"Okay, take me quickly, if it's true, Young Master Ben will never break his word. Niu Er was very excited, and followed the rat demon down the mountain with the spider all the way east.

About five hundred miles later, beside a small mound, in a place hidden by vines, there was a hidden hole that would not be discovered until one looked closely.

"This is my home, young master, please come with me. The rat demon brought it in front, and Niu Er and Spider stepped into the cave one after the other.

The cave does not look big on the outside, but there is something special on the inside, and as soon as you enter, you will find that four or five passages more than one zhang high are spreading around, and the depth is unfathomable, and you don't know where it leads.

Fortunately, the rat demon is an acquaintance, and after coming in, he took Niu Er straight to a spacious walk on the left, turning left and right all the way, and after being dizzy, it took about an hour to walk to a huge cave with a height of more than 20 zhang. There are many small holes in the stone walls on both sides, which are thought to be the residence of members of the rat demon family.

In the cave, the spirit grass of various years was piled up, there were about a thousand plants, and next to it were more than 300 spirit stones with dim spiritual light piled together, and there were some miscellaneous items, thrown everywhere. It seems that these are all the belongings of this rat demon.

"Young Master, look, the spiritual fire is over there. ”

Following the guidance of the rat demon, there is a small portal in the corner of the cave, about a zhang, the light cyan stone gate does not look very long, and someone is specially blocking here.

Pushing open the stone door, I saw a hole ten zhang square, a dark red flame floating in the air, without aura and no support, it burned so quietly, from the distant and unpredictable ancient times, to the present.

Niu Er's eyes were scorching, his essence flickered, staring closely at this flame with a flat posture, the red flame was silent and picturesque, as if engraved in the void, and it took a long time to beat, like a sleeping elf, calm and peaceful.

This is not the same as the information I got, and after looking at it for a long time, there was no fluctuation of aura around the flames, as if it was a transcendent existence independent of the world.

Normal spiritual fires generally grow in blessed lands with rich spiritual energy, refining heaven and earth spiritual objects, increasing strength, and even some shuttle under the thousands of lands, devouring spiritual veins one by one, in order to survive.

Suddenly, his chest trembled, and from the close-fitting storage bag, an earthy yellow leather scroll flew out, with mountains and rivers on it, simply outlining the mountainous terrain around this Wushan Mountain.

Isn't this the treasure map that was confiscated? Niu Er was shocked in his heart, he never thought that at this moment, it would fly out on its own and move closer to the flames, I am afraid it was not a simple map.

The leather scroll trembled slightly, emitting a faint earth-colored light, which echoed and rose and fell with the dark red flame, and slowly approached until it entered the flames, burning in the surprised eyes of everyone, and turning into pieces of fly ash.

"No, there's something in the flames?"

Niu Er leaned closer, and he could clearly see that in the dark red flames, a blood-colored pill floated up and down, exuding a faint familiar aroma, and he could feel full of strength when he smelled it.

Suddenly, Niu Er remembered, this smell is the smell of blood marrow mine, could it be that this pill is refined from the blood qi in the ore? Each piece of ore contains only a trace of blood gas, so how many ores do you need to refine such a blood pill, a thousand catties, ten thousand catties, maybe even a million catties?

Must get it, Niu Er was excited, not only because of the preciousness of the blood pill, but also because Niu Er clearly felt that the blood pill and this rare spiritual fire had an inexplicable relationship and were inseparable.

Stretched out his hand and swung out a stream of true qi, slowly wrapping it towards the spiritual fire and blood pill, without any accidents, which made Niu Er a little surprised, but with all his strength, he couldn't take the blood pill out of the flames.

Gritting his teeth fiercely, two things have to be swallowed into the body to refine anyway, Niu Er opened his mouth, and swallowed the entire spiritual fire into his mouth under the surprised gaze of the rat demon and the spider.

As soon as he entered the dantian, the spiritual fire suddenly soared, and the raging red flames rolled out from the inside out, and there was a red glow in the mouth and nose, and there were colorful essences burning in the eyes. In a moment, Niu Er's hair and clothes all turned into smoke.

"Young Master-" The rat demon screamed in fright, and rushed up to extinguish the flames, but I don't know whether it was distressed that the elixir had not arrived, or whether it was terrified of Niu Er's life, but he was held down by the spider on the side with one hand, and his four calves kicked wildly, and it was difficult to move.

"Don't move, the young master will be fine. Spider's pretty face was cold, her eyes stared, staring at Niu Er, who was surrounded by flames, motionless.

At this moment, Niu Er also has a suffering, and he doesn't know where the spiritual fire is sacred, as soon as it touches the blood, it turns into a hideous flame, instantly sweeping the whole body, and the red light between the five internal organs flows, like ice meets fire, and melts rapidly, until it emits a colorful halo and then slows down slightly.

The jade-colored bones of the limbs and hundreds of bones that were originally as solid as gold and iron were also cracked and then shattered, and the hidden bits of golden bone marrow were burned and exercised in the flames, fused into a ball, and the majestic momentum of the original anti-heaven was even more vast and majestic, as if the immortal emperor in the palm of his hand, looking at the Three Realms, sweeping the nine heavens, and there was nothing to do.

The blood in the skin was bubbling like magma, and a faint color rose, protecting the muscles and veins from being damaged, and many muscles mixed with broken bones were all burned into black ashes, erupting outward from the pores.

Just when Niu Er closed his eyes and waited for death, the blood pill in the flame emitted wisps of red aura, burrowing into the internal organs like a spirit snake, entering the bone marrow, wandering all the acupuncture points throughout the body, circulating in the seven orifices, repairing every damaged place.

You can clearly feel that the heart is gradually strengthening, and every time it beats, it is like a heavenly drum roaring, and the blood is like a monstrous wave, surging in the veins and veins, washing away the black ashes. The bones grow in patches, layered on top of each other like fish scales, and are extremely thick. Muscles are also like sprouting grass, growing rapidly and quickly spreading throughout the body.

Half an hour later, the fire was extinguished, and Niu Er opened his eyes, and the two flames slowly receded in the pupils, making the spiders and rat demons on the side breathe a sigh of relief.

When he got up, he shook up, and the pitch-black dead skin on his body fell off piece by piece, revealing the fresh skin inside.

Reaching out and clenching his fist, Niu Er could clearly feel the huge power brewing inside, and every punch could shatter the void, and at the same time, the dark red spiritual fire wrapped the blood pill, staying in the heart, burning and beating with the heart.

The five fingers opened, the mind moved slightly, and a red flame appeared in the palm of the palm, dancing in the air with the command of Niu Er, like a naughty elf.

Niu Er nodded secretly, the spiritual fire of heaven and earth is really extraordinary, full of spirituality, changing at will, it is best to use it for alchemy, if it is strong, it is not impossible to kill strong enemies.

Suddenly, there was a trance in the bottom of his heart, and the faint spiritual fire transmitted a vague message to Niu Er, and unconsciously walked to the edge of the cave, and pressed one palm on the stone wall.

There was a bang in my mind, as if the thunder was shaking, and it was like the eulogy of ten thousand people, and I saw in the haze countless ancient relics bowing to myself, chanting, a tall figure, with his back to the common people, standing against the sky.

I can't see what that person looks like, but Niu Er can be sure that he is a peerless master, and that kind of arrogant and self-respecting posture is not something that ordinary people can have, even if it is a demon immortal, it can't be compared.

After sobering up, Niu Er found himself standing in a piece of rubble, outside the bluestone door, the spider and the rat demon looked at him dumbfounded, and they were uncomfortable.

"What's wrong?, what are you looking at?" Niu Er asked angrily.

Spider's face suddenly turned red, turned around, and said in a low voice, "Young Master, you...... You're not wearing clothes. ”

Niu Er found that he had no hair on his body, and he was standing in the stone cave naked, still looking self-intoxicated.

Hurriedly took out a change of clothes and put them on his body haphazardly before settling down. Unexpectedly, the rat demon said another word.

"Young Master, that cave flew into your body just now. ”

Niu Er was startled, his mind swept over his body, and sure enough, he found that there was an extra fist-sized object in the dantian, and if he looked closely, it was a snow-white skull, emitting a brilliant light, floating in the cyan clouds above the golden pill.

Trembling all over, a chill appeared in Niu Er's heart, this is not a good sign, did he provoke some great deposit?

Hurriedly asked the spider to make it clear, it turned out that Niu Er walked to the edge of the cave in the haze just now, the whole cave suddenly shook, countless boulders fell, and the two demons retreated behind the door, and at the same time saw the whole cave glowing with a dazzling white light, and then shrank into a ball and submerged into the top of Niu Er's head.

Niu Er frowned and thought about it for a long time, but he couldn't think of any clue, but it was certain that the original cave was probably inside the skull, and it was very related to the spiritual fire blood pill in his heart, and it was also related to the picture he saw.

The little heart was beating wildly, Niu Er tried all kinds of methods, and he couldn't let it move for half a minute, let alone let it jump out on its own, and the color of his face changed, which was extremely complicated.

Take a deep breath and calm your mind, anyway, this skeleton doesn't move, put it aside for the time being, and then find a way to solve it in the future, the most important thing is alchemy, improve cultivation.

Suddenly, he found that the aura in the air was actually thick, Niu Er followed the direction of induction, came to the edge of the cave, reached out and grabbed a stone, and with a bang, the entire stone wall collapsed, revealing the crystal bright spirit stone wall inside, full of fairy aura and brilliance.

"Spirit Stone!" As if the rat demon had been stepped on its tail, it screamed and jumped up, and swooped in front of the spirit stone, his eyes were glowing with a faint green light, and his saliva flowed, as if he was caressing a stunning beauty, and muttered in his mouth: "Mine, mine, all mine." ”

Even Niu Er and Spider were also shocked by this huge spirit stone wall, and after half a sound, they stepped forward, broke off a piece of it in the corner of the wall, put it in front of their eyes and observed it carefully, and finally concluded that this was a spirit stone vein of extremely high purity.

Pulling past the rat demon who was still demented, Niu Er ordered him to use the earth escape to lead the two of them to the ground, only to find that this place was next to his own blood marrow mine, who would have thought that there was a pure and huge spirit stone vein hidden under the low mound next to him.

Niu Er took the spider and the rat demon who beat his chest all the way and regretted it all the way straight to the Mangniu Cave, after thinking about it, he still didn't tell Niu Yu, although a spirit stone mine can make Wushan quickly strong, but who can guarantee that there are no other demon kings' eyes and ears on the mountain, if the wind leaks, it will definitely be a blessing in disguise.