arrays were carved on the city walls and connected to the spiritual veins of Black Rock City. Although the city walls seem to be built perfectly, if you are careful, you can still see that the entire city wall is built on another circle of older city foundations.

Xu Changqing was not interested in the messy magic array on the city wall. The people who arranged the magic array on the city wall obviously had only a slight understanding of the battle. He was completely the most vicious and the most powerful magic array. He arranged it on it. He didn't know what the way of life and restraint was. A large number of mutually restrained magic arrays would not only weaken the effectiveness of the formation, but also cause some extremely unstable destructive forces. Fortunately, the black rock in Black Rock City has the characteristic of absorbing and accommodating various forces, which made these destructive forces absorbed into the black rock before they could be exerted. However, no matter how powerful the black rock is, there is a limit, and this limit is not too far from Xu Changqing's eyes, so the magic array on the entire city wall is like a bomb that will explode at any time in Xu Changqing's eyes. The Black Rock City will sooner or later be destroyed because of this circle of walls.

What interested Xu Changqing was that part of the ancient city foundation. Although this part of the city foundation was also cast from black rock. It was obviously much older than the city wall, and it might even be built during the prehistoric period. The black rocks on many places on it began to transform into another stone. This situation only occurs when the same force is constantly eroded over the years, just like a piece of beautiful jade will undergo different changes after touching it in people's hands all year round. Such erosion is not a good thing for the black rock building the city wall, because the two most important characteristics of black rock, and the absorption force disappear with the change of stone, and it becomes another stone. This stone is far less hard than black rock. Under the squeeze of the heavy city wall, it is pressed into blocks of powder. Xu Changqing even speculated that this part of the city foundation is probably also a part of the city wall at the beginning. It was just compacted and crushed.

Although this city foundation was originally ancient, it did not attract Xu Changqing's attention. It was entirely because Xu Changqing approached the city wall and was about to break the city wall magic array that had already been activated. He was about to enter the Black Rock City, the seal of the Wanjie Demon Emperor who had just eaten his stomach began to shake again. He pointed directly at the Chengcheng Foundation.

Xu Changqing stood at the edge of the magic force of the Black Rock City and directly found a formation trajectory. When he walked into the formation, although the magic circle in the Black Rock City was not very strong in terms of formation power alone, the disorderly arrangement of the magic array made the formation trajectory like a mess. It was still a troublesome to find the way forward of the formation trajectory of his own formation.

It took about a quarter of an hour before Xu Changqing walked to the edge of the city wall, which is the center of the entire city wall defense magic array. Only by walking to the center of the city wall can one feel how strong the destructive aura generated by the mixing of various magic array forces condensed in the city wall is. When the formation does not operate, this destructive aura will only be hidden in the black rock, but when the formation is operated, it will be emitted, which will have a great impact on anyone who breaks into the defensive magic array. The strength of any intruder will weaken at least one level under its influence, and it may even directly attack the soul of the intruder.

Although this destructive aura is very strong, if Xu Changqing's Zhenwu Demon Sword Yuanshen was absorbed, the Great Destructive Sword would inevitably be greatly improved, but the power of the Destructive Aura is too many, so many that it can no longer be separated. If you have the skill to purify this destructive aura, it would be easier to use this skill to increase the power of the Great Destructive Sword with its own strength.

With regret and unwillingness, Xu Changqing felt the power in the city wall again, then ignored it, squatted down, and cut a little black rock in the base of the city that was not dangerous, and slightly used a trace of magic power to explore it.

"Hmm? Strange!" Soon, Xu Changqing frowned and looked at the black rock in his hand that would scatter at any time. The reason why he did this was because his mana could not detect any situation inside the black rock. It seemed that there was an extremely powerful devouring force in the black rock. No matter how much mana he sent in, it would be like a stone sinking into the sea without causing any waves.

Although this is not the first time that Xu Changqing's clone cannot detect objects, the objects in the past were all spiritual objects in heaven and earth. The city foundation in front of him was obviously not equal to the spiritual objects in heaven and earth. Xu Changqing could only think that this black rock, as the city foundation, has become something similar to the spiritual objects in heaven and earth after countless years of refining various forces. However, there is no breath of spiritual energy or other powers on it, and its real power or effect cannot be confirmed.

After hesitating for a moment, Xu Changqing suddenly thought that the stone milk he had taken in the secular world. Although its effectiveness cannot be compared with the spiritual objects in the three realms of Kunlun, it is also a spiritual object of heaven and earth formed after spiritual energy purification and accumulation, which is somewhat similar to the black rock at the base of this city.

Thinking of this, Xu Changqing couldn't help but use his fingernails to pick up a piece of city foundation fragment and put it into his mouth. After entering his mouth, the fragment was immediately disintegrated, forming a clear air to penetrate the soul and merged into it without any obstacles. At this moment, Xu Changqing immediately felt that his body and soul had become particularly sensitive. Any magic power scraped past him, which made him feel like a knife cut. All the scenes in front of him disappeared, leaving only some unruly light. The strongest light contained a destructive aura that was enough to make everything disappear.

All the strange phenomena come quickly and disappear quickly. In just a moment, all the abnormalities disappear, replaced by a stinging pain all over the body, just like countless people stinging the steel needle as thin as hair. Even the spiritual clone like Xu Changqing's Wanjie Demon Emperor's clone could not get rid of this pain, and even the soul was the same.

"What a great medicine stone!" After everything returned to normal, Xu Changqing breathed a sigh of relief.

He did not expect that the black rock in the city would have such a powerful effect. Not only did it work on the clone, but even the Golden Immortal body could feel it. Although the process was extremely short, the effect was extraordinary. For this reason, he once again provoked a little black rock in the city as if he was in his mouth, and was ready to bear the extreme sensitivity to everything outside. But unexpectedly, the black rock in the city still turned into a stream of clear energy and merged into the soul of the sea of ​​consciousness, but there was no effect just now. To be more correct, it was gone.

"Strange!" Xu Changqing frowned, thought for a while, and seemed to have thought of something. Then he divided the Chengji Black Rock in his hand into three, and then sent it to the hands of the other three clones, and let them swallow them. As he expected, the three clones had the effect of swallowing the Chengji Black Rock for the first time, but the second time was completely ineffective. Now the effect of this unique Chengji Black Rock has only once.

"So that's it! No wonder the half-step Demon Lord was able to master a trace of the power of transforming nothingness and use it so skillfully. It turns out that his secrets are all here." After Xu Changqing understood the effect and shortcomings of the black rock in the city, he couldn't help but look at the city wall containing the aura of destruction in front of him. He quickly thought of the Demon Lord who had the power of transforming nothingness who died in Qin Qin's hands before.

The Demon King's power to transform into nothingness comes from the aura of destruction contained in the city wall. This Gu must have continuously controlled a puppet clone to swallow the black rock of the city base, and then used the effect brought by this treasure to touch the most fundamental power of transforming into nothingness through the puppet clone's feelings. Although the method is a bit suspicious, it has to be said that the tenacity of this demon will is rare in the world. If you want to use this moment of spiritual light to capture the power of transforming into nothingness contained in the aura of destruction, it is impossible to do it without tens of thousands of attempts. Similarly, this Gu is really cruel. He actually refined so many puppet clones to do this. I am afraid that in order to hide the secret, none of the puppet clones will survive. Now that he died in Qin Qin's hands, it is also considered a cycle of cause and effect, and he is unhappy in retribution.
Chapter completed!