Just like when they were chasing Yun Yu when the Zhou Tian Star Array was broken before, their bodies were able to completely merge into the Yin Qi energy of the Demon Soul Secret Domain, as if they were fused into the void.

The figures of the two old men disappeared on the spot in an instant, almost without the slightest time interval, and suddenly appeared from behind the two talisman clones.

Such a strange scene, not to mention that Yun Yu had never seen it with his own eyes, even in countless various classics, there had never been a record of such a secret magic.

At this time, Yun Yu felt more and more the strangeness of the cultivators' exercises in the upper realm and the horror of their supernatural powers.

Both sides were in a state of high-speed flight, and no one stayed at all. After the doppelganger talisman was sacrificed, Yun Yu didn't have any good strategy except for speeding up and fleeing.

And that kind of Ruyi Soul Snatching Array that trapped the enemy for several breaths, in front of such a superb Boundary Breaking Realm old man, it was definitely only once.

If it is sacrificed again, there will definitely be no more effect, and the three old men will definitely not stand still and wait for Yun Yu to perform.

It is said that the time is very short, in fact, it has been nearly half a day since the two sides began to chase and escape, although it is only nearly half a day, but at the speed of the two sides, they are all bursting out with all their strength, and they have already escaped from the place where there is a space passage nearly ten million miles away.

Flying with all his might, regardless of the consumption of spiritual power in his body, Yun Yu at this time had already felt that the spiritual power and soul power in his body had been greatly consumed.

In such a half-day period, it was naturally impossible for the three Boundary Breaking Realm Soul Cultivators to have the slightest worry about running out of Yin Yuan Force energy.

The direction that Yun Yu chose to hide in at this time was to go to the most core place of the Demon Soul Secret Domain, and it was also the place where the Yin Spring gushed.

But that place, from the spatial rift that connected the Lost Lands that he entered, was nearly 100 million miles away.

With such a long distance, it was absolutely impossible for him to reach it before the three Boundary Breaking Realm elders behind him caught up.

As the distance between the two sides getting closer and closer, Yun Yu also felt a violent and slightly depressed breath in his heart, and a fierceness continued to rise from his heart, making his always calm and waveless face reveal a terrifying aura.

The distance between the breaths of the two sides was slowly approaching, and Yun Yu had already detected that the breaths of the three old men were approaching at an extremely fast speed, thirty thousand miles, ten thousand miles...... More than 1,000 miles .......

The fierce aura on Yun Yu's body, as the two sides approached, was also condensed and climbed sharply, although he was ready to fight for his life in his heart, but he did not stop there.

The place where we went was a whole mountain range, but there were no tall peaks.

Although there is no Yin energy in this area anymore in the space, let alone the existence of Spiritual Energy.

But in such a place, when fighting, it may also make the three old men's attacks much less powerful, after all, their familiarity with the rules of heaven and earth is far greater than that of Yun Yu.

However, for Yun Yu, this place was not the most suitable place for him to use his secret magic methods or in desperation, sacrifice that strange remnant bowl, and use the Yuan Yi True Water and Poisonous Breath energy in it to defeat the enemy.

The means he relied on the most at this time, in addition to the large number of thunder and fire talismans he had refined and the formation self-detonation, the only way to threaten the lives of the three old men was to use the existence that even he could not control.

But he has always had a sense of a certain name in his heart, the reason why the Demon Soul Secret Domain launched actions such as the Demon Soul Disaster and even the Demon Soul Tide Sacrifice may be guided by a top unfathomable person hidden in the shadows, and these three old men are also very likely to be related to it.

And the ultimate goal of a large number of demon souls stationed in the Lost Lands is also likely to be related to the strange bowl he obtained from the Yuanji Mountain Range and the Yuanyi True Water.

Yun Yu was not sure about this abnormal induction, and in such a situation, he would not risk sacrificing it in his heart.

In addition to this method, he was able to grasp the secret technique of fighting with the three old men at this time, and all of them needed to launch a secret sneak attack method at a very close range.

The most suitable area for close combat should naturally be in a place with tall mountains and stone forests.

At the same time as the body was flying, Yun Yu's soul power detection had already been completely released, enveloping tens of thousands of miles around his body.

Just when the distance between the two sides was less than a thousand miles, Yun Yu's soul power probed and in front of him, a mountain range that grew black and had a tall stone forest pillar finally appeared.

The tall mountains in this whole area are all black lacquer, and countless small peaks and slopes, including boulders, are all pitch black.

This mountain range gave Yun Yu a sense of great familiarity, and when he reacted, he knew that the area he came to was very similar to the Yuanji Mountain Range in the Lost Land, where the Yuanyi True Water was stored.

And in this area, there are many peaks as high as thousands of feet, and there is also a thick gray-black mist shrouded in it, but it does not contain any energy qi, and of course, there is no corrosive power poisonous devouring breath.

Yun Yu didn't hesitate, his body turned down, and he flew directly towards the vast pitch-black mountain range.

Just when Yun Yu's figure had just submerged into the pitch-black mountain range, the three old men of the Boundary Breaking Realm suddenly stopped at the same time, their bodies were covered in dark red mist, and their faces were gloomy, looking at Yun Yu, there was a trace of strangeness in their eyes.

The sensing and the chasing enemy behind him stopped on the periphery of the pitch-black land, and Yun Yu also flashed and stopped on top of a tall mountain peak.

"Junior, the old man saw that your formation attainments were not low, and he wanted to include you in the door so that you could make the best use of it. I never thought you'd be in this area.

Then you resign yourself to your fate, and in a few days, your body will be reduced to a pile of dry bones, and not only your soul will survive. ”

The three old men looked at Yun Yu, their expressions all showing some embarrassment, and they seemed to have a sneering gaze at Yun Yu.

"Well, could it be that this is a forbidden place in the Demon Soul Secret Domain, and that Yin Absolute Mountain Range can't be?"

Seeing the three old men with such expressions, and hearing what they said, Yun Yu's heart suddenly showed the name of a forbidden place.

"Heh, you even know the name of this place, it seems that you must have mastered the forbidden art, and you have already searched the soul of the Demon Soul Monk.

Now that you know where this place is, I think you already feel the feeling of ants and insects devouring essence and blood in your body at this time. ”

Seeing Yun Yu's face suddenly changing color when he heard this, the three old men showed a mocking look on their faces almost at the same time, and some of them even spoke.

The Yin Absolute Mountain Range is the most terrifying forbidden place in the Demon Soul Secret Domain. As the name suggests, "Yin Jue" means that a cultivator who has the attribute of Yin Qi energy in his cultivation will be desperate or forbidden to enter this mountain range.

When the nearly 100 Demon Soul Cultivators captured by Yun Yu in the Lost Land interrogated and searched for souls, the forbidden place where he heard the most information was this Yin Absolute Mountain Range.

Those Demon Soul Cultivators in the Demon King Realm, just mentioning this Yin Peerless Mountain Range, all showed a look of fear and fear.

Yun Yu also did not expect that in order to avoid the pursuit of the three old men, he actually entered the most terrifying forbidden place in the Demon Soul Secret Domain.

It was able to be listed as the first forbidden place by the high-level cultivators of the Demon Soul Secret Domain, and if it weren't for the existence of a major danger among them, it would definitely not have such a reputation.

Even the three old men who broke through the boundary realm stopped without hesitation, not daring to take a step into this area, which further showed that the danger here was definitely not groundless.

But what made Yun Yu a little puzzled at this time was that the feeling of ants and insects devouring essence and blood that the old man said in his words was not very strong at this time.

Although he also sensed a strange invisible feeling wrapped around his body in his body, as if there was a kind of corrosive power and poisonous aura that resembled the existence of the mist of the Extreme Yin Mountain Range, the feeling was different.

This strange aura is only invisibly devouring the soul energy in his body, not the feeling of being devouring the essence and blood in his body like an ant insect devouring the essence and blood as the old man said.

"Hmph, even if Yun dies here, he won't let you wait for the three of you to see him, if you want to capture and kill Yun, it is impossible to think about it in this life, since you don't dare to enter this place, then Yun will enter alone. ”

Although he didn't feel the terrifying feeling of the forbidden land that made the cultivators in the Demon Soul Secret Domain very frightened, Yun Yu knew that this was not a good opportunity to leave the land area, and once he left, what was waiting for him would be even more dangerous.

With all three old men in place, even if he was willing to fight the enemy in close quarters, Yun Yu was not sure that he could really inflict heavy damage on the other party.

Therefore, in just an instant, Yun Yu made up his mind, and as he spoke, his figure had already flown up again, turning into a ray of light, heading towards the depths of the Yin Absolute Mountain Range.

Seeing Yun Yu so decisively retreat into the depths of the Yin Absolute Mountain Range, the three old men were suddenly shocked at the same time.

Although they had the heart to go after them, they thought of the horror of this place, and the three of them did not move their bodies in the end.

Although the cultivation of the three old men had reached the limit of this domain, the fear in their hearts for the pitch-black mountain range in front of them was no less than that of the other Demon Soul cultivators.

Seeing Yun Yu's figure disappear into the pitch-black mountain range, the three old men did not show much disappointment.

Although Yun Yu destroyed the Zhou Tian Xingchen Great Array, and those low-level demon souls were also dispersed a lot, the three old men were not too worried about the matter of this Demon Soul Tide Sacrifice.

It's just that he didn't capture Yun Yu at such a distance in pursuit, which made the three old men feel a lot of unwillingness in their hearts.

Thinking about it, the three old men had already made plans and did not open their mouths to discuss. Two of the figures parted along both sides of the pitch-black mountain range and fled into the distance.

Their meaning was very obvious, using the three powerful tracking aura secret techniques to trap Yun Yu in this Yin Peerless Mountain Range, once he tried to leave this place from any way, he would not be able to escape their pursuit.