The unknown existence knew that it couldn't stop Su Yun's advance, so he stopped roaring and secretly planned unknown means.

The pitch-black ancient cave was silent, and there was no sound, Su Yun stopped, stood for a long time, and thought of some bad things, but in the end he didn't change his mind, and still chose to move on.

He walked alone, unhurriedly, paying attention to everything around him, only to find some carvings on the stone wall, recording some ancient myths that had been passed down in the mortal world.

After more than ten miles of walking, the soil on the ground suddenly became soft, and the soles of the feet on it could completely submerge and turn gray-white.

At first, Su Yun didn't care, but after walking out for hundreds of zhang, he felt that it was getting more and more cold and biting, and the yin qi here was extremely heavy, like a north wind blowing snow on his body.

When he stepped on a hard object and made a cracking sound, Su Yun suddenly understood what kind of place he had come to.

The grayish-white color of the ground is not the usual earth, but the ashes. There are also dry bones hidden in it that have not completely dissolved, and the yin qi is emitted by these ashes.

He had wandered this Middle-earth for millions of years, and he was not afraid of the dead, but he had to wonder how many dry bones it would take for these ashes to pile up.

In the past countless years, Su Yun entered the mortal world from time to time, treating himself as an ordinary person, spending a short life of decades or more than ten years, and often going to the battlefield, or a sword-wielding general, or a soldier, experiencing countless battles that sacrificed his life and forgot to die.

In the battle of hundreds of thousands of people at every turn, the death toll is countless, and after turning into dry bones, it is just a wisp of fresh wind, and then it dissipates without a trace, but it is not like here, piled up like a mountain, terrifying and cold.

Suddenly, several creatures shrouded in black smoke flew overhead, and Su Yun's powerful divine thoughts swept over, knowing that it was a demon bat that had disappeared on the Middle-earth Continent for many years!

Although he was a little surprised, it didn't stop him, so Su Yun continued to move forward.

Walking far away, the gray-white ashes are still not at the end, and a layer of lip-thick has accumulated in the ancient mine.

"Click"

After continuing to walk for hundreds of meters, the ashes are gone, replaced by dry bones, dense, everywhere, long decayed, lightly stepped on, it will turn into ashes, under the power of the years, nothing can last long, except for himself.

When I arrived here, the ancient cave was like an ice cellar, and the cold air was scraping on people's skin like a knife.

"No wonder the devil bats live here, and as recorded in ancient books, they like to live on the edge of the great land. ”

Su Yun was on high alert, he didn't want to lose his life in the ancient cave inexplicably before he entered the heavens and the earth.

"Woo-woo-woo-"

A cloudy wind howled, shadows and shadows were sufficient, and among the piles of dry bones, hazy ghost shadows appeared, very faint.

"Is there really such a thing?"

Su Yun was extremely surprised in his heart, and a cloud of purple qi appeared in his right hand, turning into a three-foot-long measuring ruler, and walked forward unswervingly.

This three-foot-long measuring ruler seems to really have the power to ward off evil spirits, and those shadows have faded one after another.

"Whoa..."

Among the piles of dry bones in front of him, there was the sound of iron cables, and Su Yun's heart sank, and he felt a cold evil aura.

He leaned against the wall of the cave, silently moving forward, the aura around his body converged, and the Taoist Hongmeng purple qi appeared, protecting him impenetrable and without leakage.

Just more than 100 zhang in front of him, a deep black hole appeared on the rock wall of the ancient cave, and the sound of the iron cable shaking came from inside.

The hole was so deep that the chill was terrifying, and it turned into a tangible substance that overflowed, touching the skin of the person and hurting like a pinprick in the face.

Su Yun hurriedly grasped the measuring ruler tightly, and at the same time summoned the purple gold qilin Lele, allowing its divine aura to naturally flow, mixed with the Hongmeng purple qi, and the golden light was extremely peaceful.

In the depths of the black hole, there was an inaudible roar, accompanied by the sound of the iron rope shaking, as if a murderous creature had been suppressed.

It can be clearly seen that there are many ghosts among the piles of dry bones, which shatter with that roaring sound, turn into yin qi, and are swallowed into the black hole.

"What is this?"

Su Yun frowned, thinking that it was definitely not a good kind, I was afraid that it was a super murderous thing.

You know, three thousand years ago, that huge stone tablet smashed here, and a lot of living beings died here, bleeding and drifting, and after so many years, it is normal for a fierce spirit to be born.

"It doesn't matter what it is, as long as it doesn't stand in my way. ”

He secretly estimated it, and felt that the murderous creature would not rush out, so he carefully walked around and continued to walk towards the depths of the ancient cave.

"It seems that the purple qi that those old Taoist priests at the south gate have been brewing all day is not useless, at least the filthy things can't get on their bodies. ”

After a long distance, the dry bones finally disappeared, and the ancient cave was very dry, and there was nothing left.

Su Yun estimated the distance, and he was already about twenty miles deep, and he didn't know how far ahead he was before he could see the secret that frightened the unknown existence.

After another four or five miles, there was a light ahead, swaying and very soft.

This surprised Su Yun, he had just walked through the pile of dry bones, and in his opinion, he must have entered the land of great murder, and it would become more and more dangerous.

However, just a few miles away, there was a strong aura rushing to the face, making people feel peaceful.

"Just out of the corpse pile, there was a pure land"

There was a crane chirping in front of him, which was not an illusion, because he had already seen it for real, and thought that he had come in ahead of time.

After a few miles, a bright world emerged, the ancient cave was no longer dark, and the soft light flowed, a piece of peace and holiness. "This is the breath of the spirit of all things!"

Although it was bright, it could not be seen far, and the fog flowed, blocking people's view.

Su Yun was a little dazed, those mist were formed after the spirit of all things dissolved, this was the vigorous life essence.

"Everything is overflowing, and there must be a lot of pure creatures here. ”

Su Yun searched, but found nothing.

The aura was fluttering, the light was shining, and a crane spread its wings and passed by, as if it didn't see him, soaring in the ancient mine.

"What is this?"

Su Yun was quite surprised.

"Roar!"

Then he saw an earth dragon, with a lizard body and dragon scale armor, crawling not far away, its huge body looked very heavy, and he didn't look at him either.

Then, a flock of fiery red birds flew by, flapping their wings and causing the air to stir violently.

"How can there be these extinct creatures?"

He was shrouded in Lele and Hongmeng purple qi, these creatures didn't feel his breath, he was a little dazed and stood in the middle of the field.

According to Su Yun's understanding, this is a place of death and silence, and there can't be anything, but at the moment, he is a little incomprehensible.

"The spirit of all things, it is formed by the incarnation of spiritual energy!"

Su Yun was suddenly shocked in his heart, and said, "There is absolutely no such creature in the ancient cave!"

"There are spirits of all things here!"

He thought of the records he had seen in the "Cultivator Immortal Compilation", and after some of the spiritual energy of all things overflowed, they would turn into all kinds of inexplicable creatures, galloping and roaring around.

His heart suddenly fluctuated, if he found the spirit of all things, maybe he would have an unexpected harvest, it was a treasure that the holy land fought for, and he did not hesitate to tear his face.

Su Yun held the measuring ruler in his hand and stood in front of him, looking for it in the dense aura.

"Click!"

There was a sound of bones cracking under his feet, and he frowned, there were many white bones in such a peaceful place.

"Huh, what is this?"

Su Yun was taken aback, these bones could not have been left three thousand years ago, they were all hard and shiny.

He crouched down in the mist, looked closely, and saw more than a dozen skeletons one after another, some of which were thousands of years old, while others of white bones seemed to be only a few hundred years old.

"It seems that over the years, people have strayed here from time to time. ”

Su Yun was awe-inspiring in his heart, these people had all died here, and it seemed that this peaceful place was not as simple as it seemed on the surface.

Cranes, earth dragons, flocks of fiery red birds, and other creatures hovered and ran around.

In addition, Su Yun also found a lot of huge deep pits, all of which were fossilized bones, all of which were some strange ancient creatures.

He felt that this place was very strange, and slowly moved forward in the ancient cave, and after walking for more than ten miles, he finally came to the place where the aura was the strongest.

In addition, he felt a terrifying killing intent here, and his heart was throbbing.

Just ahead, there are two bottomless holes, one is full of spiritual energy, and there is constantly spiritual energy rolling up, and the other is fierce, which is more terrifying than the sharpest sword, which makes people's hearts tremble.

The two were close together, and around them, there was a dead silence.

Su Yun was really surprised, these two black holes were very similar to the yin and yang eyes in the Taiji diagram, if you draw a circle around them, this is simply a natural Taiji diagram.

In fact, they did work like this, and the hole that spewed spiritual energy was surrounded by fossilized bones. And the hole that shot out the evil qi was surrounded by brilliance and spirit stones.

Negative yin and embrace yang, negative yang west hug yin, this is completely today's natural Taiji diagram, not artificially carved, this is the great power of nature.

"Contains the divine power of the Great Dao!"

Su Yun's heart shook, what did the invincible old man do three thousand years ago, the great momentum of this place is immovable, unmoving, seeing the subtle knowledge, peeking at a spot and knowing the whole leopard, seeing a piece of ice and knowing the winter cold.

Before I found the secret, I saw such a landscape, and you can imagine the horror of this place.

It was indeed a natural Taiji diagram, where the source qi and the evil qi flowed together and crossed the front.

Su Yun saw a lot of dry bones in front of this natural Taiji diagram, he had to squat down to take a closer look, if there was the breath of the old man left here, there was no need for him to continue to move forward.

Su Yun was carefully observing the twenty or so dry bones on the ground, judging from their bone quality, they had existed for thousands of years to tens of thousands of years, and all of them were pierced by sword qi.

Su Yun picked up a dry bone and threw it towards the natural Taiji diagram.

"Huh..."

The source qi and evil qi swirled, forming thousands of sword rays, and the dry bone was wiped out at that time.