From the expression of the demon clan's mystery, Mu Tianyi had already determined that this Yu princess was Dugu Yu.

"You don't have to bother!"

With a flash of sword light, this demon mystic suddenly lost his vitality.

The Heavenly Demon Continent is on the other side of the Dragon Island Continent, and it is very close to here.

Going to the Heavenly Demon Continent is different from the Beast Barbarian Continent, let alone other continents, the mysteries of the Heavenly Demon Continent, when they see the mysteries of other continents, they basically kill them directly without asking the reason.

So Mu Tianyi could only sneak in cautiously.

The central city of the Heavenly Demon Continent is a place called Demon Rock City.

After a few days of travel, Mu Tianyi came to Demon Rock City, the city gate.

The city gate is guarded by many demon soldiers.

Mu Tianyi found a hidden place, hidden, and carefully observed the armament around the city gate.

The demons are heavily guarded, and in terms of cultivation, they are stronger than human soldiers, and there is no gap in their garrison at all, so it is not easy to sneak in.

Their defenses were not only around the city gates, but even in mid-air, they were extremely heavily guarded.

If you are not careful, it will attract many demon mysteries.

Mu Tianyi was not sure that he would escape from the pursuit of the all-demon clan.

Just when he wandered around the city gate for three days, Mu Tianyi was about to give up, and the turning point came.

A group of human mystics came from afar, and it was not difficult to see from the costumes of those people that they were the mystics of the Heavenly Witch Clan.

Mu Tianyi's figure disappeared in place, quietly appearing behind the Tianwu Clan.

At the same time, at an extremely fast speed, the last Heavenly Witch Clan's Xuan Shi was killed, because the speed was too fast, no sound came out, so Mu Tianyi easily replaced the Xuan Man.

Then he changed into the costume of the mysterious man and blended into Magic Rock City.

Take off the clothes of the Heavenly Witch Clan's mysticists and put them in the soul ring, if you want to blend into the Demon Palace, I'm afraid you can still use it, so Mu Tianyi didn't destroy the clothes.

Hiding in a hidden place, Mu Tianyi opened the eye of the sky, scanned the entire demon palace, and finally found Dugu Yu's figure in the prison below the palace.

There is only one entrance to the underground prison, and it is heavily guarded.

Even if you enter the entrance, the passage inside is long and narrow, and there are many demon prisoners imprisoned.

Dugu Yu's location is at the innermost part of the prison.

It looks like it's a good package, it's a single room, and it's not locked by the spirit lock.

However, in the prison, there are two Emperor Spirit Realm powerhouses hidden in the shadows.

If you want to enter, you must not only avoid the guards, but also avoid those two Emperor Spirit Realm powerhouses.

Strangely, Mu Tianyi did not find that there was a more powerful force within the Imperial City.

"Could it be that the so-called Heavenly Demon is not in the Imperial City?"

Mu Tian's mind was racing, thinking about how to enter the dungeon silently.

After a few days of observation, Mu Tianyi found that there would be a gap every day, about an hour or so, and at this time, there would only be one of the two Emperor Spirit Realm mysteries guarding here.

It might be a bit of a hassle to deal with two at the same time, but one should be fine.

Having mastered the time for the guards to change guards in the dungeon, Mu Tianyi quietly sneaked over.

As Mu Tianyi continued to get closer to the dungeon, the reaction of the Eternal Heart fragments became stronger and stronger.

"Fragments of the Eternal Heart, hidden in the dungeon?"

Originally, he thought that the fragment was somewhere in the imperial city, but he didn't expect it to be in the dungeon.

I was a little excited in my heart, and my pace quickened.

Judging from the previous observations, these guards were well-trained, and they were all above the True Spirit Realm, and each of them was led by two Emperor Spirit Realm Demon Clansmen.

It can be seen that in this dungeon, all the prisoners who are very important to the demon clan are imprisoned.

In the middle of the night, just after the Emperor Spirit Realm Mystic left, when the expressions of the demons were slightly depressed, a cyan figure quietly came.

Before the guards could react, a sword light flashed, and several guards fell silently in an instant.

The process of entering the dungeon was surprisingly smooth, and soon, I came to the depths of the dungeon.

However, Mu Tianyi did not strike immediately, but hid in the shadows, waiting for the opportunity, waiting for the opportunity to kill with one blow.

At this time, I saw the Emperor Spirit Realm Mystic Person, walking towards the cage where Dugu Yu was imprisoned.

"Princess Yu, why are you so persistent? If there is chaos today, the time has come for our demon clan to rise again. ”

"Don't talk nonsense, I just won't hand over the Heavenly Demon Seal! You have the ability to kill me!" Dugu Yu's voice echoed in the dungeon.

Mu Tianyi smiled secretly, he hadn't seen him for a few years, Dugu Yu didn't seem to have changed much, and his words were still so poisonous.

"Hmph, even if there is no Heavenly Demon Seal, the Heavenly Demon Lord will find a way to open the Golem!

The Emperor Spirit Realm Mystic showed a hideous expression and said viciously.

"Even if I hand over the Heavenly Demon Seal, he doesn't plan to let me live! I'm not interested in participating in your plans. Dugu Yu said coldly.

"You!"

Just when the Emperor Spirit Realm Demon Clan Mystic was gritting his teeth in anger, a cyan figure and its strange speed quickly swept out, and the sword light flashed, piercing straight into the back of the heart of the Emperor Spirit Realm Demon Clan.

"Mu Tianyi, why are you? Why did your hair turn silver?" Dugu Yu saw the visitor, and a flash of excitement flashed in his eyes.

Mu Tianyi just smiled faintly, but did not answer.

"Quick, cut off his head!" but then his expression changed, and he said.

Without hesitation, the sword light swirled, like a streamer flying, gorgeous and colorful.

And the Emperor Spirit Realm Demon Clan's mystic showed a frightened expression, and fell to the ground with a pop.

Mu Tianyi cut the lock of the dungeon door with the Jinyang Sword and released Dugu Yu.

And Dugu Yu was not idle, and released all the demon clans in the cages around him.

It turned out that these were all poisonous valleys, and those demon mysteries disappeared with Dugu Yu.

They have long been integrated into the human race, and they do not want to participate in the struggle between the demons and the humans.

That's why I'm locked up here.

"Let's go! The guards here will soon discover the anomaly, and they won't be able to leave when the time comes!"

"Do you want to leave? Are you really my demon dungeon, is it so easy to enter? From the moment you entered Demon Rock City, you have been exposed, and you don't know it. ”

It turned out to be the Emperor Spirit Realm demon powerhouse who had left before.

And behind him, there were also three Spirit Realm powerhouses.

"You go first! don't worry about me, they won't do anything to me for the time being!" Dugu Yu knew that in the current situation, there was no possibility of escaping.

With their strength, even if they can fight, these people in front of them are by no means the opponents of the Heavenly Demons and others who are waiting outside.

"Princess, let's stop them, you and Mu Tianyi should leave quickly!" Several Demon Clansmen of the Poison Valley stood in front of those strong men, and said with resolute expressions.

"Since that's the case, then I won't leave!" Mu Tianyi smiled faintly and pulled back a few Demon Clans Mystery Masters of the Poison Valley.

At the same time, the figure flashed and swept to the front, and this sudden move shocked several demon powerhouses instantly burst back.

Judging from Mu Tianyi's actions before, they knew that Mu Tianyi's cultivation was unfathomable, so they naturally didn't dare to make rash moves.

However, Mu Tianyi did not continue the pursuit, but only forced several demon clan mystics out of the passage.

Then, the spiritual power of the whole body surged, and the chaotic fire gushed out wildly, sealing the entire passage, leaving only space for the air flow to flow.

Several demon clan mystics didn't expect that Mu Tianyi would make such a move, and they were stunned.

"Hmph, even if we can't get in, what?

"My purpose is to keep you from coming in, and that's enough!"

Mu Tianyi smiled faintly, walked to the end of the dungeon, the cell where Dugu Yu was held, and searched carefully.

"How do you know that I am in the Demon Continent and am still locked up here?" Dugu Yu asked curiously.

"Hey, I also overheard it when I was passing by the Dragon Island mainland. Mu Tianyi didn't look back, still using those heavenly eyes, exploring every corner of the dungeon.

"I see, you're still so stupid! How can anyone break into the Demon Imperial City alone? Brain let the donkey kick?" Dugu Yu didn't have a good breath.

Although the heart is beautiful, the words that come out of the mouth are still so poisonous.

Now that even Mu Tianyi is trapped here, who can save them?

"I said you're a woman, it's really ...... I'm so kind and unrewarded!"

At this time, a middle-aged demon clan mystic man coughed a few times, Dugu Yu smiled, shrugged his shoulders, and said, "Okay! Your brain didn't let the donkey kick!"

"Now that they are guarding outside, we can't get out at all, once the Heavenly Demon finds the Heavenly Demon Seal, at that time, we will have no chance to escape!" said the middle-aged Demon Clan's mystical man.

"Is this Demon Rock City afraid of thunder?" Mu Tianyi suddenly said thoughtlessly.

"Hmm, what do you mean?" the middle-aged demon clan mystic was a little unresponsive.

"I mean, how strong is this Demon Rock City, are you afraid of the thunder of the sky?" Mu Tianyi said again.

"Hahaha! Are you joking! Even if you're afraid, what? Heavenly Thunder is in vain, why did it come to Demon Rock City?" The middle-aged demon laughed and said, originally he thought that Mu Tianyi was a smart person, after all, there were a lot of rumors about Mu Tianyi in various continents.

But now I am a little disappointed, what I said seems to be a fantasy, and it is not realistic at all.

However, that silver hair still attracted the attention of the other demon clansmen, and a flash of shock flashed in their eyes.

Silver hair is not for everyone.

"Do you have a way to attract heavenly thunder?" Dugu Yu had a tacit understanding with Mu Tianyi, and a gleam flashed in his eyes.

"You can try it. Mu Tianyi smiled mysteriously.

Just now, he had already found the ninth Eternal Heart Fragment, but he didn't expect that fragment to be embedded in the ground.

A punch slammed into the ground.

Bang!

With a loud bang, the ground shattered instantly, and the fragment was shaken out and fell into Mu Tianyi's hand, and then turned into a ray of light and submerged into his body.

"Now, you'd better all stay away. ”

With that, Mu Tianyi sat quietly cross-legged and began to merge new fragments.

Presumably, there was an extremely strong Spirit Gathering Array in this Demon Rock City, so much so that after ten thousand years of accumulation, this ninth fragment actually stored shocking spiritual power.

Of course, this is not felt from outside the fragments, and can only be experienced when it is inhaled into the body and fused.

Originally, Mu Tianyi planned to absorb the spiritual power in the fragments, and if it was not enough to advance, he would devour the spiritual flowers and plants stored in the soul ring.

Now it's a matter of saving money, and the power in this fragment alone has brought him to the brink of promotion.

However, now he needs much more spiritual power to advance than before, so in the end, he still devoured a part of the spiritual flowers and plants, and finally gathered enough spiritual power.

Now, everything was ready, and Mu Tian began to concentrate on breaking through the realm.