After crossing over, he has no taboos among the zombies.

A dark demonic flame condensed on Qin He's fingertips. The flames danced, gradually dispelling the last trace of chaos in his eyes.

Although he had hastily become a demon, and had acquired a powerful demonic energy, it was mixed with too many violent impurities from the depths of the demon abyss. Even the outer demonic shell would produce faint fluctuations from time to time, showing signs of instability.

He knew clearly that if he tried to practice the Heaven-Devouring Demon Art with such a mixed foundation, not only would he not be able to make any progress, but he would also be likely to suffer backlash from the art and fall into an irretrievable doom.

"Boom!"

Without hesitation, Qin He slammed his palm towards the cave's exit. Huge rocks crumbled, smoke and dust filled the air, and the passageway, stretching over a hundred miles, collapsed, completely blocking the way in. Even if the enemy attacked forcefully, he would have enough time to respond.

"Disperse!"

Then, his mind sank, and the demonic energy surging in his dantian suddenly stopped, and then rushed out like a receding tide, carrying with it wisps of black murderous energy, and forcibly peeled off along the meridians.

Wherever the demonic energy passed, frost coated the gravel on the ground, and the surrounding temperature plummeted. Qin He's brow showed no trace of pain, as he concentrated his attention on completely expelling every last bit of filth.

This separation lasted for three full days.

The pressure from the Divine Bridge Realm collapsed first, and the magical energy from the Dao Palace Realm dissipated with it. When his aura fell to the Wheel Sea Realm, he paused and carefully explored his meridians. The turbidity had mostly disappeared, but a subtle darkness still remained deep in his dantian.

Without hesitation, he continued to draw the energy of the Wheel Sea Demon out of his body.

Another day passed, and the breath finally fell into the spring.

The magic energy flowing through his meridians was already clear, but Qin He was still not satisfied. He sought more than just "cleanliness," but ultimate "purity."

The devilish flame flickered at his fingertips, and he dispersed the foundation of the Yongquan Realm as well, until his Dantian was empty and his breath was as weak as that of a mortal who had just entered the Tao.

At this point, the practice of dispersing the power is completed.

On the road to reconstruction that followed, he walked much more steadily than ever before.

He sat cross-legged, forming the starting hand seal of "Demon Swallowing Heaven Art" with his hands.

"Om~"

The moment the technique was put into practice, a strange suction force emerged from deep within the Dantian.

A palm-sized black vortex slowly took shape, with fine magic patterns lingering around the edge. It made a "crunching" sound when it rotated, like a suspended miniature magic cloud millstone.

This is the core foundation of "Devouring the Heavens Demonic Art".

When the millstone first appeared, the surrounding evil spirits seemed to be summoned and turned into a black tide that surged towards them.

It is mixed with viciousness, evil spirits, miasma, and corpse spirits, but once sucked into the millstone, it will be instantly crushed by the high-speed rotating vortex.

With a light "crackling" sound, all the impurities collapsed and turned into pure magic energy as clear as ink, which was injected into the dantian from the vortex of the millstone.

As the demonic energy gradually increased, the millstone grew slightly larger, from the size of a palm to the size of a bowl.

The originally empty Dantian also quietly expanded, producing a hazy black mist, as if the outline of the underworld was hidden in it.

The foundation of the True Essence Realm took shape instantly under the nourishment of the Demonic Essence.

It only takes half a day from the initial stage to the peak.

Qin He spent three days to keep the millstone running.

He wanted the magic power to be crushed repeatedly and began the sea of ​​​​suffering of the devil.

Meanwhile, the millstone had grown to the size of a washbasin, and the space in his dantian had expanded several times. Tiny magic crystal particles faintly emerged from the black mist, and a strange phenomenon began to take shape.

After his foundation was completely solid, he activated his demonic energy and attacked the Yongquan realm.

At the moment of breaking through, a strange phenomenon suddenly occurred.

The Demonic Cloud Grindstone in the Dantian suddenly accelerated, and the suction force increased several times, actually directly pulling the demonic energy from deep in the cave back into it.

The Sea of ​​Bitterness expanded rapidly, and ninety-nine pitch-black magic springs gushed out from the bottom of the Sea of ​​Bitterness one after another. They were as thick as arms, and the rushing magic energy was all tempered by the millstone thousands of times.

What’s even more amazing is that as the magic spring erupts, the Dantian space is also expanding rapidly.

The black fog grew thicker, and at its edges, tiny blue ghost lights appeared, swaying in the wind.

The millstone has grown to the size of a round table, and the magic patterns have become more and more complex, making it faster at grinding the impurities.

Qin He calmly guided the magic spring to cleanse his limbs and bones.

After seven full days, his foundation in the Yongquan realm was finally perfected. By this time, his dantian had become like a small netherworld, filled with black mist, flickering ghostly lights, and a millstone hanging in the center, its might beginning to take shape.

When practicing in the Wheel Sea Realm, the changes in the millstone and dantian are even more significant.

Qin He activated his skills, increasing the speed of the millstone. The outer layer of magic cloud surged, forming an outward-rotating magic vortex about ten feet in size outside his dantian, which fiercely sucked in the external magic energy.

The spring is as thick as a pillar, rushing up to the sky and gradually condensing into crystal clear black jade.

The space in his dantian expanded dozens of times. The shadow of a jagged demonic bone emerged from the black mist, and dark blue ghostly fire gathered into a flaming butterfly, dancing above the sea of ​​suffering. The image of the underworld became increasingly clear.

He spent ten days polishing it until the ninety-nine spring pillars emitted glazed light, and then he launched an attack on the Dao Palace realm.