Seeing this, Yuan Canghai pinched his hands again and again, and laid a heavy light mask enchantment three zhang away from Yunlong and him, and finally laid a small phantom array around the enchantment to block the infestation of the demon beasts here on Yunlong.

The powerful spiritual sense quickly spread outward, searching layer by layer in a carpet manner, not letting go of a single flower or tree. In this way, the entire savage oasis was probed, and no anomalies were found.

Seeing that Yunlong opened his eyes, his brows were furrowed, full of doubts, Yuan Canghai knew that he had no gain, so he reminded him: "If there is no ground, what about the underground?"

When Yunlong heard this, his eyes lit up instantly, and he slowly closed his eyes and extended his spiritual sense to the ground.

Under normal circumstances, a practitioner's spiritual sense investigation has a certain scope, and he cannot do what he wants. This is closely related to the level of cultivation. Generally speaking, cultivators who have cultivated to the realm of the five qi rushing to the heavens have a spiritual sense investigation range of about one mile within a radius of about one mile; those who have cultivated at the top of the three flowers have increased the scope of their spiritual sense investigation to a radius of one to five miles; and those who have scattered immortals can spread their spiritual sense to a radius of five to nine miles; the earth immortals are already known as half-immortals, and their spiritual consciousness has been transformed, and they can investigate any space within a radius of twenty miles; and the supreme heavenly immortals are a mystery to the entire cultivation world, so naturally it is unknown.

Yun Long's true cultivation was close to the realm of the middle stage of the Scattered Immortals, and because of his special body, he could detect the space within a radius of about eight miles with all his strength.

At this moment, Yun Long had continuously spread his powerful spiritual sense into the ground, until he reached the limit of his exploration, but he could not find the abnormality.

"Give it to me!"

Unwilling, Yunlong let out a low cry and urged the Buddha bone relics in his body with all his might.

With the help of the Buddha bone relics, the exploration range that was originally only eight miles within a radius suddenly broke through the limit and reached the limit of the realm of scattered immortals - a nine-mile radius.

"Huh! What is that?" Nine miles down vertically from the ground, Yun Long vaguely found a huge cave, which seemed to have a lot of things on display, faintly emitting vague and strange fluctuations, but it may be due to the slight difference in distance, the scene in the cave was blurred in Yun Long's eyes!

Calming his mind, the cloud dragon gradually entered the ethereal realm, and under the amplification of the eye of the mind, he took in all the originally vague scenes in the cave.

"Huh, he actually used the mystery that could easily see through the origin of the formation?"

At the moment when Yunlong entered the ethereal realm, Yuan Canghai keenly discovered the mysterious fluctuation that flashed away, his eyes shining, and he muttered softly.

"I hope you'll find out!"

Under the shroud of the cloud dragon's spiritual sense, about ten miles deep in the ground below him, a towering cave stood magically. On the east side of the cave, a winding path that slopes upwards leads upwards to the east, and I don't know where it leads.

In the center of the cave more than ten zhang high, an ancient well protruding slightly from the ground is revealed from the ground. The wellhead is boxy, and the length of one zhang is even. In the depths of the wellhead, Yun Long faintly felt a trace of evil aura that made his heart palpitate. This breath actually caused the Buddha bone relics in the body to move!

In all directions of the ancient well, there is a statue of a dragon of different shapes hovering, they either open their teeth and dance their claws, or look up to the sky and roar, or fly dragons spread their wings, but they are only about one zhang in size, and they are scattered around with a certain mystery, as if forming an unknown powerful formation!

On the body of the dragon statue, he seemed to feel a similar aura to the dragon god grandfather in his family's mysterious ancestral hall, familiar and cordial, thinking that it should be connected in the same vein! Although the dragon statue did not move at all, it was as silent as a dead thing. But Yunlong felt that there was a powerful dragon breath hidden in each of these dragon statues, but it was as if they were sleeping, and sooner or later they would come back to life! He faintly felt the invisible summoning of the dragon statues in his heart.

Three feet and seven feet above the wellhead, a glittering gossip diagram floats in the air, spinning without wind, and from time to time bursts out a black and white intertwined supernatural light, shrouded in the wellhead. At this time, at the exit of the ancient well, the black and white glare that implies the righteousness of the supreme Taoist will manifest and flow slowly. At that time, there will always be bursts of angry and unwilling roars faintly from the depths of the ancient well, and the violent and restless breath seems to tear the shackles of the wellhead and rush to the sky.

And in the rest of the cave, and even the winding path that spread upwards on the east side, Yun Long saw countless formation stripes with his mind eye.

"Whew!"

The extreme detection made the cloud dragon unable to support it for too long, and when he wanted to continue to observe other places, he could no longer maintain the state of the ethereal realm.

Retracting his spiritual sense, Yunlong slowly opened his eyes, and his face was gloomy.

"How?"

Seeing Yunlong get up slowly, Yuan Canghai immediately asked.

"Alas, there is indeed a cave in the depths of the earth!I think our speculation is most likely true!" Thinking of the scene he had just seen, Yunlong couldn't help but sigh lightly.

Next, he will tell Yuan Canghai the truth about everything he has found underground.

After listening, Yuan Canghai looked solemn and said in a deep voice: "Listening to your description, the ancient well in the underground cave should be a passage for the demon world to invade the world, but it is sealed by the unfathomable power. The power of the seal is probably twofold, one of which is the Taoist Yin and Yang Bagua Demon Diagram. Second, it should be the forbidden array of the Shenlong clan to deter the world - the Eight Dragons Lock Sky Array. As for the other spaces in the cave, if my expectations are correct, they should all be laid with various unpredictable and powerful formations, and there may even be overlapping formations. ”

"Oh, what is the Eight Dragons Lock Empty Array?" Hearing this, Yun Long's heart moved, and he asked.

It was just because of Yunlong's curiosity, Yuan Canghai didn't know that Yunlong was carrying part of the Divine Dragon Decision-Qi Cultivation Divine Dragon Decision, so he patiently explained: " It is based on eight powerful dragons, and the body of the dragon is derived into a stone carving, and the dragon soul is integrated into it. It's just that these eight divine dragons are destined to pay a huge price, and they sacrifice their dragon bodies without hesitation, and they can only shock one side with the state of divine souls, and lock the heavens and the earth!

At this moment, a sense of sadness and arrogance suddenly rose in the depths of Yunlong's heart. The mind was slight, and the cloud dragon was proud of their dedication to the stability of the world. He also has a half-divine dragon and has the body of a demi-divine dragon, and he also feels a trace of indescribable sadness for this!

"From my observations, the seal has already gone through thousands of years of vicissitudes, and it is already decadent. If we let that seal dissipate, I'm afraid the world will have to face the disaster ahead of time!Now, what should we do?" Knowing this earth-shattering secret, Yun Long's heart was heavy, and he asked a little anxiously.

"I'm afraid it's not as simple as you think! The winding path you just mentioned leading to the top of the east side is where the Lone Wolf Fort in Mobei is located. This is definitely not a coincidence, to say that all this has nothing to do with Mobei Lone Wolf Castle, I'm afraid no one will believe it. After all, people's hearts are unpredictable!" After a moment of silence, Yuan Canghai sighed quietly.

"Why don't we go down and investigate first, and as for the night exploration of the ancient castle, we will postpone it later!" What do you think?" Knowing the priority of the matter, Yunlong suggested on the spot.

"It's just that it's so deep underground, how can we enter it without moving?" said Yuan Canghai after a moment's thought.

With a confident face, Yunlong crossed his hands and overlapped them, palms downward, slowly panning to both sides. I saw that an invisible force forcibly split the ground in front of me like a cloud. As the earth cracked, a bottomless dark hole appeared in front of the two of them out of thin air.

"Let's go!"

Before the words fell, the cloud dragon jumped into the narrow hole that was bottomless, and floated all the way down.

"Good boy, there's really a set!"

Seeing this, Yuan Canghai on the side was stunned for a moment, then exclaimed, and then gently jumped into the black hole and went towards the depths of the earth.

The pitch-black underground passage does not extend straight down, but has nine twists and eighteen bends, twists and turns.

Following step by step, seeing that Yunlong seemed to know this place for a long time, Yuan Canghai couldn't help but be surprised: "I can't imagine that such a secret passage has been discovered by you, but can it go straight to that mysterious cave?"

The figure flickered, easily crossed a strange stone obstacle that stretched out, and Yun Longtou said softly without replying: "This is what I accidentally found when I was just exploring, it should be the only secret passage that can lead to the outside world except for the path that extends on the east side of the cave." It's just that there is a powerful prohibition at the top of the cave, and we can only stop there for the time being. However, it was already very close to the seal. ”

Gradually, two quarters of an hour passed quietly, and the two of them came to the end of the secret passage, which was already above the top of the mysterious cave.

Through the strange light that swirled under their feet in front of them, the two of them scanned everything in the cave so closely.

"This place is indeed as we suspected, it is a spatial passage connecting the demon world to the human world. The double seal here, even if it is not artificially destroyed, under the ruthless erosion of the years, the power of the seal is about to disappear, but I am afraid that it will not last for a hundred years at most. After Yuan Canghai used the Tai Chi Bagua Heavenly Eye, he slowly told his discovery.

"Isn't there a way to repair and strengthen the seal here?" his eyes changed, and Yun Long asked in a low voice.

Hearing the unwillingness and hope in Yunlong's tone, Yuan Canghai hesitated: "I'm afraid this is very difficult! Not to mention that it is difficult for us to pass through the layers of formations to get close to the seal in a short period of time, even if we can get close to it by luck, if we don't know the mystery and recklessly repair it, it may backfire, but accelerate the dissipation of the seal." ”

Hearing this, Yunlong looked helpless, and looked blankly at the eight divine dragon statues below, his eyes flashing with magical light, and he didn't know what he was thinking.

At their feet, a curtain of light covered the entire outer edge of the cave, flickering faintly. Above it, an invisible, colorless air stream flowed at high speed, emitting a destructive force that devoured heaven and earth, tearing anything that came near it into nothingness in an instant.

"Alas, it seems that we want to use this place as a breakthrough to enter the cave, it is difficult! here, it is a defensive barrier arranged by the great supernatural powers, which will block everything that wants to enter the cave, so as to protect the safe operation of the seal!"

After several attempts to make a move, Yuan Canghai looked at the prohibition below them with solemn eyes, and had no choice but to give up, feeling emotion for a while.

Yun Long, who had woken up from his contemplation, looked down calmly at the moment, only to see him slowly stretching out his right hand, and his body was filled with a shocking momentum.

"Roar!"

With the sound of a faintly audible dragon roar, a crystal bright golden light shot out from the palm of Yun Long's right hand, instantly turning into a vivid three-foot golden dragon, under the control of Yun Long, roaring and galloping, swooping down.

When the golden light dragon approached the forbidden light curtain, the surface of the light curtain suddenly distorted, and with lightning speed, it was about to tear and devour the golden light dragon emitted by the cloud dragon with a bang.

"Failed?"

Seeing this scene in front of him, Yuan Canghai sighed slightly. Although the power of the divine dragon exerted by Yunlong aroused his curiosity and recognition, it was no match for the powerful forbidden light curtain in front of him after all.

"Let's go, it's time for us to see the famous Lone Wolf Fort in Mobei. Seeing this, Yunlong was not disappointed, but snorted coldly on his face.

Turn around and leave, without dragging your feet at all. As he turned around, a strange smile rose at the corner of his mouth, but it disappeared in a flash, and no one noticed.

Although Yunlong's actions were a little strange, he couldn't allow Yuan Canghai to think about it more. Putting aside the doubts in his heart, the figure quickly followed the soaring cloud dragon in a flash.

At the moment when Yuan Canghai dodged away, inside the golden light dragon that had just been devoured and torn, an even smaller mini golden light dragon suddenly roared out, breaking through the prohibitions in one fell swoop, and finally fell into the stone dragon on the east side of the eight dragon-shaped statues below.

At that time, a vast and boundless divine light shone from the original simple and dull stone dragon, submerging the entire cave under the brilliant golden rays.

After a long time, the surging brilliance of the stone dragon in the east gradually converged, and everything returned to its previous calm. It seems that nothing has changed here, but an unknown transformation is quietly taking place!