According to the guidance of Hongmeng Daoyin, Feng Zichen went around in Buzhou Mountain, and it took several years to come to a place shrouded in mist.

When he arrived here, without waiting for Feng Zichen to make a move, the Hongmeng Dao Seal automatically appeared in front of him, blooming with Dao Dao purple divine light, and fell towards the misty place.

As if encountering a natural enemy, under the illumination of the purple divine light, the mist melted like ice and snow and disappeared without a trace. A sinister valley is revealed.

In the valley, strange rocks and grass are overgrown, showing a desolate scene. There are even wisps of congenital evil qi emerging from the ground and wafting in the valley.

Looking at the slightly desolate valley ahead, Feng Zichen's face was full of doubts. I couldn't help but stop and stopped.

This place is not Zhou Mountain, the backbone of Pangu is transformed, and the flood is the most sacred place. How could there be a demonic aura? And it was the innate evil aura carried by the Chaos Demon God?

After pondering for a moment, Feng Zichen couldn't think of an answer, and decided to go to the valley to find out one or two. Then he raised the merit and spiritual light, and walked into the valley with the Hongmeng Dao seal.

As if sensing an unfamiliar breath, Feng Zichen had just stepped into the valley. The innate evil qi that permeated the valley suddenly became restless and swept towards him.

"Buzz!"

With a light tremble, the Hongmeng Dao Seal hung down a hazy purple light, enveloping the wind purple in it.

This is the light of Hongmeng Dao, the light of origin, and the light of the avenue. Ten thousand laws can be derived, and ten thousand laws can be destroyed.

Before the innate evil qi touched Feng Zichen, it was blocked by Hongmeng Daoguang. Between the entanglement of the two, only a sizzling sound sounded, and the innate evil qi was destroyed by the Hongmeng Dao Light.

As Feng Zichen continued to go deeper, the innate evil qi in the valley continued to attack him, and it gathered more and more, as if it was endless.

In this case, although Feng Zichen had the Hongmeng Daoguang Protective Body, he still felt that it was difficult. It is like a small boat in the sea, which is in danger of capsizing at any time, and is overturned by huge waves and submerged in the sea.

Looking at the Hongmeng Daoguang that kept trembling under the attack of the innate evil qi, Feng Zichen's heart trembled a little. He took a few steps back, intending to leave the place first. When you think of a perfect solution, come here to check it out.

However, just as Feng Zichen retreated, a stone under his feet suddenly exploded. Turning into a thick congenital evil qi, it attacked him from the ground.

Then, the explosion of the stone seemed to have a chain reaction. I saw the gravel and weeds in the valley burst open one by one, turning into a thick congenital evil qi, attacking Feng Zichen from all directions.

It turned out that these gravel and weeds were infected by the congenital evil qi day and night, and they had long been integrated with it. Today, stimulated by external forces, they broke out one by one, which caused the situation that Feng Zichen is facing now.

"Come back!"

With a flash of Hongmeng Dao light, the innate evil qi from the underground was shattered. However, before Feng Zichen could breathe a sigh of relief. Seeing countless innate evil qi attacking him from all directions, he couldn't help but secretly cry bitter in his heart.

At this time, Hongmeng Dao Yin seemed to be angered by the innate evil qi, and burst out with unprecedented light.

Hongmeng's qi gushed out, deriving countless avenue runes, covering the entire valley. It forms a scene when the world has not been opened and Hongmeng has not been judged.

Under the shroud of Hongmeng's qi, the congenital evil qi that was arrogant just now is now powerless to fight back. In just a moment, he was swallowed and assimilated by the qi of Hongmeng.

After the innate evil qi was devoured, the Hongmeng Dao seal swirled, and the Hongmeng qi that enveloped the entire valley began to shrink. In the blink of an eye, it shrank into a ball and returned to the Hongmeng Dao Seal.

As the innate evil qi disappeared, the true face of the valley was finally revealed.

Empty, empty!

The gravel, the weeds, all disappeared, and even the innate qi did not exist. Only the pitch-black mountain was exposed.

This valley has been completely eroded by the innate evil qi. The black color it appears is the same as the color of the innate evil qi. Above the mountain, a new congenital evil spirit is bred.

Reaching out to touch the ground, Feng Zichen only felt a wisp of innate evil qi rise from the ground, and rushed towards the sea of knowledge along his index finger, wanting to destroy his reason.

Hurriedly retracting his fingers, Feng Zichen mobilized the Hongmeng Qi in his body and refined the innate evil qi that had entered his body.

"Good girl! This innate evil qi is so strong, even the mountains can be corroded..."

At that moment just now, let Feng Zichen be sure that the mountains of Buzhou Mountain here have been completely transformed into evil stones and become the carrier of innate evil qi.

Buzhou Mountain, as the backbone of Pangu. Even if it is not as good as before, its Great Dao Divine Power is still there, and it is not something that the Golden Immortal can destroy. Only Taiyi Golden Immortal can leave traces on Buzhou Mountain.

A mountain like the valley here is such a large area, and it takes a lot of effort to destroy it.

The fact that this innate evil qi can erode it to such an extent shows its power.

Just when Feng Zichen sighed, Hongmeng Dao Yin paused, lit up slightly, and urged him to rush to the depths of the valley.

"In the depths of Buzhou Mountain, what treasures are there that attract Hongmeng Daoyin like this?"

Since he set foot on Buzhou Mountain, Hongmeng Daoyin has been extremely active, frequently urging him to go to the depths of Buzhou Mountain. Such an eager appearance is completely different from the previous cold posture, and Feng Zichen can't help but be curious.

Immediately, Feng Zichen let go of the suppression of the Hongmeng Dao Seal and let it fly to the depths of the valley, while he set off to follow.

He wanted to see what kind of treasure it was, causing Hongmeng Daoyin to be so impatient.

The area of the valley is even larger than Feng Zichen thought. I thought that I had walked so far with the innate evil qi just now, and I was already close to the depths of the valley. Unexpectedly, it was just a circle on the periphery.

A few days later, Feng Zichen finally came to the deepest part of the valley, where a cliff was.

At the bottom of the cliff, a deep hole was revealed, from which a thick stream of innate evil qi gushed out.

Huge fissures start from the mouth of the cave and spread in all directions, covering most of the valley. Wisps of innate evil qi rose out of it.

This is the deepest part of the valley, and it is also the source of the innate evil qi in the valley.

Looking at the innate evil qi that had almost turned into liquid, Feng Zichen stood at the entrance of the cave and hesitated for a moment. In the end, under the constant urging of Hongmeng Daoyin, he gritted his teeth and rushed in.

The Hongmeng Dao Seal is his natal magic weapon, and it will never harm him. Since you dare to let him rush in, it will ensure his safety.

Sure enough, the Hongmeng Dao Seal swayed with a layer of water wave-like light, turning Feng Zichen into the shape of nothingness and passing through the innate evil qi. Fly deeper into the cave.

One year, two years, three years, ten years......

The length of the cave was beyond Feng Zichen's imagination, and it wasn't until more than a hundred years later that he saw a ray of bright light.

At the first glance of this light, the thirteen heaven-opening axe lights in the depths of Feng Zichen's memory suddenly trembled. It seems to be stepping out of the past and into the present.