About a quarter of an hour or so, the compass that was hanging in front of Chu Mu with a faint white fluorescence slowly fell silent as the compass pointer stopped rotating.

Chu Mu seemed to be aware of it, and after a jade slip was touched out, and all the information he observed was recorded in it, he looked at a bottomless submarine ravine not far away.

In the past, he might still be a little unfamiliar with this kind of self-contained space, but after refining the spirit beast bag and perceiving the mystery of heaven and earth, he obviously had a fairly clear understanding of this kind of self-contained space.

Just like this ruin in front of you, even the prestigious secret realm of the immortal cultivation world, and the so-called small world.

In fact, there is no essential difference between them and the Qiankun bag he refined, they are all small worlds that exist by relying on this great world of cultivating immortals.

The only difference between the two is the quality and quantity of space.

Just like the East Lake Secret Realm back then, it can be regarded as a super-large Qiankun bag, and its essence is still the same as the Qiankun bag, which is dependent on this immortal cultivation realm and exists, not a self-contained world in the true sense.

And the essence of this relic cave is naturally the same.

It is the product of the ancient monks' great power to create, relying on the great world of cultivating immortals, forming its own space, and realizing the true meaning of isolation from the world.

As far as he knew, this kind of self-contained and isolated cave mansion was also quite popular in ancient times.

In many ancient records, there is even the reputation of "Xianfu".

The relics that have left countless legends in the immortal cultivation world often refer to this kind of immortal mansion.

Of course, the most important thing is that the only ones that can be passed down over a long period of time are often this kind of isolated immortal mansions.

If it is an ordinary cave mansion, even if the formation ban can support for a long time, but the formation ban is visible outside, and the traces are obvious, unless it is a deserted place, otherwise, under the evolution of the years, it will inevitably become a monk's fate long ago, and it is impossible to inherit it for too long.

And this kind of self-contained immortal mansion, the secret realm, since it relies on this immortal cultivation realm to exist, there will inevitably be a connection with visible traces.

And this connection often has distinctive characteristics.

For example, the connection between the secret realm of East Lake and the world of cultivating immortals lies in the jade slip that comes from the secret realm, in other words, the token opens the secret realm and enters and exits the secret realm.

For example, his Qiankun bag needs to be guided by his divine soul breath in order to open the Qiankun bag and store the living and dead.

The connection in it can actually be regarded as a portal, a portal that will inevitably exist as long as it is a space that relies on the realm of cultivating immortals.

It's just that this kind of portal is often set by the controller.

It's like locking the door, which is a very popular truth.

This kind of space is the most obvious connection with the immortal cultivation world, and the most obvious traces lie in this.

Even if this relic inheritance is hidden, it appears once every sixty years, and its portal must be the same.

The difference is only whether he can detect this portal or not, whether it can be opened.

Chu Mu looked at the compass, and the pointer fixed the direction due south, which was also the direction of the bottomless ravine he was looking at.

According to the investigation of this compass, there is a spatial fluctuation in the ravine.

It's just that this spatial fluctuation is extremely subtle and extremely unstable.

It's as if the direction of the portal is changing from moment to moment, and it is not fixed.

"Is it the formation covering, or is it the change of space?"

Chu Mu thought for a while, if it was the former, then there must be traces to follow, and maybe there was no need to wait for a while, he could find a way to break the formation and open the door.

If it is the latter, it is undoubtedly beyond his ability.

With the help of this compass to monitor the space, and even to disturb the solidification space, he can barely achieve it.

But this kind of use of space is obviously still superficial, more akin to knowing what it is and not knowing why.

After all, the level of space, even if it is the power of the primordial infant, is only the first to be involved.

He was able to refine this space-type compass magic weapon, and it was more about tricks, using the mystery of the formation to produce the utility of the spatial level.

His own understanding of space is only limited to some cognition of self-contained heaven and earth when refining the Qiankun bag, and other than that, his cognition is extremely limited.

Chu Mu took one step at a time, and in the flickering of his body, he had already stepped out of the sky-breaking flying boat and walked on the bottom of the sea, but in just a few breaths, he was already hanging above the deep-sea ravine.

Although it has reached the bottom of the sea in the traditional sense, this ravine is still bottomless.

Chu Mu thought for a moment, and between the flow of mana, the figure hanging on it also slowly descended towards the depths of the ravine.

The ravine was not wide, only a few zhang wide, but in addition to the bottomless, its length stretched from his field of vision to the endless darkness of the seabed, with no end in sight.

The rocks on both sides of the ravine are bare, unknown coral shellfish are piled up, and strange rocks are lined up, and under the darkness, it seems to be inexplicably depressing.

According to common sense, the bottom of the sea has always been a place where monsters and beasts emerge in an endless stream, but this ravine is indescribably silent, and he does not see any abnormal movement, he has descended dozens of miles in the ravine, and he has not even seen any living beings in the real sense.

Chu Mu's expression was tense, and the mana around his body flowed, and a faint sharp edge surrounded his body, as if he was already undisguised vigilance.

The aura at the bottom of the sea is strong, and it is impossible to survive without demon beasts.

In this ravine, the aura is even stronger, and somewhere in the ravine, there must be a spiritual vein.

In such a place with a strong aura, but there are no demon beasts, that is the biggest anomaly.

Abnormality inevitably means unknown.

Unknown, that means unpredictable danger!

"Location, changed again?"

After descending a hundred miles, Chu Mu's body suddenly stopped, he held the compass, and his tense expression was already dignified.

Judging from what he observed on the flying boat, the place where that faint spatial fluctuation appeared should be about the height he is at now.

But when he came to this place, this vague spatial fluctuation changed its direction again.

Not to mention the direction of the descent, it seems that from this ravine, embedded in the rock wall on the side, and it is also deep into it for dozens of miles.

"Is it a random natural change, or is it a change that comes from being watched?"

Chu Mu's eyes moved slightly, and the vigilance in his heart seemed to be a little thicker.

If it's the former, it's easy to say.

If it is the latter, it undoubtedly means that the ruins have a master, and this trip to the ruins is afraid that it will be difficult to be good.

Chu Mu looked around, then raised his hand and threw out a knife light, the knife light submerged into the rock wall, and passed through countless loads of sea pressure. The stone wall that has long been transformed into a spiritual material is as fragile as tofu.

In just an instant, under the agitation of the sword light, a simple underwater cave took shape.

Chu Mu stepped out of the cave and sat cross-legged in the cave, his eyes slightly closed, and the compass hovering in front of him, once again monitoring the fluctuation of the obscure space.

This time, the monitoring lasted for nearly ten days.

The result obtained also made Chu Mu's hanging heart relax a little.

The change in the orientation of spatial fluctuations really seems to be just random natural changes, not manipulation.

At one point, the direction of that spatial fluctuation was even outside his cave.

It's just that even if that spatial fluctuation is close at hand, no matter how much he does, it will be difficult to get a glimpse of it.

The law of this change in direction is even more difficult to detect, with a radius of hundreds of miles, uncertain direction, and uncertain change time, and there is no law to be found at all.

The only gain was probably to let him know the reason why the aura here was so strong, but there were no demon beasts.

And this reason is even simpler, the coverage is so large, such random spatial fluctuations, even if it is obscure, it will inevitably have a certain impact on the spatial stability of this area.

As for demon beasts, their instinctive induction is often extremely keen, and their induction of the living environment is even more acute.

The change in the living environment will naturally arouse the vigilance of the demon beasts.

After all, no living creature can survive in an unsafe place.

"In that case, you'll have to wait...... Yijiazi? ”

Chu Mu pursed his lips, as if he was a little hesitant and a little relieved.

Fortunately, before he came, he was mentally prepared to wait for Yijiazi.

Yijiazi retreat, as far as the Jindan realm is concerned, can be regarded as a normal thing.

His sleeves were rolled up, as usual, he did not leave any traces to peep into, and with one step, he was transformed into a crimson sword light rising from the bottom of the sea along the ravine.

Seeing Chu Mu appear, the three Zhao Shuang, who had been waiting on the flying boat for a long time, seemed to be obviously stable.

Such a dangerous outer sea, if there is no Chu Mu to support, just the three of them build a small foundation, the only result is probably ...... There is no place to die!

"This deep sea, Chu is very curious, with your cultivation in the foundation building realm, how did you come here?"

Entering the flying boat, Chu Mu's first sentence was Xie Yu, who bowed down and stood in the opposite direction with deep meaning.

Xie Yu's expression changed slightly, but he seemed to have expected it, and hurriedly bowed his hand: "Forgive me, seniors, the juniors are following the seniors of our clan." ”

Chu Mu's expression did not fluctuate, and he looked at Xie Yu and the three of them in front of him with interest, waiting for a satisfactory answer.

"The younger generation followed the seniors of the clan when they were still in the Qi Cultivation Realm......

Xie Yu explained methodically.

A very clear answer, but it can't confirm the truth or falsehood, is also placed in front of Chu Mu.

According to what Xie Yu said, when he was practicing the Qi Realm, he came with a primordial ancestor of the Xie family, which was a trial in the Xie family, and many disciples of the same clan also participated in it at that time......

"So, you've been inside this ruin?"

Chu Mu didn't care if this was true or not, and his words were straight to the point.

Xie Yu handed over another jade slip and said respectfully:

"This is the internal information of the ruins recorded by the juniors, and I also ask the seniors to check one or two."

(End of chapter)