"Seniors also think it's a formation ban?" Li Muran said with a move in his heart: "If it's really a formation ban, it should be a means arranged by immortal cultivators, is there a monk practicing here?"

"Yes or no, just see!" Huoyun said.

Li Muran nodded, he took out two five-element talismans and pasted them on his body, and the latter turned into a faint layer of five-colored glow, enveloping his body.

Immediately, under the protection of this layer of glow, Li Muran dived into the depths of the yellow sand. After the yellow sand encountered the five-colored glow, it immediately avoided it like flowing water, greatly reducing the resistance suffered by Li Muran when he dived. After a while, Li Muran went deep under the yellow sand as if he had dived to the bottom of the sea.

After diving down to a depth of more than 200 zhang, the surrounding yellow sand has turned into cold rocks, and among the rocks, Li Muran still walks smoothly, as if walking on the ground.

Li Muran walked a distance of several miles in the rocks, and finally came to an underground stone cave that was quite open, and at the entrance of this stone cave, there was indeed a faint formation light curtain.

Li Muran looked around the stone cave and found that the stone wall here had a smooth section, which was obviously excavated by man with sharp weapons.

"There are indeed signs of monks' activities!" Li Muran's face showed curiosity, and he said, "What kind of person is it that actually set up a cave here and cultivates here!"

Huoyun said: "The only people who can break into this desolate valley are the monks of the Mahayana period. As for why the man was cultivating here, it's puzzling, could it be that he was avoiding trouble?"

"If the owner of this cave has really been cultivating in the Flood Barren Valley for many years, he should know more about this place, and maybe he can guide me where to find birds with the blood of the phoenix. Li Muran's heart moved, then he coughed lightly, and said aloud to the forbidden light curtain: "Dare to ask who is the Taoist friend who is practicing here? If it's convenient, please ask Daoyou to point out in the next two!"

When Li Muran spoke, he secretly lucked the true yuan, and wanted to penetrate the sound into the forbidden light curtain, but who knew that the vitality fluctuations contained in these few words only stirred up a circle of wavy water ripples on the surface of the forbidden light curtain, and failed to enter the light curtain.

Li Muran frowned, this prohibition was much more clever than he expected.

Li Muran stretched out his fingers and flicked them, and a ball of true yuan gathered at the end of his fingers, compressed into a soybean-sized bead of vitality, **** out, and hit the forbidden light curtain.

With a soft sound of "poof", a layer of gray flames suddenly appeared on the seemingly inconspicuous light curtain, directly devouring the vitality bead.

"Huh!" Li Muran exclaimed, although the gray-white flame disappeared quickly, but at that moment, he had already discovered that this flame was extraordinary, otherwise he would not be able to swallow and dissolve the Yuan Qi beads he had condensed so lightly.

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

The fire cloud flew out of Li Muran's sleeve in response, and Li Muran immediately popped out another finger, and this time he shot out a larger Yuan Qi bead.

However, as soon as this Vitality Bead approached the forbidden light curtain, the latter immediately erupted into a gray-white flame and devoured the Vitality Bead.

Huoyun glanced at the gray flame, and his face suddenly changed greatly, and he involuntarily took a few steps back.

"Netherworld Ghost Fire!" Huo Yun exclaimed, "How could this top-level Hellfire that can only be refined by high-level ghost cultivation appear here?"

"Ghost cultivator?" Li Muran was stunned for a moment, and then he noticed that the vicinity of this stone cave was extremely cold, he originally thought that it was because of the darkness and dampness deep underground, but now it seems that this place is indeed extremely yin.

"Is this fire very powerful?" Li Muran asked: "Looking at the looks of the seniors, it seems that they are quite afraid of this fire!"

Huoyun nodded slightly: "Netherworld Ghost Fire is the old man's nemesis! The old man's former master, he has a mortal enemy, and the master has fought several battles with his mortal enemy, and it is difficult to distinguish the winner from the loser. The old man vaguely remembered that the mortal enemy was a ghost cultivator, and he was also extremely good at this Netherworld Ghost Fire! So the old man had dealt with this Netherworld Ghost Fire many times, and it was impossible for him to admit his mistake!"

"Is this fire really strong?" Li Muran said suspiciously: "On the surface, this fire doesn't seem to have too strong vitality fluctuations. Although Zai Xia tried twice without success, he didn't show his real strength, I wonder if Zai Xia can forcibly break this prohibition?"

Huoyun shook his head again and again, and hurriedly persuaded: "The old man advises you not to mess around! This Netherworld Ghost Fire has cultivated to the depths of the essence, and its power is enough to compete with the Immortal Family's Pure Yang Immortal Fire! Although I don't know what kind of cultivation the ghost cultivator here has, but he can cultivate this kind of ghost fire, and he is willing to use it to arrange prohibitions, it must be very unusual, don't provoke it." Otherwise, the old man may not be able to help you!"

Although Li Muran was curious, seeing that Huoyun's expression was so solemn, he nodded: "Okay, since the senior said so, I'll 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 burst out of a large area of raging gray-white flames, which ignited all the surrounding yin qi, and enveloped Li Muran and the fire cloud all around at once.

"It turns out that the master here has already discovered you and me!" Huo Yun frowned: "I'm afraid it will be a tough battle next, and it will never be easier to deal with than that saber-toothed beast!"

With that, Huoyun immediately slapped his palms and sacrificed a large amount of Pure True Yuan, turning it into a raging flame that spread all around.

At this time, a faint phantom shadow floated from the depths of the stone cave, and it was difficult to see its figure clearly, and it was difficult to distinguish its breath, it was undoubtedly a ghost cultivator. After the ghost cultivator appeared, ghost fire souls in the form of evil ghosts immediately poured out from the gray and white flames around him, and they pounced on Li and Muran from all directions.

Huoyun slapped his palms, and the surface of the sea of fire he cast suddenly shone with a layer of dazzling light, forming a new layer of fire on top of the sea of fire.

This layer of fire is very thin, but it is extraordinarily pure, almost transparent, which is the so-called pure blue color of the fire.

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

The ghost fire souls transformed by the ghost fire devoured the other flames lightly, but after encountering this layer of Haoyang immortal fire, they were a little afraid and didn't dare to get too close.

Suddenly, Huoyun stretched out his fingers, and a wisp of Haoyang Immortal Fire turned into a rocket **** and came out, hitting one of the ghost fire souls, only to hear a miserable scream of "Wow", the ghost fire soul immediately turned into a wisp of green smoke and was burned clean!

However, when that rocket returned into Haoyang Immortal Fire and returned to the sea of fire, it was obviously already greatly damaged.

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

"Sure enough, there are two hits!" The ghost cultivator sneered: "It is actually possible to cultivate such a pure spiritual fire, and it can be compared to the ghost fire of this seat!"

"However, I'm afraid this kind of supernatural power is not the natal supernatural power that you refined yourself, it's just a wisp of refining it from external objects, how can it be compared with the natal supernatural power of this seat!"

Ghost Xiu laughed a few times, and in the laughter, ghost shadows continued to emerge on his body, which was already very demonic, and this heavy ghost shadow, wrapped in a cloud of gray ghost fire, kept rushing towards Li Muran and the others.

This ghost shadow just kept spitting out wisps of netherworld ghost fire, surrounding this place to death, and constantly consuming the power of the Haoyang Immortal Fire around the fire cloud.

As for the other flames, the fire cloud was enough to sacrifice a large area, but it was vulnerable to the Netherworld Fire. Even a fierce hundred-zhang fire dragon was directly torn apart by several gray and white ghosts, and was devoured one after another.

Li Muran frowned, the momentum is not good if it goes on like this.

He does have a lot of magical powers, but to deal with this Netherworld Ghost Fire, it seems that only the Heavenly Thunder Fu is more effective.

After all, the power of heavenly thunder is transformed by the laws of heaven and earth, and almost all spells have a certain restraining effect, and it is no exception for ghost fire. Although Li Muran himself does not know the art of Heavenly Thunder, Xiao Lei has controlled a lot, coupled with Li Muran's clever talisman making technique, he has refined a lot of Heavenly Thunder Talismans over the years.

These days, the thunder talisman is Li Muran's finale method, and he refuses to use it, but when he encounters danger at this time, he has to use it.

With a wave of Li Muran's robe, more than a dozen thunderbolts flashed, and a deafening thunderclap suddenly sounded around him, followed by more than a dozen golden thunderbolts, which rushed around like a swimming dragon.

A golden thunderbolt pierced through several ghost shadows, and at once these ghost shadows were scattered, and those gray flames were also dispersed a lot.

Under the agitation of the power of the golden thunder, the originally dense circle of ghostly fire was pierced through a big hole, Li Muran took the opportunity to take advantage of the flashing of light, rushing out of the encirclement of this ghostly fire, and then with a wave of his robe, a flash of blue light turned into countless vines, and rolled towards the ghost cultivator from all over the place.

The ghost cultivator seemed to be a little careless, and he didn't expect that this early Mahayana monk with a black cloak who had never done anything would have such a powerful supernatural power as soon as he made a move, directly penetrating the Netherworld Ghost Fire and attacking him. At that moment, the ghost cultivator probably didn't have time to react, and was bound by the vines and the countless green silk clumps derived from it.

Li Muran was overjoyed in his heart, and was about to urge the Xuantian Ancient Vine to completely restrain this ghost cultivator, but the ghost cultivator phantom actually collapsed with a "bang", and escaped from the shackles of the vine lightly.

Li Muran frowned, the Xuantian Ancient Vine could restrain the vast majority of Mahayana cultivators, but it had little effect on ghost cultivators without a physical body!