With the attention of the sea monster in the late stage of the third order, a violent momentum swept across the surroundings.

But after watching it for a while, there was a trace of doubt in the eyes of this sea monster. Whether it was in the mind or the power of the monster, there was no abnormality in the surroundings.

"Roar!"

The sea monster let out a roar, and after hearing it, the surrounding sea monsters acted quickly, and their power and mind were intertwined in all directions.

Thirty miles away, Xu Wucheng and the others saw the reaction of those sea monsters, and when they heard the roars one after another, their expressions could not help but become dignified.

Fortunately, there is still a considerable distance from here to there. If they rush within ten miles at this moment, no matter how extraordinary the breathing ring is, they will definitely be discovered.

Chen Fei remained motionless, letting the sea monsters howl, the sky eyes between the eyebrows remained stable.

Except that the black barrier fluctuated for the first time, there was no abnormality in the barrier at other times.

So after searching for a while, the semonsters who found no abnormalities gradually subsided.

Xu Wucheng and the others looked at Chen Fei, wondering how Chen Fei was progressing and whether he had broken through that barrier.

If even Chen Fei can't do anything, then the rest of them will also be helpless.

At that time, they can only return to Haiyu City by the same route and report the situation here.

Although we haven't really found out what's behind the black barrier, but judging from the siren's cautious attitude, the things inside are probably not trivial.

At that time, the level of this task will rise, so it has little to do with them.

After all, I want to be surrounded by so many sea monsters, and there are also late-stage third-order sea monsters, lurking in the past.

It is simply impossible to do it in the general acuity state, no matter how good at lurking, the result will be the same.

Perhaps only at the peak of the Aperture Realm can one hope to achieve this.

But no one can guarantee that the lineup they see now is the full strength of these sea monsters arranged here. What if there are also third-order peak sea monsters who are good at lurking?

Is there a third-order peak siren? There really are!

Xu Wucheng and the others only saw a lot of late third-order sea monsters, but under Chen Fei's eyes, a third-order peak sea monster was actually lurking behind the black barrier.

This layer of black barrier consists of two layers, and the third-order peak sea monster is hiding behind the first layer of barrier.

Chen Fei continued to look into the second layer of barrier. Because of the experience just now, he penetrated into the second layer of barrier at this moment without causing the slightest fluctuation.

"Boom!"

A crackling sound suddenly came from afar, and all the Kraken's attention was drawn to that direction.

Xu Wucheng frowned slightly, and in the rippling breath in the distance, there was a fluctuation of the martial artist's energy.

Faced with a lineup like Kraken, they will still sneak in. There is a high probability that it will be another team that has taken over the task.

Xu Wucheng was not worried about the safety of the members of that team, but worried about whether those people would be dragged down by himself and others if they were discovered.

It's a cold idea, but it's also extremely realistic. When encountering danger, the first subconscious reaction of a person will be to protect himself.

Unless you are in danger, it is your closest relatives.

Chen Fei naturally also heard the voice, but he had no time to look at it. His mind in the sea of consciousness trembled violently, and he kept using secret methods to bypass the barrier.

This kind of double-layer barrier is too difficult to spy on, that is, Chen Fei's Tianyan smelts various pupil techniques and secrets, and possesses various characteristics, which makes this possible.

Switching to other single pupil techniques, whether it is the Phoenix pupil of Fengwu Pavilion or the Nether Eye of Nether Gate, the result is the same.

Finally, after Chen Fei consumed 70% of his mind, under the eyes of the sky, Chen Fei finally saw the scene behind the barrier.

Outside square and inside circle, behind the barrier is an extremely peculiar formation. With Chen Fei's knowledge of the formation, he couldn't recognize the function of this formation for a while.

In addition to this formation, there is also a round bead rising and falling in the most central position.

Every time the ball floats, it will cause the vitality of the surrounding world to vibrate violently, and at the same time, its own size will also be reduced by a circle.

The reduction was very small, but it was extremely obvious in Chen Fei's vision. The missing parts are all integrated into the formation.

Chen Fei swiped his right hand, pinched a cloud of mist, and showed what he saw in front of Xu Wucheng and the others.

Seeing Chen Fei's actions, Xu Wucheng and the others moved slightly. Did they see something behind the barrier?

So fast!

In their view, with so many sea monsters surrounding them, the black barrier must be extremely powerful, and it is hard to imagine how difficult it is to break through it.

Following Chen Fei's right hand pinching, a cloud with an outer circle and an inner circle appeared in front of several people.

Xu Wucheng frowned slightly, Chen Fei couldn't recognize what kind of formation it was, Xu Wucheng might be inferior to Chen Fei in terms of formation technique, so naturally he couldn't see what the formation was used for.

Several people turned their heads to look at Guo Huasheng. Among them, only Guo Huasheng had the strongest formation attainment.

Guo Huasheng stared at the cloud and mist in front of him, his eyes slowly narrowed, and various formations flashed through his mind, but Guo Huasheng denied them one by one.

"Can you see the formation pattern and the fine marks on the beads?" Guo Huasheng asked in a low voice. If he wanted to finally determine the effect of the formation, he could only judge from these details.

"I'll try." In Chen Fei's sea of consciousness, the roar of the dragon elephant sounded.

This is Chen Fei forcibly oppressing his mind, and the Dragon Elephant Suppressing God automatically operates to protect his mind and prevent it from collapsing.

As the roar of the dragon and elephant sounded, the details under the vision of the sky eyes became clearer.

The formation patterns on the formation are already untraceable, and the vitality of heaven and earth vibrates on it. It is too difficult to break through these barriers.

But they all came here, only seeing a formation, the task is equivalent to not completing, because you can't even tell what the formation is for. Going back to report like this is equivalent to not providing any results.

Chen Fei made sword fingers with his right hand, and engraved the patterns he saw on the cloud and mist in front of him.

With both form and spirit, Chen Fei almost completely reproduced what he saw on the cloud.

As Chen Fei continued to engrave the pattern, several brilliance flashed in Guo Huasheng's eyes, and a look of shock appeared in his eyes, but Guo Huasheng was still not completely sure whether it was the formation he guessed.

"Okay, look at that round bead." Guo Huasheng said anxiously.

"Okay." Chen Fei nodded, moved his gaze upwards, and looked at Yuanzhu.

Compared to the pattern on the array, the factors affecting the observation on the ball are much less, Chen Fei can easily see the fine marks on the ball.

Chen Fei continued to engrave with his right hand, and the fine marks on the bead were displayed on the bead one by one. But after a while, the bead formed by the clouds and mist was already covered with dense stripes.

Compared to the pattern of the outer circle and the inner circle, the number of fine marks on this bead is not less at all, and there are even more.

"Phaseless Boundary Formation, this is the Phaseless Boundary Formation!" Guo Huasheng said in surprise when he saw the fine marks on the bead.

"Phaseless boundary array? The teleportation array?"

When Tong Linyun heard what Guo Huasheng said, he always felt that he had heard it somewhere, and then he realized that this is not the long-lost teleportation array? It is rumored that people or objects can be sent thousands of miles away.

If there is a good boundary stone to suppress the magic circle, thousands of miles away is only an easy distance, or even farther is possible.

But this magic circle has long been lost, and now this kind of formation has been discovered on the Siren's side.

Compared with humans, sea monsters have extremely rough mental control, which is determined by their racial characteristics, just like sea monsters are inherently stronger.

Thus, for things like formations, ordinary sea monsters simply cannot form formations, let alone formations of the level of phaseless boundary formations. Back when this formation was not lost in the Thousand Feathers League, very few people could control it.

In the end, it was precisely because it was too difficult to grasp, and coincided with some other reasons, that the Phaseless Boundary Formation disappeared in the Thousand Feathers League, leaving only a little classic description and incomplete formation patterns.

"Is this sea monster planning to go to the rear of Haiyu City?" Qin Haishan frowned.

"There are probably other purposes, we will report what we see." Xu Wucheng whispered, looking at Chen Fei.

Chen Fei nodded, took a Xiaoshen Pill, controlled the Juyun Stone, and slowly floated backward.

The battle fluctuations that came from afar just now have completely disappeared at this moment. I don't know if the person ran away or was wiped out by the sea monster.

However, most of the third-order late-stage semonsters near the black barrier did not set off to go there, obviously worried that it was a strategy of smacking east and west. In their minds, human fighters are extremely cunning.

Compared to killing a few humans, keeping things here is obviously more important.

Chen Fei led Xu Wucheng and the others, and they evacuated very patiently, even stopping halfway to recover their mental strength.

The more it is like this, the more urgent it is.

As there were no late-stage third-order sea monsters around, the expressions of Xu Wucheng and the others obviously relaxed a lot. At this position, even if they are discovered, the hope of escaping in batches is very high.

Unlike the previous position, as long as it is discovered, there is almost no possibility of escape.

Two hours later, the five of Chen Fei left the Phaseless Boundary Formation hundreds of miles away, and the sea monsters here are already scarce, so even if they showed their figures, they might not have to worry about the sea monsters chasing and killing them.

After all, Xu Wucheng's aura in the late stage of the Aperture Realm, when the number of ordinary third-order sea monsters is insufficient, they dare not go forward at all.

Xu Wucheng had a smile on his face, as did Tong Linyun and the others.

Although the process of this task was thrilling, there were no mistakes in the end. Compared to the other team that received the mission, they were considered extremely lucky.

And report back what you see, at least half of the mission rewards can be won.

After all, in terms of the difficulty of this task, it is impossible to complete it without the participation of the peak of the Heqiao Realm.

Eighty miles away from Haiyu City, there is almost no trace of the sea monster here, which can be regarded as a buffer zone between Haiyu City and the sea monster.

Chen Fei and the others have already removed the Juyun Stone, and are preparing to rush back to Haiyu City at full speed.

Suddenly, Chen Fei's eyes narrowed slightly, Xu Wucheng also stopped vigilantly, Tong Linyun and the others were a little puzzled, but they were still vigilant, and kept looking around.