Behind the faint fluorescent forbidden wall was a natural cave of the same size. And it is a long, narrow mountain stream without a dome.

What made Yun Yu a little terrified was that within this huge mountain stream, there were dozens of white bones.

Most of the clothes on these bones were torn, only two of them were still slightly shiny, and although the clothes were covered in bones, there was no flesh left. Obviously, those two slightly intact bones should also be the ones who fell in the last two sessions.

The form of the existence of the two skeletons, Yun Yu could determine that these two monks should belong to the people who were self-extinguished.

Because the two monks were in a very strange posture, they were sitting on the ground with their heads on their stomachs, as if they were resisting something extremely terrifying in their lives, and they could not bear the pain, and finally had to shut themselves up.

Although I don't know what the cultivation realm of those skeleton monks is, the people who can find this place are not weak in their cultivation.

Maybe it's a peak spiritual realm cultivator, and it's very possible. The forbidden wall that could trap and kill the Spirit Realm cultivators, Yun Yu couldn't help frowning.

Just as Yun Yu was thinking in his heart, suddenly, his gaze locked on the bodies of the two silver mangling spirit insects that fell on the stone ground.

These two spirit insects are the Fog Shadow Blazing Insects, but at this moment, the two spirit insects seem to be asleep, just lying still on the ground, motionless.

"Are all these people who have left their bones here because they have been hit by some kind of powerful poison?"

Yun Yu's mind was extremely thoughtful, and when he saw the spirit insect in such a state, his heart suddenly shook, and his mind suddenly became clear, and he suddenly thought of something.

The Fog Shadow Blazing Insect is an ancient kind of wild insect, its own strength is undoubted, the mature spirit insect is enough to fight with ordinary gods, its hands, feet and mouth are extremely sharp, and it can devour the condensation energy of treasures, and it is extremely effective against highly poisonous things.

But at this moment, even if there was a forbidden fluorescence barrier, Yun Yu could also judge that the two spirit insect larvae should have been poisoned by some kind of powerful poison, so they would lie still on the ground.

Glancing over the bones inside, Yun Yu looked deep into the mountain stream.

Suddenly, the blue light in his eyes suddenly bloomed, and his gaze was locked on a boulder in the distance, which was covered in a cloud of mist, and a skeleton-like skeleton was sitting on the boulder.

The sitting skeleton was not covered by a robe, as if it had been reduced to ashes due to the passage of time.

The skeleton skeleton pinched the technique with both hands, although it did not have the blessing of physical muscles, but its body and hands had a very strange shaped technique.

Although the posture of the corpse was different, this was not the reason for shocking Yun Yu. The reason why Yun Yu was shocked was because the skeleton was as black as ink, not the slightest resemblance to the milky white or blue that ordinary bones should have, as if the entire skeleton had been soaked in ink.

Even if Yun Yu's soul sense couldn't sense it, he could know that the bones wrapped in the yin mist must contain extremely strong poison.

The aura emitted by this kind of intense poison made the Fog Shadow Blazing Insect even a terrifying existence that was difficult to resolve for a while.

Looking at the skeleton that sat cross-legged, without flesh and blood muscle patterns but still showing a sitting posture, Yun Yu's gaze was blue again.

At the place where the Danhu Lake of this skeleton was, at this moment, there was a slightly gloomy gray mang, and among the gray mangs, there was a small gray-purple bead hidden in it.

When Yun Yu used all his strength to scan the tiny bead, not only did the voice in his heart sound: "What is that?"

Although the Void Exploration Aura was powerful, it was difficult for him to sense the slightest energy aura fluctuation with the aura at this moment, especially under the wall of the forbidden fluorescent mask.

You can only look at its external state, but for that tiny bead, just looking at the surface, it is difficult to tell what it is.

That tiny bead, he couldn't sense the slightest threat at the moment, but he felt that the yin mist was very weird, as if it was absorbing some kind of aura around.

However, it is only a small size and is condensed around small beads, and does not spread. In addition, the skeleton bones of his body were blocked, and if it weren't for Yun Yu's careful scanning, it would be extremely difficult to find.

I don't know what kind of cloud feather that gray and purple bead is, but he knows one thing, that skeleton should be the reason why the mountain stream that covers the wall contains poison.

Poisonous attribute aura, thinking of this, Yun Yu's eyes suddenly shone brightly.

This kind of attribute is a great temptation for him, and several kinds of secret magic powers on his body all need to be tempered with highly poisonous breath, whether it is a powerful soul silk needle or a strange fire trick fire, or a fog shadow blazing insect and a bird-like spiritual object, they can all absorb highly toxic toxins and refine their bodies.

The wall of the forbidden fluorescent mask in front of him has obviously lost a lot of energy. If you go back thousands of years, you can't find this forbidden fluorescence block even by relying on the Void Exploration Spiritual Light.

But even so, Yun Yu still felt a sense of existence that was difficult to shake.

In ancient times, the prohibition was very different from the forbidden formation that was circulating in the spirit world now, and the forbidden techniques and spells used were even more mysterious.

Although Yun Yu's formation attainments were extraordinary, he did not have the confidence to break the ancient prohibition in front of him.

He had the idea that the prohibition was not to prevent him from entering, but only to imprison the entrant from leaving, otherwise the bones would not all appear inside.

Knowing that the formation ban was set up in reverse, Yun Yu would not choose to step directly into it.

He wasn't worried about the violent toxicity in the forbidden, the two spirit insects were lying still on the ground at the moment, but they didn't fall.

He was extremely sure of this, and in this way, even if the poison was violently powerful, it should not be a great threat to him, at least not at a distance.

After retreating a few feet, as soon as his hand was raised, a red sword light energy flashed out, and slashed straight towards the transparent wall.

"Woo ......!" A slight sound sounded, and a sword light of several feet containing majestic sharp energy had just touched the top of the cover wall, but instead of causing many prohibitions, it did not go straight in, and the trail was not seen in the distance.

In the distance of the prohibition, there was no energy change revealed at all.

Seeing such a strange situation, Yun Yu couldn't help frowning slightly, the prohibition in front of him actually showed an extremely unpredictable devouring effect, as if it could directly devour the powerful Five Elements attribute energy.

After a closer look, he could also see that it was not really devouring, but only relying on the power of the formation, directly dissolving the attack energy and quickly dissolving the regular power such as sharp forward, and the prohibition itself did not absorb the power of other attributes.

Even so, Yun Yu's face was gloomy, a fierce color flashed in his eyes, and as soon as he raised his hand, dozens of sword energy suddenly appeared at the same time, and as soon as he flew out, he immediately fused, and in an instant, he condensed a huge pillar of red light of more than ten zhang, and in a flash, he slashed towards the prohibition in front of him.

"Bang!" This time, the layer of transparent fluorescent prohibition finally let out a thump, but this thump was still not loud.

A cloud of gray-white light flickered, and the wall of the forbidden fluorescent mask had finally changed from just now, but it was only a change, and the anomaly it showed was extremely slight.

At this moment, the attack that Yun Yu was able to sacrifice, this pillar of light that fused dozens of slender sword energy was not the most powerful, but it already had the full strength of the Xuanling Realm early stage cultivator's ability to strike.

Such a powerful attack was only a slight reaction to the prohibition in front of him.

From this, it can be inferred that if you want to break this powerful ancient forbidden, it is really difficult to say that you do not have the power of the peak level of the Xuanling Realm.

"Devouring the Five Elements Energy Yun will also, see if you are powerful or Yun is powerful. After thinking about it for a long time, Yun Yu's expression finally relaxed, and he muttered to himself.

As soon as his body moved, he directly reached the front of the forbidden fluorescence, and a brilliant four-colored light mist suddenly poured out from his body, sweeping towards the light curtain in front of him.

Suddenly, a crackling sound like popping beans suddenly sounded on the spot.

Combined with the special breath of Yuan Yi True Water's intense poisonous mist, the Yuan Spiritual Power Energy, and the power of the Five Elements also has a strong corrosive devouring power, this time it is used to break the ban, and it is the first time that Yun Yu has used it.

The effect was so obvious that Yun Yu was surprised for the first time!

As soon as the energy of the four-colored light mist came into contact with the thin layer of forbidden fluorescence, a cloud of gray-white light shone brightly. The piercing sound of popping beans in a tuntian also sounded in an instant.

A fluctuating aura like ripples suddenly flashed out on the forbidden wall, and the huge forbidden light curtain was completely revealed.

It was as if a hot oil drip fell onto a cold water droplet, and the resulting intense boiling scene suddenly appeared clearly above the light curtain.

An extremely large terrifying suction force suddenly appeared from above the light curtain, as if it was about to forcibly suck the four-colored light mist from Yun Yu into the light curtain.

Suddenly feeling the suction, Yun Yu's complexion suddenly changed drastically, and the special energy in his body surged, stimulating it with all his might. The special huge energy that has been condensed in the body for many years is like a heavenly river breaking through the sky, and it is frantically infused into the four-colored light mist.

The four special energy light mist of Yuan Yi True Water, the intense poisonous mist and the fire energy, the Yin attribute breath and the Yuan Demon True Power, are not ordinary things, they are not like the Yuan Spiritual Power or the Five Elements Energy, and there is no possibility that they can be absorbed again.

The main body of the four-color light mist energy is mainly the energy of the Yuanyi True Water Drama, and if it can still be absorbed by foreign objects, it will be unimaginable.

As Yun Yu frantically condensed the infusion of four special energies, the terrifying induction absorbed by the forbidden light curtain finally stagnated.

At the same time, Yun Yu also felt that the gray and white light curtain in front of him was also rapidly consuming majestic energy at a terrifying speed.

The Yuan Yi True Water Intense Poisonous Mist itself has a powerful devouring effect on the energy of the Five Elements Attributes, and when he was in the Yuanji Mountain Range, Yun Yu had a deep understanding of it.

This time, the secret technique of using the Xuanhuo Strange Stone in which the light wave energy was cultivated into a four-colored mist, this made the extremely terrifying Yuanyi True Water Poison Mist, and its power greatly enhanced.

In the four-colored light mist at this moment, there is not only the ability of Yuan Yi's true water poison to devour and melt, but also the terrifying cutting power of light wave energy.