After Wu Yan came out of the small world space of the Heaven Devouring Demon Venerable, he and Gu Yao Lao Dao arrived at a desolate planet that was closest to the entrance of the Ancient Demon Tomb.

Under the entrustment of Gu Yao Lao Dao and others, a very large formation was arranged by Deadwood Tianzun on this desolate planet.

Around this formation, it was even more powerful by the Venerable Beings, penetrating hundreds of powerful origin veins, and even several heavenly path and earth veins, which were specially designed to provide energy for Gu Yao Lao Dao and Wu Yan Alchemy.

Among the more than sixty kinds of detoxification pills refined by Gu Yao Lao Dao, more than a dozen of them all had to use the corresponding Heavenly Dao prohibitions, if there was no Heavenly Dao earth vein to provide Gu Yao Lao Dao with the power of Heavenly Dao, even if he relied on his cultivation realm, he would not be able to successfully refine the corresponding pills.

When the two of them entered the incomparably extravagant formation that had been arranged, prepared all the matters, and planned to start alchemy, the entrance to the Desolate Ancient Demon Tomb, which was only opened once in 10,000 years, was finally opened.

It was the first time Wu Yan had come to this kind of place, and it was the first time he had learned that there was a place like the Ancient Demon Tomb in the Bitter Sea World, so he naturally didn't want to miss the grand occasion when the Ancient Demon Tomb opened.

What's more, when the Ancient Demon Tomb is opened, there are indeed many strange things that will happen. According to Gu Yao Lao Dao, although the entrance to this desolate ancient demon tomb will only be opened once in 10,000 years, it is not possible to enter it every time.

Sometimes, when it is opened, the power of the dark demonic qi is at its most active, or when it is the strongest, even if it is Hongmeng Tianzun, he does not dare to break into it.

On that planet, under the support of the formation, Wu Yan rushed to the top of the formation, and looked at the end of the galaxy through the formation.

I saw that the originally dark demon cave was lit up with black light at this time, making the demon cave look clearer and clearer.

Inside the demon cave, there was a rolling demonic qi erupting outward.

The scene of the eruption of demonic qi was somewhat similar to the scene when the space-time demon river erupted that Wu Yan had seen during the wandering of the Void Galaxy.

It's just that the amount of demonic energy spewed out of the demon cave in front of him is obviously not comparable to that space-time demon river.

Even, even the unknown vast galaxy that everyone is staying in now is formed by the demonic energy erupting from the demon cave and the power of the stars in the heavenly galaxy.

What's even more weird is that those demonic qi are different from any demonic qi Wu Yan has ever seen.

At first glance, they don't seem to be a threat.

Because, on the surface, the planets or starfalls that have washed away by it do not seem to have changed at all.

But the real situation is clearly not the case.

What has changed is not the surface, but the inside.

In fact, where the dark demonic energy passes, all the power has been transformed into the power of darkness, and all the vitality has also become a dead machine.

The death machine that was transformed by the vitality devoured by the dark demonic qi was completely indistinguishable from the surface, because its Heavenly Dao Law seemed to have not changed in the slightest.

This is the truly terrifying place of the Dark Demonic Qi, and it is also the real reason why the Hongmeng Immortal Realm was destroyed by it back then.

At the beginning, the great powers of the heavens in the Hongmeng Immortal Realm were blinded by this situation and failed to make preventive confrontations as soon as possible, which led to the collapse of the Hongmeng Immortal Realm.

However, I saw that the rolling dark demonic energy, after spewing out from the demon cave, continued to form a strange colorful nebula in the galaxy, looking from a distance, it was as gorgeous as a rainbow bridge.

If someone who doesn't know why crashes into the nebula belt of the Rainbow Bridge, I'm afraid that they will still think that they have entered the most magical Colorful Sacred Mining Area in the galaxy.

The Rainbow Bridge Belt washed out by the dark demonic energy was indeed very similar to the Colorful Sacred Mine, which was the most mysterious and most attractive to immortals in the Heavenly Galaxy.

The rainbow bridge is constantly changing, and all kinds of incredible scenes are derived from it, and the illusions are numerous, showing the horror of the dark power to everyone.

Anyone who was able to come here had obviously made the most detailed preparations for this, so naturally he would not be attracted by the illusion in the Seven Rainbow Bridge.

Wu Yan's gaze then turned to the bodies of the Heavenly Venerable Star Lords who were standing closest to the Demon Cave.

All the Heavenly Venerables and Star Lords, including the Sanqing Xuanzun, the Heaven Swallowing Demon Venerable, the Beidou Sword Venerable, and the Doutian Holy Venerable, all stood around the Demon Cave at this time, holding their breath one by one, staring at the rolling demonic qi in the Demon Cave with all their attention, as if they were waiting for something to rush out.

Those Great Immortal Venerables and Peak Immortal Venerables, one by one, were all guarding an area farther away from the Demon Cave, and they all opened their eyes equally, staring nervously at the rolling demonic qi in the area in front of them, waiting for something to appear.

Gu Yao, who was alone in the formation, didn't seem to care much about this, he had already taken out the medicine tripod that imitated the Nine Dragons Sacred Tripod of Hongmeng Medicine Venerable, and began to refine the first detoxification pill.

At this time, Wu Yan was clearly arranged around the Demon Cave by those Heavenly Venerable Star Lords and Immortal Venerables, which aroused great curiosity.

He wanted to figure out what these people were waiting for.

This doubt did not last long.

Rumble!

A loud bang suddenly came out from the rolling demonic qi, and then, I saw the colorful glow of the Dao Dao flickering out of the demonic cave.

Then, a seven-colored spar with a size of tens of thousands of zhang suddenly rushed out of the rolling demonic qi of the demon cave without warning, and suddenly arrived in the galaxy.

The colorful spar is crystal clear, and the whole presents a very mysterious spiral cone.

What's even more bizarre is that the inside of the spiral cone seems to be composed of countless smaller spiral cones that are colorful in color.

A piece of colorful spiral cone spar tens of thousands of zhang in size suddenly appeared in the demonic qi, which was indeed a bit sudden, but the eyes of all the Heavenly Venerable Star Lords were radiating essence light.

Dozens of Heavenly Dao Holy Lights of different colors then soared into the sky around the Demon Cave, and then, these Heavenly Dao Holy Lights turned into palms of different shapes, all of which grabbed the colorful spars of the spiral cone.

The Great Immortal Venerable and the Peak Immortal Venerable on the periphery obviously also saw the appearance of the spiral cone, and their eyes showed incomparable envy.

It's just that no one dares to fight with those Heavenly Venerables.

The Tianzun who made the move was neither the Hongmeng Tianzun like the Heaven Devouring Demon Venerable, nor the Tianzun Star Lord who had just stepped into the realm of Tianzun, but those middle- and high-level veteran Tianzun who had been famous for hundreds of thousands of years in the heavens and ten thousand worlds.

Wu Yan didn't know what the seven-colored spar of the spiral cone was, and couldn't help but pay attention to the discussions of the envious immortal venerables around him.

"What a big piece of Dark Demon Crystal! I'm afraid that this is the Dark Demon Crystal left behind after the fall of a Dark Demon Venerable with mid-level strength, right? You see that every small magic crystal that makes up the entire Demon Crystal has an extremely terrifying Dark Heavenly Dao power!"

"It's a pity that this level of magic crystal, it's impossible for us to compete for it. I'm afraid that even a small piece of magic crystal that was broken in it will be snatched away by those seniors!"

At this moment when they were discussing, the dozens of Heavenly Dao Great Palms of different colors had all grabbed the dark magic crystal.

In the next moment, a spiral cone spar tens of thousands of zhang in size was grabbed by dozens of heavenly dao big palms, and suddenly exploded into tens of thousands of spiral cone spars of a size of tens of thousands of zhang.

These spars were like living and spiritual Dao spirits, and after they exploded, they suddenly fled frantically in all directions.

It's just that, after all, they are just spars, and the Heavenly Venerable Star Lords have already prepared everything, and after seeing the appearance of this scene, the dozens of middle and high-level veteran Heavenly Venerables who shot out did not panic at all, and grabbed the Heavenly Dao Great Palm one by one.

In an instant, tens of thousands of small magic crystals that were about the size of a foot were divided up by them.

An undetectable colorful glow, in a flash, appeared in the rolling demonic qi, and in the blink of an eye, it rushed to the area guarded by the great immortal venerables in the middle reaches.

Seeing that colorful glow, the eyes of all the Immortal Venerables lit up one by one, and in an instant, there were thousands of Great Immortal Venerables, condensing the Great Dao Saint Yuan Immortal Paw, and grabbed towards the rolling demonic qi.

Between the surging demonic qi, thousands of Dao Shengyuan cactus collided together, and the shocking demonic qi scattered in all directions, and a spiral cone magic crystal the size of a zhang that leaked from the upstream appeared in front of everyone's eyes.

After seeing the magic crystal, the thousands of Great Immortal Venerables who made the move flashed with madness in their eyes, and they worked harder and harder to encourage the Dao Saint Yuan to grab the magic crystal.

One of the strongest Great Immortal Venerables, his Great Dao Saint Yuan Cactus, suddenly grabbed the magic crystal, and under great joy, he hurriedly shrank his Saint Yuan Immortal Palm back.

The rest of the Great Immortal Venerables were annoyed, and they frantically aimed the Shengyuan Immortal Palm at the Shengyuan Immortal Palm that he quickly recovered, and grabbed it, trying to snatch the magic crystal.

However, at this moment, a Heavenly Dao Great Palm suddenly appeared in the galaxy, and with one grasp, the Great Immortal Venerable's Great Dao Saint Yuan Immortal Palm was directly grabbed and destroyed, and the magic crystal also fell into the Heavenly Dao Great Palm that suddenly appeared.

"You...... What do you mean, senior?"

The Great Immortal Venerable who had robbed him of the Demon Crystal was suddenly angry and angry, and he roared at the Celestial Venerable who had robbed him.

Hearing the question of the Great Immortal Venerable, the low-level Heavenly Venerable sneered, carefully put away the magic crystal, and said to the Great Immortal Venerable: "The Dao Spirit Demon Crystal left by the Intermediate Dark Demon Venerable, how can you bear it as an Immortal Venerable?"

After saying this, the corners of that Tianzun's mouth showed a hint of ridicule, and he turned around and left.

"Seniors, it's the juniors who grabbed it first, you ......"

The Great Immortal Venerable was even more angry, and judging by the expression on his face, he seemed to have the intention of competing with that low-level Celestial Venerable.

However, before he could take action, he suddenly felt that his Purple Mansion Dantian was different.

Shocked, he hurriedly looked inside the Purple Mansion, and strange things also appeared at this moment.

I saw that this Immortal Venerable, who was one of the best among the Great Immortal Venerables, collapsed without warning, leaving only a seven-colored spar the size of a human head spiral cone in place!

The colorful spar of this spiral cone looks the same as the previous one, but the breath is weaker than one and a half points, but it is not even one ten-thousandth of it, and its breath is the same as the great immortal Venerable who collapsed and disappeared!

Such a strange scene, the surrounding immortal venerables were suddenly shocked and fled in all directions!