To Qu Wuming's surprise, among the storages, there was a hexagonal black crystal that was more than a foot long and four feet square!

There was no breath escaping from the black crystal, as if it was an ordinary black crystal, but the inside of the crystal was extremely pure, clean without the slightest impurity, although the whole body was black, but the light passing through the thick crystal could be vaguely seen.

In the middle of the crystal, there was a black mass about the size of a washbasin.

The mass was dark in color, completely soaked in some almost transparent liquid, and as Qu Wuming moved the crystal with the power of his divine sense, the mass began to sway back and forth in the liquid, like an extremely elastic black dough.

Perhaps it was Qu Wuming's action that disturbed the lump, and a stream of ink-like liquid suddenly erupted from the black dough, dyeing all the transparent liquid around it black in an instant, and then, Qu Wuming clearly heard that there seemed to be a bone-chilling crashing sound in the liquid, as if something hard, like a small ball, rolling back and forth in the middle of the crystal, and the sound of hitting it.

Qu Wuming couldn't help but be stunned when he heard this, and soon showed a look of joy on his face, and after thinking for a moment, he sent the storage ring containing the black crystal directly into his Purple Mansion space, and placed it properly and preserved it.

Qu Wuming didn't expect that he had just occasionally mentioned it in the idle chat, but Mu Yanqing actually put the black crystal in the storage ring and threw it to himself before parting, leaving himself no chance to shirk and refuse, and his feelings for this saber-toothed electric light beast in his heart couldn't help but improve a lot.

The black crystal, called "Stygian Crystal", seemed to have no energy fluctuations, but it was actually a special crystal of extremely high grade and extremely strong energy - that Stygian Crystal seemed to be of no use to the daily cultivation of cultivators in the Ten Directions Realm, because the energy contained in it was not something that cultivators in the Ten Directions Realm were capable of directly absorbing and utilizing.

However, if this kind of dark crystal is activated by a special formation, it can stimulate a huge amount of energy, whether it is used to provide driving energy for some puppets, traps, and large arrays, or to release them all at once, producing an extremely strong explosion, its effect is far beyond that of high-level spirit stones and some ordinary energy crystals! In the Ten Directions Realm, it can be called a priceless treasure in the market!

You must know that just a thumb-sized piece of Dark Crystal can maintain the uninterrupted normal operation of a sect's Sect Protector Array for more than a hundred years! And the dark crystal in Qu Wuming's hand is more than a zhang long, and the thickest part is more than four feet!

And this piece of priceless crystal, compared to the black "dough" in the transparent liquid in the middle of it, is far from it.

The thing that looks soft and squirming on its own in the liquid is called "Hei Tai Sui", and it is a strange creature unique to the underworld.

It is said that it is a living thing, but it is not true. It is said that more than 10,000 years ago, someone obtained a fist-sized piece of "Black Tai Sui", and after cutting it open, it was found that there were no facial organs, no blood vessels, and no veins.

However, Hei Tai Sui was able to move on his own in the liquid of his own life, expanding and contracting as if he was alive, as if breathing, which was enough to prove that it should be something with life, but it was just beyond the comprehension of the cultivators of the Ten Directions Realm.

And later, after the "Black Tai Sui" was carefully studied, and finally chose to refine and devour it, the first person to take the risk of subduing it actually increased his longevity for more than 100 years by virtue of white - the original sparse white hair became black and dense overnight, and the wrinkled face became smooth and moist as if it was rejuvenated, and the cultivators of the Ten Directions Realm knew that this "Black Tai Sui" actually had the miraculous effect of prolonging life and rejuvenating!

In the thousands of years that followed, "Hei Tai Sui" became the primary thing that people wanted to find in the underworld - prolonging longevity, which was the dream of many cultivators who were about to reach the end of their life!

However, the Stygian Crystal is already hard to find, and the "Black Tai Sui", which grows specifically in the Stygian Crystal and seems to feed on the Stygian Crystal, is even rarer. For thousands of years, many cultivators in the Refining Void Period ventured to the Underworld to look for it, but in the end they found nothing. There are only two people who are lucky enough to find "Hei Tai Sui" for thousands of years.

However, one of them got not just an ordinary Black Tai Sui - but a Black Tai Sui that could transform into a black crystal!

Subsequent research proved that the black Tai Sui, which turned into crystals, did not have the miraculous effect of prolonging life and rejuvenating.

But its effect seems to be far more rebellious than that of ordinary Hei Tai Sui.

Because, it can bring the dead body back to life.

Only a piece the size of a finger belly is ground into powder, and mana is used to penetrate the body, even if it is a thousand-year-old dry corpse, as long as the body is intact and undamaged, the body will recover like a living person after absorbing enough water and aura.

Except for one thing—and that's the soul.

Only after the newly deceased are resurrected by this spar can they live a normal life as before and have a lifespan of no less than a hundred years. And once forty-nine days have passed, the resurrected man will be alive only physically, but he can only lie there like a living dead, unaware and unresponsive to everything outside the world.

Since those experiments, the name of "Tai Sui Crystal Nucleus" has completely resounded throughout the Ten Directions Realm.

This is simply a life-stealing artifact!

Which cultivator of the Ten Directions Realm wouldn't want to have such a piece of "Tai Sui Crystal Nucleus"? After he died, he was resurrected and his life was extended for a hundred years, and in the hundred years that came out, his cultivation could go further, and he would have a long life, and he would be able to achieve true immortals and live with heaven and earth in the future.

Or you have to have a dream, otherwise how is it different from a salted fish?

Even though there is little hope, there is always a dream, what if it does come true?

And this time, among the bounties released by Dan Shizong, there is one content - a piece of Tai Sui crystal nucleus.

Originally, at the earliest, Qu Wuming planned to use the Wutu Orb to sneak into the underground and try his luck by looking for a needle in a haystack, maybe he could search for some places underground that were prone to produce dark crystals, and if he was lucky, it would be worth the trip to find a piece of dark crystals growing with Black Tai Sui. Unexpectedly, before he could bother to find it, Mu Yanqing gave him such a big gift.

If this basin-sized Black Tai Sui can be separated into a small part and continue to be cultivated in the Dark Crystal, wouldn't there be an endless amount of Black Tai Sui to use in the future? It's just that I don't know if the method of artificial cultivation is suitable for this kind of divine artifact that conquers the heavens and the earth......

Qu Wuming once again sacrificed the "Falling Star" orb and flew forward underground, thinking a little excitedly in his mind, so he gradually left the dense wooded area and continued to move in the direction of the Ghost Ming Plain.

The next goal, Soul Cultivation Crystal!

If another Soul Nourishing Crystal is collected that is at least the size of a fist, then among all the items offered by the Dan Master Sect, there will only be three things left that Qu Nameless has not gathered. As for the Tai Sui crystal nucleus and ghost servant holy blood that had been collected, Qu Wuming felt that the things in his hands were enough to surpass many people in terms of quantity and quality.

————

After a few hours, Qu Wuming was used to sneaking underground, and he didn't want to go up to the surface at all.

Underground stealth is slower, but it's quiet, safe, and direct. Unless you have to fly up and escape for a while when you encounter the underground water system or the earthfire and fire veins, you can avoid conflicts with more than ninety percent of the creatures of the underworld in the underground earth, which is really a necessary means to travel and concentrate on traveling.

You must know that above the ground, the creatures of the underworld are strange, and the devil knows if they are flying and suddenly rushing out of something to fight you.

Two hours ago, Qu Wuming had "seen" with his own eyes through the "Falling Star" Orb that a Terran Refining Void Stage cultivator who seemed to have seen him somewhere, was chased by a large group of bloodthirsty demon bats and fled in a hurry, and finally was drowned in a group of bloodthirsty demon bats.

You must know that among the group of bloodthirsty demon bats, the most powerful individual is only comparable to the cultivation of the Yuan Infant Stage, but it is such a group of strange creatures with low cultivation, but they can be immune to many means of magic attacks, and even the magic weapons sacrificed by the cultivators of the Void Refining Period, under the special sonic attack released by their group, will be shocked full of cracks in a short period of time!

Ants bite elephants to death, that's the case, right?

At that time, Qu Wuming went underground, chasing after the group of bloodthirsty demon bats and the Terran Refining Void Stage cultivator for a while, and soon saw that among the bloodthirsty demon bats huddled in the air, dozens of white bones that had been gnawed away from the flesh and blood were constantly falling down, and there seemed to be two storage rings and some bloody rags mixed with them.

A moment later, the group of bloodthirsty demon bats dispersed violently, turned into a dark cloud, and flew towards the cave at the foot of a certain mountain peak in the distance, and the place where the original Terran Refining Void Stage cultivator was already empty.

When the surroundings were already quiet, an earthy yellow light suddenly flashed on the ground, and the two storage rings that fell into the barren grass had disappeared.

It's just that the valuables of cultivators in the refining period are generally stored in the Purple Mansion space. Among the white bones that fell down at that time, the skull of the cultivator was not found, and it must have been taken away or devoured by the group of bloodthirsty demon bats, as for the purple mansion space inside the skull, it may only be revealed when it collapses on its own.

Qu Wuming didn't have the courage to follow the group of bloodthirsty demon bats to the cave and wait for the skull to collapse and explode, maybe a lot of good things would burst, but he had to have the life to rob the bloodthirsty demon bats......

And in the underworld, there are not a few strange creatures like the Bloodthirsty Demon Bat that can crush the quality of cultivation with quantity. Those who live underground are not without ......