Immortal cultivation starts with copying.

Chen Yunhao pushed open the door to the last quiet room, and the first thing he saw was an empty quiet room.

Only a formation, about half a zhang in size, was engraved on the floor of the quiet room. This was a fixed formation that could not be moved.

"Huh……!"

Chen Yunhao glanced at it a few times, somewhat surprised.

Although his array formation skills did not match his cultivation level, the array on the ground was clearly a small teleportation array, that was beyond doubt.

A small, portable space has been set up with a teleportation array. Where is it meant to teleport to?

This immediately piqued Chen Yunhao's curiosity. Should he go or not?

After analyzing it carefully, I feel it shouldn't be a dangerous place.

The teleportation array is placed in the quiet room, which is obviously for convenient use. If it were a dangerous place, there would be no need to go to such lengths.

The teleportation array has three corners and three grooves for inlaying immortal stones. Considering the number of stones, the teleportation distance should not be too far.

Chen Yunhao had seen many teleportation arrays. Small teleportation arrays only required three or four immortal stones and had a relatively short teleportation distance.

Large teleportation arrays sometimes require thirty to fifty immortal stones to teleport over long distances.

Chen Yunhao casually tossed three immortal stones into three different positions.

A flash of light appeared on the teleportation array on the ground. Chen Yunhao took out a protective immortal artifact and stepped into the teleportation array.

About 20,000 miles away from where Chen Yunhao entered the small space, it was still in the Ancient Demon Mountain Range, but inside a mountain.

Chen Yunhao looked around. This part of the mountain was not large, only about a hundred feet in size.

The luminous beads embedded in the cave ceiling illuminated the entire cave as if it were daytime, making everything clearly visible.

The entire cave's rock walls are engraved with array patterns, layer upon layer, making the cave as solid as a fortress, impossible to break into from the outside. One can only enter and exit through the teleportation array beneath one's feet.

The cave floor was also engraved with array patterns, which was a disguised spirit-gathering array, somewhat different from what Chen Yunhao knew. It should be an array unique to the Demon Realm.

All the array patterns on the ground pointed to a spot in the very center of the cave, where a man-made pool of water, only five zhang in size, had been created.

Chen Yunhao frowned, stepped out of the teleportation array, and smelled a faint odor of blood.

That cultivator has been dead for ten thousand years, and no one has entered this cave for at least ten thousand years. How can there be such a strong smell of blood?

The spirit-gathering array beneath his feet posed no real danger, but being in an unfamiliar cave, Chen Yunhao still had to be careful.

The entire cave contained only that one pool of water; there were no other items inside, and the smell of blood was coming from there.

Chen Yunhao took small steps and walked slowly forward. He didn't encounter any accidents during the several dozen feet of the journey.

When he reached the edge of the pool and looked down, he found himself in a cave that was over twenty feet deep.

About half a meter down from the edge of the pool, there were dried, brown bloodstains.

The smell of blood emanating from the pool was even stronger, clearly indicating that this was a pool of blood.

However, after tens of thousands of years, without anyone taking care of it, the blood pool has almost dried up, leaving behind a thin layer of viscous blood several feet thick at the bottom.

This must be where the demonic cultivator practiced his demonic arts. With such a large blood pool, the source of the blood is obvious.

Upon seeing that it was a pool of blood, Chen Yunhao lost interest. He didn't cultivate demonic arts, so these filthy things were of no use to him.

Just as he was about to leave to take a look at other parts of the cave, Chen Yunhao stopped again and looked back at the bottom of the blood pool.

"I almost forgot it...!"

Chen Yunhao's eyes sparkled, and a faint smile appeared on his lips.

The previous finds in the small space were not satisfactory, but unexpectedly, I found a treasure that I liked here.

It turns out that at the bottom of the blood pool, beneath the viscous blood, there was a blood-red stone the size of a millstone.

Above the blood-red stone, there grows a crystal-clear plant, a miraculous herb over ten thousand years old.

However, due to the passage of time, it was unclear whether he was dead or alive. He lay to the side, covered by the remaining blood, which prevented Chen Yunhao from discovering him immediately.

The aura emanating from this medicinal herb was not celestial energy, but rather blood energy, though it wasn't very strong; otherwise, it wouldn't have gone unnoticed immediately.

Chen Yunhao stretched out one hand and grabbed downwards, causing the blood-red stone beneath the blood to slowly rise up.

A moment later, it hovered in front of Chen Yunhao's eyes, and the closer it was, the clearer the sensation became.

That medicinal herb doesn't seem to have completely lost its vitality; it's just that it's been too long and lacks nutrients.

Looking at the immortal medicine lying on the blood-red stone, Chen Yunhao carefully recalled the scene in his mind.

After arriving in the Immortal Realm, he browsed through a large number of ancient books, and his knowledge was no longer what it used to be.

He had once read a record of top-tier celestial medicines from the immortal realm, and it seemed that such a celestial medicine was mentioned in it.

It looks quite similar from the outside. The entire elixir is only half the height of a person, as thick as an arm, and has six or seven branches, all of which are crystal clear.

The leaves at the top are light red, and the veins on the leaves look like human faces.

Although this entire medicinal herb was soaked in blood with an extremely strong fishy smell, it emitted an extremely fragrant and refreshing aroma.

It's just that it looks a bit wilted right now, as if it has lost all its vitality. Actually, it's similar to a monster hibernating, temporarily shutting off its life force.

This is a Blood Essence Immortal Herb, and it is already mature.

Blood Essence Grass can replenish an immortal's innate and acquired blood essence, which can powerfully propel an immortal to break through a minor realm.

Actually, this is not its main function. Its main function is to prolong life, at least by a hundred years.

Although immortals have long lifespans, they are not endless. One day their energy and spirit will be exhausted, their lifespan will end, and they will surely perish.

The Blood Essence Herb can replenish the essence, qi, and blood of an immortal, thereby extending their lifespan by at least a hundred years.

A hundred years is not much for an immortal. This is also an opportunity for him. If he can make another breakthrough within these hundred years, his lifespan can naturally be extended.

However, this Blood Essence Immortal Grass grows extremely slowly, and its growth requirements and conditions are extremely demanding. Sometimes it may not even take 30,000 to 50,000 years to take shape.

The blood pool before us is a man-made arrangement, a step to accelerate the maturation of the Blood Essence Immortal Grass.

It seems rather regrettable now, as the demonic cultivator ultimately did not live to see the Blood Essence Immortal Grass mature.

Without a mature Blood Essence Immortal Grass, eating it will have no effect and may even have some adverse effects. Now, it's a good deal for Chen Yunhao.

The blood-red stone attached to the root of the Blood Essence Immortal Grass is also a treasure, because it is because of this stone that the soil for its growth exists.