In the blink of an eye, twenty days passed.

On this day, in the sky above the Taiyin Cave, suddenly the yin wind was loud, whistling, and then the huge forbidden Yin Qi on the top of the cave came out, condensing pieces of gray clouds.

The next moment, accompanied by a roar of mountains that resounded through the sky, a lifelike black dragon and a giant tiger with black mist rose from the Taiyin Cave and began to circle and stagger, and the sound of dragons and tigers roaring was endless.

Above the Yin Cave where Liu Ming was, strange gray spirit pattern frenzy suddenly appeared in the void, and after a few flashes, it trembled violently, and a large amount of Yin and Cold Qi actually gathered here, and gradually formed a huge vortex at the top of the cave.

In the void around the whirlpool, the space was visibly distorted, and then a spiritual pressure no less than the crystallization realm followed the dragon and tiger, soaring into the sky, and submerged in the whirlpool.

There was a loud "boom".

The whirlpool where the yin qi gathered was slightly condensed, and it collapsed in an instant, and the Dao yin qi flew towards the surroundings.

After a long time of tea, a qiē gradually regained its calm.

Although each Yin Cave had a partition prohibition, some disciples who were cultivating in the nearby Yin Cave still felt the violent fluctuations of the Yin Qi in the cave one after another.

At the same time, in the stone room of the Taiyin Cave, the eyes of the yellow-robed old man sitting in front of the blue magic circle opened slightly.

"It's just that it breaks through a late stage of condensation, and the movement is so big, although this Dragon and Tiger Hell Skill is a bit coarse, and the cultivation method is not in the eyes of some people, but it is not a superior exercise, the last time such a vision appeared, I don't know how many years ago. I don't know if it was the inner disciple of that mountain that made this breakthrough. The old man said to himself, and closed his eyes with a calm face.

At this time. In the Yin Qi Cave where Liu Ming was, it was filled with a soaring black mist. The black dragon and tiger fought between the rolling mist.

Liu Ming's eyes suddenly opened, his hands were combined, and the dragon and tiger turned into a thick black qi by the black mist around him, and he hovered and submerged into his heavenly spirit cover.

"Congratulations... Master... Breakthrough... Break... Later stage of condensation. At that moment, the sound of the girl stammering was heard.

After Liu Ming smiled at the corner where the bone scorpion was, he stood up, stretched his hands, and immediately there was a burst of firecrackers from the bones of his body.

He clenched his fist harder, and his arm instantly exploded. The black spirit patterns on his skin loomed, and after suddenly turning around, he punched the boulder without saying a word.

"Bang".

The boulder shattered inch by inch in response, and the flying stones shot in all directions.

Liu Ming took a deep breath, a satisfied expression flashed on his face, and this blow only used a little force.

He pointed lightly at the stone wall a few feet away with one hand, and a black mist on his fingertips instantly condensed, shooting towards the stone wall.

The next moment, there was a fluctuation in the void in front of the stone wall. A hole in the surface of the stone wall appeared a foot-wide hole, and gray rock powder was suddenly scattered all over the ground.

Liu Ming pointed at the stone wall again and again before he stopped with a satisfied face.

At this time, even if the Tongmai Spirit Rune had lost its effect, the muscles and veins in the body had been slightly strengthened compared to before. With a slight urge, the mana in the eight veins of the Qi Sutra is surging like a stream, in this case. The power of the Urging Exercise Secret Technique can also be increased by a point out of thin air.

And the mana in his spiritual sea was almost condensed into a gelatinous change, and the mana was so strong that Cheng Dù should have approached the early stage of crystallization. The mana is more than doubled, and it is more than enough to deal with the next mysterious bubble absorption.

And the mana increased dramatically. Under the action of the Dark Bone, its physical strength increased by three points out of thin air compared to before the advancement.

In this way, he asked himself that this body was not only comparable to ordinary crystallization cultivators, but also that even crystallization refiners who specialized in physical cultivation were not inferior in the slightest.

And now that it had only been more than twenty days since he entered the Yin Qi Acupoint, he still had more than ten days to consolidate his realm with peace of mind.

He threw the two high-level soul cultivation bags and the other leather bag on his waist to the ground, and pinched the magic trick and pointed at it lightly, and after the pattern on the three spirit bags flashed slightly, he continued to absorb the nearby yin qi.

At this moment, he has already broken through the late stage realm, so he can naturally have no scruples about the rich Cheng dù of the yin qi here, and replenish the soul nourishing bag with confidence.

After a few more words of communication with the bone scorpion, he crossed his knees again, ready to consolidate the realm.

After his eyes closed, the light in the sea of divine consciousness flashed, and a pitch-black book entangled in black qi appeared, which was the Dragon and Tiger Hell Skill!

These days, he has been carefully figuring out the exercises of the third layer in the book, and according to the description above, breaking through to the late stage of condensation, it is logical for the Dragon and Tiger Hell Skill to cultivate the third layer.

The trick of the third layer is quite mysterious, and he has only just figured out a clue, and it seems that it will take a long time to understand it thoroughly.

Thinking of this, Liu Ming's heart moved, and the classics in the sea of divine consciousness began to flip page by page.

Time flickered, and a few more days passed.

On this day, Liu Ming was using the divine power of one heart and two purposes, while regulating the mana in the body and consolidating the realm, and at the same time, the spiritual power was carefully comprehending the third layer of the Dragon and Tiger Hell Gong.

Suddenly, a buzzing sound came from a leather bag thrown on the ground!

Liu Ming opened his eyes in surprise, stopped his cultivation, and looked at the leather bag with his gaze.

This bag looks like the one that contains the Devil's Flying Skull!

Since devouring the crystals and bones in the skulls of many trolls, the flying skull has been sleeping in the leather bag until now, and has never shown any signs of waking up.

After the bone scorpion woke up, its strength has improved greatly, and it has also evolved new supernatural powers, which naturally makes Liu Ming look forward to the advancement of the demon even more.

After a moment's thought, he waved his hand and struck out a trick that landed on the leather bag.

I saw a cloud of black gas as black as ink coming out of the leather bag, and there was a burst of rattling laughter in the tumbling, and then the black gas dripped, and then the true body of the flying skull appeared.

After sleeping in the leather bag for so long, the green hair on the flying skull was more bright and dazzling, and the small white heads on both sides of the head had also increased slightly, and a layer of gray and black color appeared, and the black qi on the surface of the body was a little thicker than before.

But what made Liu Ming a little disappointed was that the aura of this flying skull had not increased much, and it seemed that it was still in the middle stage of condensation.

As soon as his mind moved, he immediately wanted to use the power of his divine sense to communicate with this demon.

Who knows, the flying skull didn't seem to pay attention to Liu Ming's divine thoughts, but after taking a deep breath, a greedy look appeared in the fiery red demon pupils, and after taking another big mouth, he actually began to greedily devour the surrounding yin qi.

The other two smaller white bone skulls also let out a strange cry of excitement, and they did the same with their mouths open.

After a few breaths, a whirlpool soon appeared around it, and the yin qi in the poured into its mouth from all directions.

Seeing this, Liu Ming's eyes flashed slightly, and he didn't make a stop move, just watched quietly from the sidelines.

"Squeak ......" screamed, and the bone scorpion lay at Liu Ming's feet at some point.

"The host...... It happened...... What ......" The bone scorpion raised the giant turtle and squeaked twice at the Yin Qi Vortex, as if it was very dissatisfied with the Yin Qi that it had swept away from the cave.

"It's okay, it's a flying skull absorbing yin qi. Liu Ming soothed the bone scorpion and chuckled.

Whether it is a bone scorpion or a nine-infant flying skull, the pure yin qi here is beneficial and harmless to them, and the more the better.

He could clearly feel that after the flying skull devoured the yin qi here, his own aura instantly became powerful at a lightning speed.

After half an hour, the Demon Flying Skull stopped devouring unsatisfactorily.

At this moment, in this Yin Qi Cave, the originally rich Yin Qi actually became a little thinner, and some places in the cave that were originally covered by black Qi also became clear, revealing large black stone walls.

These black stones are Yin Yuan Stones, which can continuously absorb the power of the Yin and evil forces underground, producing pure Yin Qi, but now the Yin Qi here has been almost swept away, and the Yin Acupoint here will only return to its original state after a few months.

At this moment, the black gas around the flying skull was steaming, a little richer than before, and the aura was also strengthened a lot, faintly reaching the appearance of the late stage of condensation.

"Click"

The sound of bones rubbing came out of the black air, and the flying skull continued to emit a piercing sound like the friction of gold and stone, as if it was wailing in pain.

The bone scorpion on the side moved its body slightly uneasily, and squeaked and whispered.

Liu Ming frowned slightly, and released his divine sense again, and at this time he was finally able to contact the Nine Infant Flying Skull, and from the feedback he received, it turned out that although it had devoured a lot of troll bones and blood before, it lacked the nourishment of Yin Qi, so it had not been able to advance.

After waking up this time, he absorbed so much yin qi again, and finally began to mutate.

As the black air mass surrounding the flying skull tumbled violently, purple rays suddenly burst out from the black air.

After this lasted for half an hour, the purple rays intertwined with each other, and suddenly formed a purple light curtain to envelop the flying skull.

In the light curtain, the black qi tumbled more and more violently, and suddenly spun up, and was sucked in by the flying skull.

At this moment, the flying skull has begun to change!

The small heads on both sides of the flying skull shook suddenly, and after a burst of green runes on the surface flashed, they gradually turned into pure black, and a faint green light appeared in the eye socket of the black hole.

Then, in the strange screams of the three heads at the same time, next to the small heads on both sides, the skin and flesh squirmed for a while, and then three bulging meat bags were bulged out of each other, as if something was about to break out of the shell, making the flying skull look extremely hideous.

However, after these bulges only changed to the size of the bowl, they stopped abruptly.

After the three heads of the flying skull twisted each other and looked at themselves a few times, then they showed a satisfied look at the same time, and after one circled, they landed in the void close in front of Liu Ming, and let out a flattering cry.

Liu Ming's face showed a hint of surprise, and he touched the head in the middle of the flying skull with one hand, and instantly remembered the legend about the evolution of the flying skull to the Nine Babies that he had seen in the classics of the Barbarian Ghost Sect before.

The current flying skull has transformed into the realm of the six-rank demon head, and the breath has also reached the late stage of condensation, and the appearance has even taken on the appearance of the nine babies recorded in the classics. (To be continued......)