is Foundation Establishment Pill, he hadn't even seen the threshold of Foundation Establishment, let alone breaking through. It seemed that even if he gritted his teeth and took another one, there wou...Put the other two soul-drawing grass leaves back in storage.

Then, Qin Sang channeled a strand of spiritual energy to envelop the leaf while simultaneously activating the secret technique.

Streams of spiritual energy flowed like rivers, converging before Qin Sang and forming countless mysterious runes. The radiance of the spiritual energy illuminated the cave with a brilliant glow.

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Finally, these runes came together as one, in the very center of the spiritual energy, a faint dark light suddenly appeared.

Upon closer inspection, it turned out to be a cluster of flames.

The flame grew gradually, expanding into a fist-sized inferno. The runes seemed to transform into a furnace, and Qin Sang's spiritual energy served as the fuel.

The flames remained a dark black, burning before Qin Sang. But he not only felt no heat, but rather a chill emanating from the flames.

This is a kind of secret method used to conjure Yin Fire, specifically for refining the Heavenly Corpse Talisman.

The activation of Yin Fire consumes spiritual energy quickly, but Qin Sang is already a cultivator at the mid-stage of Foundation Establishment, so the pressure isn't great. There's no need to worry about running out of spiritual energy halfway through the refining process.

He looked at the Yin fire, then at the Soul-Summoning Grass. After a moment of contemplation, he didn't rush to throw the Soul-Summoning Grass in, but instead focused on manipulating the Yin fire.

Under Qin Sang's control, the circular flames began to change, sometimes stretching and sometimes being compressed.

At the beginning, the changes were slow. Qin Sang's brow furrowed slightly, feeling a bit strained. Gradually, the changes became faster and faster, transforming into birds and beasts, vivid and lifelike. Meanwhile, Qin Sang's expression became more relaxed.

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"Go!"

Qin Sang reached out and drew the Soul-Calling Grass into the Yin Fire.

>

The Yin fire suddenly swelled, completely enveloping the Soul-Drawing Herb. Clusters of tiny flames began to burn on the Soul-Drawing Herb.

In the blink of an eye, an hour had passed. The soul-fetching grass remained quietly in the yin fire, except that its surface gloss had dimmed slightly; otherwise, there seemed to be no change whatsoever.

Qin Sang's face showed no signs of anxiety.

At this moment, he closed his eyes tightly and sat cross-legged on the wooden bed, focusing all his mind and body on the flames before him, with nothing else in his thoughts.

With the passage of time, the first crack finally appeared on the soul-attracting grass. Then, the cracks began to increase, becoming densely packed, as if they were about to shatter at the slightest touch.

In fact, the soul-drawing grass shattered on its own without anyone touching it.

A more precise description would be that it melted, becoming a pool of black spirit liquid.

The Soul-Treading Grass has finally been refined by the Yin Fire!

Qin Sang secretly let out a breath, but he still couldn't relax. Refining the Soul-drawing Grass was just the beginning; afterward, he had to refine the impurities in the Soul-drawing Grass and leave only the essence!

Under the scorching heat of the yin fire, the volume of the spirit liquid gradually decreased. It had originally been the size of an infant's fist, but now it was reduced to a single drop, its color becoming increasingly profound.

Like ink.

From the beginning to now, this process has lasted for a whole three days and is finally complete!

The impurities of the soul grass have been refined away, but its veins are still intact. This is crucial for the later refining of the Heavenly Corpse Talisman. This step requires a high standard of the refiner. Not only does it need enough patience, but it also requires extremely precise control. A single oversight could lead to failure.

Withdrawing the Yin fire, Qin Sang opened his eyes and looked at the drop of spirit liquid. His eyes held a trace of fatigue, but more importantly, excitement. He never expected that in his first attempt to refine the Heavenly Corpse Talisman, the most difficult step would be successful.

After a short rest, waiting for his Qi sea to recover somewhat, Qin Sang continued refining without stopping.

The spiritual liquid hovered before Qin Sang, his face slightly grim. Discarding extraneous thoughts, he raised both hands and formed various hand seals, his fingers dancing faster and faster, leaving trails of afterimages that blurred the vision.

As his handprints changed, countless mysterious runes were born, and then immediately beaten into the spiritual liquid.

>

The spirit liquid seemed to come alive, wriggling constantly. It began to fade from black, its color growing lighter and lighter, while its shape became more and more regular...

Finally, a rectangular celestial corpse talisman is about to be complete!

But, it's not over yet.

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Qin Sang's movements were non-stop, while also multitasking. He split a strand of his soul from his primordial spirit and quickly condensed it into a soul mark, embedding it into the Heavenly Corpse Talisman.

It's done!

Qin Sang let out a long breath, his complexion slightly pale. Most of the spiritual power in his dantian had been consumed, which showed that refining the Heaven Corpse Talisman was indeed not easy.

The Heaven Corpse Talisman was no longer black, but rather translucent gray.

As thin as a piece of paper, as gray as jade, only the size of a thumb, it emanates an enigmatic aura, with mysterious brilliance flowing according to some pattern.

Like a galaxy in the night sky, it appears and disappears, enchanting the heart.

Qin Sang held the light as a feather Heavenly Corpse Talisman in his palm, examining it carefully.

At first glance, the Sky Corpse Talisman appears beautiful, but in reality, it is a supremely sinister and evil artifact used to create living corpses!

This contrast also made Qin Sang feel a sense of awe.

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Qin Sang didn't rush to refine the zombies. Instead, he took out a jade box and sealed the first Heaven Corpse Talisman inside. He planned to strike while the iron was hot and continue refining.

"It doesn't seem too difficult..."

Qin Sang muttered to himself, giving himself a moment to relax.

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But before he could savor his success, a harsh lesson awaited him. The second Heavenly Corpse Talisman failed in its refinement.

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Of course, the reason for failure was not Qin Sang's overconfidence, but a careless oversight.

Failure is actually normal. The difficulty of refining the Heaven Corpse Talisman is very high. Qin Sang's success in one go can only be said to be lucky.

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Qin Sang knew this truth and was not disheartened. He waved his hand, obliterating the remnants of the soul-drawing grass, summed up the experience of failure, and continued to refine the third one.

Three days later, another Heavenly Corpse Talisman was successfully refined!

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With a soul-attracting herb and two celestial corpse talismans forged, Qin Sang was already very satisfied. After these three refinements, he had gained enough experience and believed that the success rate for future attempts would be even higher.

It took a full eight days just to refine the Heavenly Corpse Talisman.

Calculating the time, Yun Youzi was estimated to be arriving soon, so Qin Sang did not continue. Instead, he took out a live corpse embryo prepared beforehand from the corpse puppet bag.

According to him, there is a big difference between zombies and vengeful spirits. Requiring the Heaven Corpse Talisman is just one aspect of it.

Since the qihai of a zombie is intact and not depleted, more quantities of five element yin objects and earth evil qi are needed when establishing the foundation in five elements.

The exact amount will vary depending on the specific circumstances, but it will be at least several times the number of corpses refined.

Although the five-element yin objects are expensive, they are not difficult to obtain. Qin Sang has made ample preparations.

But the evil spirits were dwindling.

The earth-shaker's qi is the most yin thing in the world. Even foundation-building cultivators fear it like a tiger, and it is rarely used in refining tools, unless it is some ancient inheritance, very rare special magical artifacts.

Over the years, Qin Sang had seen several places where Yin Shaqi permeated on the ancient battlefield, but none were as similar to the sunken caves of Shao Huashan.

Therefore, the Earthly Fiend Qi has been constantly consumed without replenishment. Moreover, refining a Fiend Corpse isn't always successful, resulting in waste. Now, there are only three bottles left.

Qin Sang took out three Shao Yin magnetic bottles and thought to himself.

If Earthly Sha Qi is running low, it's time for a trip back to Mount Hua.

>sistance of its soul became increasingly fierce, making Qin Sang dare not relax for a moment.A silent battle raged between them, the two-headed hound's vertical pupils blazing with ferocity.Time passe...