"Sure enough, it's a medium-grade spirit stone!"

Chu Tiance exclaimed in his heart, his handprint changed rapidly, and every drop of essence blood flashed with the brilliance of the thunder fire rune.

The second-grade consummate beast core and the Xuan-rank middle-grade elixir contain extremely terrifying power, although the sword king's blood flame temperature is extremely high, the quality is excellent, and it can be refined, but it takes a relatively long time, and it is not at all like refining the second-grade late-stage beast core in one fell swoop. However, now, the Thunder Spirit Stone Essence Yuan was surging, but it was like a fire cooking oil, and the Blood Flame of the Sword King suddenly became ten times more intense!

The bloodline of the Dark Sword King seemed to have eaten a great tonic elixir, and it didn't need to be urged at all, and it was crazy to stir.

The refining speed of the second-grade consummate beast core and the middle-grade fire attribute elixir of the Xuan rank was almost shortened by ninety, and all of them were refined in a moment.

Under normal circumstances, refining spirit stones do not need to be swallowed at all, they only need to be held in the palm of their hands or placed in front of them.

However, the essence aura contained in this thunder mid-grade spirit stone was too pure and too violent, and with Chu Tiance's current realm, no matter whether it was held in his palm or placed in front of him, he could not truly refine the essence in it.

Only by swallowing it directly into the abdomen, with the help of the domineering power of the Dark Sword King's bloodline, and repeatedly refining, can it be truly refined.

The thunder roared, the flames boiled, and the two forces surged vertically and horizontally, constantly refining Chu Tiance's body.

Different from the Spirit Array Pavilion's Thunder Fire Array, this time the power was more fierce and more crazy, and more importantly, this time it was from the inside out.

The domineering essence was constantly raging in Chu Tiance's body, and the muscles, bones, skins, meridians, and limbs began to tremble at the same time.

Thunder slashed and burned, ten thousand blades pierced the heart, Chu Tiance spurted out a mouthful of blood, but his breath was crazy and high-spirited.

Medium-grade spirit stones, even those in the Xuandan Realm or even the Shengang Realm, are rarely directly refined.

Although Chu Tiance had refined a large number of Xuan-rank elixirs and second-grade beast cores to assist in refining, for a while, he still felt that his body was almost collapsing.

"Thunder Fire Forging Body, my heart will not be extinguished!"

With a low roar, Chu Tiance's heart was like a rock, his mind was like steel, and the bloodline of the Dark Sword King and the Heavenly Demon True Scripture were running at the same time.

The thunder fire rune gradually flickered in every drop of essence blood and every inch of muscles and bones, and the wild and domineering power gradually poured into the muscles, bones, skin, membranes, limbs, and hundreds of bones, and the incomparably powerful coercion gradually began to diffuse. It's just that with the continuous tempering, Chu Tiance's trembling body gradually oozed a large amount of blood, and in just one hour, the whole person almost completely turned into a bloody person, and his clothes were completely stained!

"No, if it goes on like this, it won't last long!"

Chu Tiance's eyes were stained with blood, he could barely open his eyes, the handprints on his hands changed, and his aura suddenly became majestic and demonic.

The power of the spirit stone in the thunder was too terrifying, and Chu Tiance's meridians were gradually unable to bear it.

If it continues, the meridians and acupoints will collapse, and even the origin will be destroyed, and there will be only one dead end.

For today's plan, there is only one way, and that is to impact the six layers of the Yuanfu.

Once advanced, both the strength and width of the meridians and points will be greatly improved, and the strength of the body can also be raised.

The Heavenly Demon True Scripture was running at full strength, Chu Tiance's eyes were slightly closed, and the demonic and noble aura gradually became ethereal.

The Thunder Fire Rune continued to flicker, and the Thunder Fire Forging Body Skill was running almost perfectly under the urging of the Dark Sword King's bloodline. Every moment, Chu Tiance's body was constantly improving under the tempering of the thunder true fire, but at this time, Chu Tiance had completely left all this behind, and the unbearable severe pain and the continuous promotion of his physical strength seemed to have nothing to do with Chu Tiance at this moment.

The true yuan is rolling and flowing, like the Yangtze River, constantly whistling.

At this time, among the meridians of Chu Tiance, there were twelve second-grade consummate fire attribute beast cores and three Xuan-rank mid-grade fire attribute elixirs, which were simply abundant and heavy to the extreme. The Heavenly Demon True Scripture operated slightly, and this surging power was under the coercion of the True Yuan, frantically impacting one trick after another, quickly filling the dantian qi sea to the limit.

From the fifth to the sixth of the Yuan Mansion, the key is to consolidate the Yuan Mansion and continuously strengthen it to make it more and more tenacious and broad.

As long as the Yuan Mansion reaches the limit, it can truly stir up the True Yuan Vortex and prepare for the introduction of the essence of heaven and earth and the condensation of Xuandan.

The Heavenly Demon True Yuan was like a heavy hammer, constantly beating Chu Tiance's Yuan Mansion.

Although the bloodline of the Dark Sword King endowed Chu Tiance with a physique that was biased towards the fire attribute, the power of the Thunder Spirit Stone was like the heaviest sledgehammer and the sharpest blade, such as cutting and grinding, constantly forging Chu Tiance's Yuan Mansion. In just a few moments, Chu Tiance's Yuan Mansion expanded several times, and a proud but calm aura gradually condensed.

The brilliance of thunder and fire continued to flicker on the surface of Chu Tiance's body, and the breath he exhaled seemed to be stirring hot thunder.

About an hour later, Chu Tiance suddenly opened his eyes, and two domineering rays of light suddenly exploded.

The Dantian Yuan Mansion shook suddenly, and immediately seemed to shatter the tough barrier, and quickly began to expand.

The Infinite Essence Yuan aura quickly turned into a rolling true element, continuously infused into the Yuan Mansion.

The intense pain and the meridian points that almost exploded were mostly wiped out in an instant.

Almost at the same time, the Thunder Fire Forging Body Skill, which had reached the fivefold limit, naturally improved his physique as Chu Tiance was promoted to the sixth level of the Yuan Mansion, and he made further progress in an instant, breaking through the bottleneck in an instant. The thunder fire rune on his chest was brilliant, and the scorching light shone like day in almost the entire quiet room, and an incomparably strong force suddenly roared from the deepest part of his body!

Thunder Fire Forging Body Skill Sixfold!

Strong, tenacious, domineering!

All of a sudden, not only in the essence and blood, but even the muscles and bones and skin membranes faintly began to carve the thunder fire rune pattern.

The essence of the Thunder Spirit Stone was mixed with the power of the Fire Attribute Beast Core and the Xuan-rank Elixir, refining Chu Tiance's body more and more violently, but compared to before, the severe pain that was almost unbearable was obviously flattened with the substantial increase in the strength of the body. The mystery of the Thunder Fire Forging Body Skill slowly flowed in the muscles and bones, and a high-spirited and domineering determination gradually rose, gradually merging with the blood.

The terrifying power of the Dark Sword King's bloodline was faintly tainted with a trace of thunderous power.

Five hours passed, and there was silence in the quiet room, and it was noon outside the window.

Chu Tiance's eyebrows were abrupt, and a sharp thunderous sound erupted in the meridians, and the whole person was suddenly shocked.

"How can the essence aura of this Thunder Spirit Stone be so abundant, the six second-grade consummation beast cores and the three Xuan-rank mid-grade elixirs have all been refined, and even half of the Thunder Spirit Stone can't be completely refined, and even half of the power of it has not been consumed!"