Mu Fei quickly thought of gathering qi to disperse. A second-grade pill that can increase the success rate of condensation gas vortex.

"Is it only possible to use pills?"

Mu Fei stared at the black rock that looked like a huge ice cube not far ahead, and after pondering for a moment, he suddenly clenched his fists and whispered, "It seems that the preparation is still insufficient." Now that there is no elixir, then hurry up and explore this cold place, and then return to the Dan Courtyard to condense this black qi vortex again. ”

Mu Fei slowly got up, and then walked towards the boulder.

It became more and more difficult to breathe, and a trace of ruthlessness flashed in Mu Fei's eyes, and he immediately triggered the ten absolute poisons in his body.

He actually applied the 'extinction' of the ten absolute poisons to his own body.

Since he couldn't breathe, he simply stopped breathing for the time being, so Mu Fei walked like a fly, and soon came to the bottom of the boulder.

The black river came slowly, flooding the boulders every ten breaths.

Mu Fei could faintly sense the horror of the black river, so he could only jump on the boulder, and then jump up again, jumping to another boulder at the foot of the mountain, just avoiding the river.

Mu Fei observed the bottom of the rock very carefully and carefully, barely missing any details.

Finally, a quarter of an hour later, Mu Fei discovered the secret beneath the boulder.

There is an extremely hidden Dao pattern array engraved underneath. But perhaps due to the erosion of time, this great array has been broken, and the power of the Dao array is obviously weakening day by day.

And it was precisely because of the incomplete Dao Pattern Great Array that the bone-devouring cold qi at the bottom of this boulder could slowly diffuse out.

Mu Fei didn't know how to break the formation, so he didn't dare to forcibly break it with the Dao Technique of Shaking like the last time he broke Su Da Meiniu's Dao Pattern Array. He could deduce that if the formation was forcibly broken, it would most likely cause the black river to flood into it. If that happens, it won't be good.

It looks like it's going to be fruitless. The extermination of the ten absolute poisons will not last too long.

"Huh?" Mu Fei, who was about to retreat, suddenly brightened his eyes and let out a loud cry after carefully observing the broken Dao Pattern Array again.

"Is this...?" Mu Fei's powerful mutated soul perception instantly poured out, covering the Great Array of Patterns.

After carefully staring at it several times, Mu Fei confirmed that it was correct, and suddenly his palm moved, and a somewhat broken parchment scroll immediately appeared in his hand.

Mu Fei found that the lines of this large array were mixed with many patterns that were quite similar to those on the bluestone square platform and the black stone square platform. That is, it is very similar to the strange runes on the broken parchment scroll left to him by his mother.

Mu Fei was going to compare them one by one, accurately record the patterns of the Dao Pattern Great Array at the bottom of this huge rock, and then return to the Five Elements Academy to study and study the method of breaking the formation.

He opened the parchment scroll casually, and it was then that a change of urgency occurred.

I saw a dark light suddenly rush out from the parchment scroll, and it shot directly at the Dao Pattern Great Array in the Giant Rock Land.

Suddenly, the rock rumbled like a huge block of ice, and then slowly shifted, revealing an entrance that shone with a strange black halo and was about a long and wide entrance.

At this time, the black river flooded again.

However, Mu Fei saw that the black river water flowed from the strange black halo and did not leak into the entrance below.

He looked at the black parchment scroll in his hand in shock, and suddenly remembered that the moment he almost couldn't help but step into that strange door before, it was from this scroll that a dark light rushed out of it and entered the soul sea, which made him wake up immediately.

The shock was followed by an irrepressible frenzy.

It seems that the broken parchment scroll that my mother left to her is by no means ordinary. There must be a great secret hidden in this parchment. If you can crack this secret, you may be able to find clues about your mother's parents.

With great excitement, Mu Fei put away the parchment scroll and immediately jumped down from the rock, through the entrance of the black halo, and entered the cold place.

I can finally breathe again. Mu Fei gasped for breath and greedily breathed in the air, which was extremely cold but very fresh.

In front of him, there were no endless icebergs or ice and snow as he expected. On the contrary, the land in front of me is very small, like an ordinary underground karst cave. Except for the cold aura that permeates the bones, there doesn't seem to be anything special.

Mu Fei recalled the records in the collection and gradually came to his senses. The land of extreme yin does not mean that it is a land of extreme cold. Although yin and cold often go hand in hand, they are still fundamentally different.

Observing the induction carefully, Mu Fei found that the cold qi was faintly emanating from the front. So I walked a few steps, bypassed the complex cave terrain, and came to the stone wall in front of me.

There was a windy hole in the stone wall.

The cold breath is constantly blowing out from within.

The entrance of the dark cave looks like a strange beast is devouring a huge mouth, which is terrifying.

Mu Fei thought for a moment and resolutely stepped into the cave.

The yin wind like a knife cut suddenly came to his face, and Mu Fei immediately let out the Five Elements Yan Hell Dao Fire, and then rushed all the way, and after stepping out of dozens of zhang, his body suddenly suspended in the air and fell rapidly.

Suddenly there was a light in front of me, like daylight.

This place has always been black, accustomed to seeing black Mu Fei, suddenly saw the day, and suddenly felt slightly dazzling.

After closing his eyes, constantly repulsing, and adjusting his body to land smoothly, Mu Fei opened his eyes again.

"Is this...?" Mu Fei was stunned.

Nine dangerous peaks and strange rocks on all sides are like sharp swords that go straight into the sky. The sky above was still black, gray with no end in sight.

Directly in front of it was a nine-story broken tower, slanted into a huge sunken bluestone.

The bluestone is suspended in the air, and the nine surrounding swords, like sword dangerous peaks, stretch out countless black iron chains, passing through the nine-story broken tower, criss-crossing, and it seems that the nine-story broken tower is firmly locked on the bluestone. On top of each chain, there is a very cold air.

Beneath the sunken bluestone were nine stone steps, each with a rusty remnant of the sword.

What made Mu Fei feel the most strange was that the nine-story leaning tower, which seemed to be lit up, emitted a light like day. This place is as bright as day, and it is precisely because of the light inside the tower.

The nine-story leaning tower exuded a terrifying extremely cold air, and the black iron chains that passed through the leaning tower seemed to be absorbing the extremely cold air inside.

Mu Fei immediately judged that the depression where the nine-story leaning tower was located was a 'place of extreme yin'.

And to enter the place of extreme yin, you have to go down from the nine-step stone platform and the first step into the leaning tower. These nine stone steps are the only passage.

Since entering this place, the vitality of the fire qi vortex in Mu Fei's body has also begun to deplete at an alarming rate.

Is it to advance or retreat? Mu Fei thought quickly.

It has been three months since I entered this mysterious dark place. If you retreat and return to the Five Elements Courtyard, it will be nearly a month earlier than the original plan.

But the peerless treasures that are very likely to appear in front of you, or even the natural Dao fire, must be abandoned. And next time I come here, whether I can enter this place is another matter.

But if you enter the nine-story leaning tower, the unknown danger is unpredictable.

"No, you have to go in. "Even if you don't have any peerless treasures, you can't let go of finding any clues related to your mother's parents.

Thinking of this, Mu Fei immediately strengthened his inner thoughts and resolutely stepped onto the first stone platform.