The light gradually became dazzling from faint, and after a while, the dazzling light became dazzling, and in the end, the entire formation emitted a light that people could not look at directly, at this time, the power of the leylines of the entire Youming Realm was promoted to gather here, on the ground above the underground demon city, many people saw a strange scene, a series of tangible gases quickly galloped towards the direction where the Youming Continent was located, these gases did not stay at all, and the gas was gathering more and more, and in the end, all converged in the place where the underground demon city was located, and above the deep pit, a huge vortex was formed, like a tornado。

This is still what people can see with the naked eye, underground, where people can't see with their eyes, the gas in the leylines seems to have been summoned, and it goes straight to the traction array of the underground demon city dungeon.

Li Ao and the others stood outside the formation, the clothes on their bodies were hunting, and the invisible gas blew their robes, some of them were floating from the air, and some of them, they could feel, came out of the ground.

As soon as Chu Chen's magic method stopped, all the leyline qi suddenly couldn't help but be stunned, but they did not disperse, but rushed towards the traction array at an unabated speed, not long after, on top of the traction array, a huge qi circle was formed, as time passed, more and more of the leyline qi gathered in the qi circle, and in the end, this qi circle was divided into seven circles, and the color of each circle began to gradually change, and it didn't take long for the seven qi circles to become black, white, yellow, purple, orange, blue, Green seven colors, at this time, the ley line qi vortex above the passage leading to the underground demon city disappeared, although the earth qi in the earth vein did not rush to the traction array as crazy just now, but the speed is not slow to converge, however, after a while, it will become very slow, because, the seven colors of gas on the traction array have reached saturation, and before being attacked, the earth vein qi will no longer appear turbulent; Chu Chen walked down from the traction array, and the people around him, including Li Ao, were all staring closely at the seven-colored circle on the traction array at this time, which was something they had never heard of or seen, and for a while, they were really shocked。

"Big brother, does this traction array have any other effect besides providing energy to the seal?" After a long while, Li Ao gradually woke up from the shock, and then couldn't help but ask Chu Chen.

"The monks under the second step are cultivating here faster than anywhere outside. Chu Chen said: "Here, it will become the cultivation holy place of the first core disciples of the major forces in the Dark Ming Realm. ”

"Is there such a thing?" Everyone didn't believe it, they didn't expect that this traction array still had such an effect, if this was really the case, then the first step cultivator of the Netherworld Realm was really happy, it could save them a lot of cultivation time, and after they were promoted to the second step in the future, they would have enough time to hit the bottleneck.

"Of course, but you can't enjoy such treatment. Chu Chen smiled.

"Li Ao, my Tianchen Sect has set up a rudder here, in addition, this passage needs to be blocked with a wall, and besides, if you are not the core disciple of my Tianchen Sect, no one is allowed to come down here, and the core disciples of other forces can only cultivate on it. Chu Chen said to Li Ao, this place, but it is related to the fate of the entire Youming Realm, if someone with other hearts comes here and breaks his seal, it is very likely that the Demon Realm will open this passage again, so this place, outsiders cannot be allowed to enter, only the core disciples of his Tianchen Sect can come in, lest something happen that he did not expect. Li Ao carefully wrote down Chu Chen's explanation, and he also knew the importance of this place, so he couldn't and couldn't be sloppy and careless.

"Let's go, let's go back first, it's time to get ready to go to the Twilight Realm. Chu Chen said again.

There are no more people from the Demon Realm in the Underground Demon City, so there is no need for Chu Chen and them to continue to stay here, now that the war is over, the people from the Demon Realm who invaded the Nether Realm have been killed, even if they are not killed, it is estimated that they will not dare to appear for a while, as for the task of finding the traces of the people of the Demon Realm, Chu Chen doesn't want to worry about it, now, he just wants to return to his parents and his ladies as soon as possible, it is time to accompany them.

After he got out of the underground demon city, he said a few words to Qian Buregret and let them play by themselves, and then a great void shift disappeared, and after a few void moves, Chu Chen found a teleportation array, and then directly teleported back to the Tianchen Sect.

At this time, in the Tianchen Sect, only some minor monks were in the sect, and the others, the disciples who had cultivated above the foundation building period all went out to join the army, and now they have not returned, however, he didn't pay much attention to it, and when he came out of the teleportation array, he went straight to the courtyard where his parents lived, but what Chu Chen thought of was that there was no one in the courtyard, and when his divine consciousness was released, he didn't find his parents, Qin Yanran, and them. "Where did they go?" Chu Chen frowned slightly, walked out of the courtyard, and then found a disciple and asked his parents and grandfather where they had gone, and why didn't they see anyone?

This disciple didn't know, only that after going to the Hengduan Mountain Range, he never came back. "Then they went with the army to find the demon clan?" Chu Chen patted his forehead, how could he forget about this, but it doesn't matter, now in this dark realm, there should be no demon clan, even if there is a demon clan, their parents are together, they will be fine, not to mention that Yan Ran still has Fu Xiqin with him, even if he encounters a demon lord-level existence, with Fu Xiqin, the demon lord can't deal with them for a while.

Chu Chen simply returned to his room and went to sleep well, after all, he didn't know which army his parents were following to search for the demons, Li Ao had sent dozens of hundreds of armies to search for the demons who had slipped through the net.

Chu Chen slept in his room until he woke up naturally, when he woke up, it was black outside, and his divine consciousness was released, only to know that it was already late at night, and the entire Tianchen Sect was quiet, and the disciples who went out had not come back, and he didn't know where they had searched where, Chu Chen was about to take back his divine consciousness, when suddenly, he saw several Changhong in the sky galloping towards the Tianchen Sect, and the divine consciousness spread, only to see that Qian did not regret that they came back, and at this time there was no sleep, Chu Chen got up and walked out of the room.

Chu Chen came to the square, looking at the dozens and hundreds of Changhongs that were getting closer and closer, and it didn't take long for Changhong to come to the top of Chu Chen's head, and then, these Changhongs fell on Chu Chen's side one after another.

"Brother Chu, it's really an honor, I didn't expect you to wait for us here. Qian Buregret smiled and said.

"What about the others, just a few of you are back?" Chu Chen smiled and asked.

"I've already gone to other continents, and it will take a while to come back. Qian said without regrets.

In the crowd, Chu Chen didn't see Qing Xuan, Qing Shu, Qing Chang, Zi Yao, and Hu Rong. After Chu Chen chatted with everyone for a while, he asked the disciple to prepare some tables and chairs to be placed in the square, in addition, he also asked the disciple to prepare wine and food, since he was back, he would have a good drink with everyone, chat, and by the way, summarize the experience of this war with the demons.

This chat, that is, until dawn, drank a lot of wine, everyone was a little drunk, look at the sky, Chu Chen and everyone drank another glass, and then let everyone go to rest.

After everyone went back, Chu Chen also returned to his room, he was also a little drunk, however, he did not go to sleep, but hovered on the bed and began to think, he now has to think about why he will not be infected by the demon qi, and he can also devour the demon qi for his own use, and transform it into his own cultivation power, all of this is related to the heavenly demon stone on his body, after thinking for a while, Chu Chen took out the heavenly demon stone, he can absorb the power of the heavenly demon stone, but he didn't expect that he could easily devour the demon qi of the demon race, and it had no effect on him at all。

"What kind of secret does the magic stone have in this day?" Chu Chen put the Heavenly Demon Stone in his hand, he frowned slightly, with the age that he has lived for tens of thousands of years, he can't figure it out at all, the real use of this Heavenly Demon Stone will never be as simple as the legend, among them, there must be a situation that he doesn't know, his mind moved, Haotian Tower came out, and in a blink of an eye, a cloud of ghost light flew out from Haotian Tower, this ghost light is the remnant soul of the Seven Nights Demon Lord, in order to prevent it from dissipating so quickly, in the Haotian Tower, Chu Chen let the remnant soul of the Seven Nights Demon Lord get a lot of nourishment, and now when it comes out, the ghost light flashes slightly, and it becomes a human form。

"It's... This...... It's the Heavenly Demon Stone!!!!" As soon as the Seven Nights Demon Lord saw the Heavenly Demon Stone in Chu Chen's hand, he couldn't help but be suddenly startled, and asked Chu Chen in surprise, it's just that he is now a remnant soul, and Chu Chen can't hear what he says, but although Chu Chen can't hear it, he feels it, and communicates with his divine sense: "You don't need to know how the deity got it, now the deity asks you, what is the use of this Heavenly Demon Stone in your demon clan?"

"The Heavenly Demon Stone is an indispensable thing for our royal family to cultivate the Heavenly Demon Technique, and only with the Heavenly Demon Stone can we cultivate the Heavenly Demon Technique. The Seven Nights Demon Lord told Chu Chen that he didn't hide Chu Chen's intentions in the slightest. In his opinion, it was impossible for Chu Chen to cultivate the Heavenly Demon Technique, after all, he was not a Demon Clan, and it didn't hurt to tell him, the Heavenly Demon Technique, but the highest magic technique of their Demon Clan!

"Heavenly Demon Technique?" Chu Chen smiled, this was really a bit the same as what he had guessed, although he didn't dare to think too much about it, but it was not strange to hear this news from the mouth of the Seven Nights Demon Lord, after all, the Heavenly Demon Stone was not an ordinary magic stone.

"Do you know the mantra of the Heavenly Demon Technique?" Chu Chen asked the Seven Nights Demon Monarch, and the Seven Nights Demon Lord told Chu Chen that of course he knew that the Heavenly Demon Recipe had been known to each of their royal families since childhood. "Then can you tell the deity?" Chu Chen said again.

"Tell you?do you want to cultivate?" The Seven Nights Demon Lord showed a hint of sarcasm, this human race couldn't help but take himself too seriously, and even wanted to cultivate their demon clan's supreme martial arts, suddenly, the Seven Nights Demon Lord had an idea in his heart, he wanted to tell Chu Chen the Heavenly Demon Technique, let him cultivate, maybe, just because he cultivated their Demon Clan's Heavenly Demon Technique, he would go mad and die?

"You can try. Chu Chen said, he really wanted to try this supreme exercise of their demon race, after all, the heavenly demon had fought with the supreme power of the human race, in history, but there were several times that the human race was killed miserably, such an exercise, how could he not want to try it, although he cultivated to the realm of immortal venerable in his previous life, but he could not find the supreme exercise of the demon clan to comprehend, now that he has the opportunity, he can miss it, although he said that he wanted to cultivate the Seven Nights Demon Lord, but before he was completely sure, he would not be stupid to cultivate, the Seven Nights Demon Lord was willing to tell him the heart formula of the Heavenly Demon Formula, Ken was not at ease。

The Seven Nights Demon Lord really told Chu Chen the Heavenly Demon Formula, and he didn't tell the slightest mistake, it was the real cultivation method of the Heavenly Demon Technique, after Chu Chen got the Heavenly Demon Formula, he put the Seven Nights Demon Lord into the Haotian Tower again, and then, he began to seriously study the Heavenly Demon Recipe given by the Seven Nights Demon Lord, sure enough, this is an extremely complicated and obscure exercise, every word contains a lot of information, this is the exercise created by the first generation of the Demon Emperor of the Demon Clan, which is the culmination of his lifelong cultivation, and it is the most powerful exercise in the entire Demon World, it can be said that in the Demon World, there is no exercise that can be compared with this Heavenly Demon Technique。

Although this Heavenly Demon Recipe is obscure, with Chu Chen's ability, he can still quickly understand these mental formulas, after all, Chu Chen had been to the Demon Realm in his previous life, and he had been there for a long time, so he could quickly understand the meaning of the words in the Heavenly Demon Recipe as a foreigner, but if he wanted to study deeply, it would take a lot of time.

Holding the Heavenly Demon Technique, a few days later, Chu Chen finally understood the first paragraph, if he could cultivate the first paragraph, it should be the cultivation of the monk's condensation period, however, Chu Chen did not go to cultivate, even if he was an immortal in his previous life, he might also go to cultivate the exercises of the demon clan, although it is said that in the end, all the methods are the same, but when they do not reach that realm, they will only make themselves suffer if they try indiscriminately.

"In the future, if you have the opportunity, you can cultivate another clone and use it to cultivate this heavenly magic technique, so that it will not affect the deity. Chu Chen thought in his heart, only by cultivating with a clone could he be foolproof, after all, he could control the clone by himself.

Chu Chen continued to study the Heavenly Demon Technique, this exercise he couldn't cultivate now, but it was still okay to know more, in this way, he could also have a better understanding of the Demon Clan.