"Senior also think it is a formation ban?" Li Muran said with a stir in his heart: "If it is a formation ban, it should be a means of arrangement by the cultivators. Could there be a cultivator practicing here?"

"Yes or not, just look at it!" Huo Yun said.△↗

Li Muran nodded, and he took out two five-element talismans and stuck them to his body. The latter turned into a layer of light five-colored glow, covering his body.

Immediately, under the protection of this layer of rays, Li Muran sneaked into the depths of the yellow sand. After the yellow sand encountered the five-color rays, it immediately avoided the side like flowing water, greatly reducing the resistance Li Muran suffered when diving. After a while, Li Muran penetrated deep into the yellow sand as if he had dived into the seabed.

After diving down more than 200 feet deep, the surrounding yellow sand had turned into cold rocks, and among the rocks, Li Muran still walked smoothly, as if walking on flat ground.

Li Muran walked through the rock for several miles and finally arrived in front of a relatively open underground stone cave. At the entrance of the cave, there was indeed a faint formation light curtain.

Li Muran looked around the cave and found that the cross-section of the stone wall here was smooth, obviously it was made by artificially digging with sharp tools.

"There are indeed signs of monks' activities!" Li Muran looked curious, and he said, "Who is it that actually set up a cave here and practices here!"

Huo Yun said: "The only monks in the Mahayana stage who can enter this prehistoric valley are the Mahayana cultivators. As for why that person wanted to practice here, it is puzzling. Could it be that he is avoiding disaster?"

"If the owner of this cave has really practiced in the prehistoric valley for many years, he should have a good understanding of this place. Maybe he can guide us where to find birds with the blood of the phoenix." Li Muran thought, then coughed lightly and said loudly to the forbidden light curtain: "Who is the fellow Taoist who practices here? I accidentally discovered the fellow Taoist cave and accidentally broke into this place. Please don't be surprised. If it is convenient, please give me some advice in the next one and two!"

While Li Muran was speaking, he secretly moved his true energy and wanted to penetrate the sound into the prohibited light curtain. Unexpectedly, the fluctuations in the vital energy contained in these words only aroused circles of wavy water patterns on the surface of the restricted light curtain and failed to enter the light curtain.

Li Muran frowned. The restriction was much more clever than he expected.

Li Muran stretched out his finger and bounced it, and a ball of true energy gathered at his fingertips, compressed into a bead of vital energy the size of a soybean, and shot out and hit the ban light curtain.

With a light "puff", a gray-white flame suddenly appeared on the seemingly inconspicuous light curtain, swallowing the vital energy bead directly.

"Huh!" Li Muran exclaimed. Although the gray-white flame disappeared quickly, he had already discovered that the flame was extraordinary in that moment. Otherwise, he could not have swallowed and dissolved the vital energy beads condensed from him so easily.

"Senior, look, this flame is so weird!" Li Muran said.

Huo Yun flew out of Li Muran's sleeve in response, and Li Muran then bounced out with another finger. This time he shot out a larger vital bead.

However, as soon as the Yuanqi bead approached the forbidden light curtain, a gray flame immediately emerged from the latter and swallowed the Yuanqi bead.

Huo Yun glanced at the gray and white flame, and his face changed drastically, and he couldn't help but take a few steps back.

"Nether Ghost Fire!" Huo Yun exclaimed: "How could this top-level ghost fire that can only be refined by high-level ghost cultivator, appear here?"

"Ghost Cultivation?" Li Muran was stunned. Only then did he notice that the cave was particularly cold. He originally thought it was because of the darkness and humidity deep underground. Now it seems that it is indeed extremely yin energy here.

"Is this fire very powerful?" Li Muran asked, "Looking at the expression of his senior, I seem to be quite afraid of this fire!"

Huo Yun nodded slightly: "The Netherworld Ghost Fire is my nemesis! My former master, he has a mortal enemy. The master has fought with his mortal enemy for several games, and it is difficult to decide the winner. I vaguely remember that the mortal enemy is a ghost cultivator, and he is also very good at this Netherworld Ghost Fire! So I have dealt with this Netherworld Ghost Fire many times, and it is impossible to admit my mistake!"

"This fire is really strong?" Li Muran said skeptically: "This fire does not seem to have too strong vitality fluctuations on the surface. Although he tried it twice but failed, he did not use his true strength. I wonder if he could forcibly break this ban?"

Huo Yun shook his head repeatedly and hurriedly advised: "I advise you not to do anything randomly! This ghost fire in the underworld is so powerful that it can compete with the pure Yang fairy fire of the immortal family! Although I don't know what kind of ghost cultivator here is, he can cultivate this kind of ghost fire and is willing to use it to set up restrictions. He must be an extraordinary person, so don't provoke it. Otherwise, I may not be able to help you!"

Although Li Muran was curious, seeing Huo Yun's expression was so serious, he nodded: "Okay, since senior said that, I will leave here immediately."

The two were about to leave, when suddenly a cold laugh came from the depths of the cave: "It's too late to leave now!"

At the same time, the originally inconspicuous forbidden light curtain suddenly appeared a large area of ​​raging and white flames. The flame ignited all the yin energy around it, and suddenly enveloped Li Muran and the fire clouds.

"It turns out that the master here has discovered you and me!" Huo Yun frowned: "The next one is probably a hard battle, and it will never be easier to deal with than the saber-toothed beast!"

After saying that, Huo Yun immediately slapped his palms and sacrificed a large amount of innocent energy, turning it into a ball of raging flames, spreading all around.

At this time, a faint phantom floated from the depths of the cave, unable to see his figure clearly, and it was difficult to distinguish his aura. It was undoubtedly the ghost cultivator. After the ghost cultivator appeared, ghost fire souls in the form of evil ghosts immediately surged out from the gray and white flames around him, and rushed into Li Muran and the others in a ferocious manner from all directions.

Fire Cloud slapped his palms, and the sea of ​​fire he cast suddenly shone on the surface of the sea of ​​fire, forming a new layer of fire.

This layer of fire is very thin, but it is particularly pure and almost transparent, which is exactly the so-called perfect color of fire.

"Haoyang Immortal Fire!" Li Muran's heart moved. This was exactly the time when Huo Yun got a wisp of immortal fire from Qiongqi's body. Huo Yun said that this fire was a ban in Qiongqi's body, but in fact, it was just a wisp of immortal fire that Qiongqi devoured in his early years.

The ghost fire souls transformed by the Netherworld Ghost Fire easily swallowed other flames, but after encountering this layer of Haoyang Immortal Fire, they were a little afraid and dared not get too close.

Suddenly, Huoyun stretched out his finger and bounced it, and a wisp of Haoyang Immortal turned into a rocket and came out. One of the ghost fire souls was heard. In a scream of "sniff", the ghost fire soul immediately turned into a wisp of blue smoke and was burned completely!

However, when the rocket turned into Haoyang Immortal Fire and returned to the sea of ​​fire, it was obviously damaged by its vitality.

It seems that the Haoyang Immortal Fire can restrain each other with the Nether Ghost Fire. However, the Haoyang Immortal Fire cultivated by Huoyun is obviously not as strong as the other party's Nether Ghost Fire.

"It's true that there are two tricks!" The ghost cultivator sneered: "You can actually cultivate such pure spiritual fire, which is comparable to the Nether Ghost Fire of My Secret!"

"However, this kind of magical power is probably not the natal magical power you refined yourself. Just a wisp of it refined by external objects, how can it be compared with my natal magical power!"

The ghost cultivator laughed a few times. With the laughter, ghost shadows continued to appear on his body, which was already very demonic. The heavy ghost shadows were wrapped in gray and white ghost fires, and kept pounceing towards Li Muran and the others.

The ghost shadow just kept spitting out strands of ghost fire from the underworld, surrounding it tightly, and constantly consuming the power of the Haoyang Immortal Fire around the fire cloud.

As for other flames, the fire cloud was enough to sacrifice a large area, but it was vulnerable to the Netherworld Ghost Fire. Even a powerful hundred-foot fire dragon was torn to pieces by several gray and white ghosts and swallowed up one after another.

Li Muran frowned. The momentum would not be good if this continues.

He has a lot of magical powers, but to deal with the ghost fire in the underworld, it seems that only the Heavenly Thunder Talisman is more effective.

After all, the power of heaven and thunder is transformed by the laws of heaven and earth, and almost has a certain restraining effect on all magical powers, and is no exception to ghost fire. Although Li Muran does not know the technique of heaven and thunder, Xiao Lei has controlled a lot. In addition to Li Muran's masterful talisman making technique, he has refined many heaven and thunder talismans over the years.

These thunder talismans are Li Muran's finale, and they are easily unwilling to use them, but when they encounter danger, they have to come out.

Li Muran waved his sleeves, and more than a dozen thunders and lightning flashed, and suddenly a deafening thunder sounded around him, followed by more than a dozen golden thunders pounced around like a dragon.

A golden thunder penetrated through several ghosts and suddenly scattered the ghosts, and the gray flames were also dispersed a lot.

Under the turbulence of the power of golden thunder, a dense circle of ghost fire, which was originally densely penetrated a large hole. Li Muran took advantage of the opportunity to rush out of the ghost fire like a flash of rays of light, and then waved his sleeves and a green light flashed, turning into countless vines, rolling towards the ghost cultivator's phantom from up, down, left and right.

The ghost cultivator seemed to be a little careless. He did not expect that this early Mahayana monk who had never taken action and had such a sharp magical power when he took action. He directly penetrated the ghost fire in the underworld and attacked him. In that moment, the ghost cultivator probably had no time to react and was bound by the vines and countless black hairs derived from around him.

Li Muran was delighted and was about to urge the Xuantian Ancient Vine to completely bind the ghost cultivator, but the ghost cultivator's phantom actually dispersed with a "bang" and easily escaped from the shackles of the vines.
Chapter completed!