Mortal: I became invincible after becoming sworn brothers with Han Li.

Chapter 168 Dark Flame Shield

"As expected of a Core Formation cultivator's spiritual fire!"

Li Yunfan secretly praised himself, and began to look forward to the power of his spiritual fire after he formed his core.

Just then, the piece of metal emitting a pale purple luster was also refined by Zhao Huang into a pool of purple liquid and collected into a jade bottle.

As Zhao Huang continued to refine the materials, he collected all the remaining materials into jade bottles or boxes.

"Young friend Li, we'll need your spirit fire to assist us now!" Zhao Huang said with a light breath.

"Rest assured, senior, I will do my utmost!" Li Yunfan replied solemnly.

Zhao Huang nodded, then cast a spell with both hands, extinguishing nine of the ten fire dragon pillars, leaving only the middle one.

With a wave of his hand, more than a dozen colorful liquids flew out of the bottle and gathered together in the air.

Looking at the dark liquid, Zhao Huang pointed a finger, and the liquid flew into the gushing earth fire.

Immediately afterwards, he made a hand seal and opened his mouth to spit out a stream of red spiritual energy into his spiritual fire.

After absorbing the spiritual energy, the red spiritual flame rose up with a "poof," as if it had taken some kind of powerful tonic.

As the red spiritual flames surged towards the black liquid, Zhao Huang immediately called out softly, "Young friend Li!"

Upon hearing the other party's call, Li Yunfan immediately summoned the Purple Nether Heart Flame.

After channeling a wisp of spiritual energy into it, he flicked his hand, and the Purple Nether Heart Flame roared into the earth fire—

The following period is quite difficult, requiring continuous refining over a period of time to remove all impurities from the materials and purify them.

Even for Zhao Huang, who was at the Core Formation stage, it was an extremely energy-consuming and spiritually demanding task.

Li Yunfan, who was only at the Foundation Establishment stage, found it even more difficult to endure!

Fortunately, this place is rich in spiritual energy, and it is all fire-attribute spiritual energy.

For him, who cultivates the Nine Revolutions Burning Heaven Technique, he only needs to circulate it within his body a few times to quickly refine spiritual energy and replenish his own losses.

However, absorbing spiritual energy alone is far from enough to compensate for the consumption; elixirs are still needed to replenish the other part of the loss.

And so, Li Yunfan and Zhao Huang sat quietly in the stone chamber, with three flames intertwining in the center, continuously purifying the spiritual liquid.

Every few days, Zhao Huang would add several kinds of spiritual liquid ingredients again.

On the twenty-eighth day, the two opened their eyes at the same time, and then simultaneously withdrew the spiritual fire into their bodies.

At this moment, within the subterranean fire, the dark, murky liquid had transformed into a gelatinous substance with alternating red, purple, and brown colors.

The Spirit Liquid was finally purified and refined together, and Zhao Huang could not hide his excitement!

"Young friend Li, you've worked hard. Hurry up and recover. The spiritual embryo still needs to be forged in the earth fire for three days before the real time to refine this item begins!" Zhao Huang took a deep breath and suppressed his excitement as he spoke.

Li Yunfan softly replied "Yes," then closed his eyes and silently circulated the Great Evolution Technique to recover his spirit and depleted divine sense.

Three days later, Li Yunfan opened his eyes, and Zhao Huang officially began to solidify his embryo!

Under his divine control, the soft spiritual embryo was gradually shaped into a three-colored seal-shaped magic weapon carved with the image of a phoenix.

He then pointed at a jade box containing red powder on the ground, and the red powder immediately flew out and sprinkled evenly on the tricolor seal.

Then he opened his mouth and spat out the ball of red spiritual fire, which flew out again and rushed towards the three-colored seal.

This time, Li Yunfan didn't need any prompting; he directly summoned the Purple Nether Heart Flame and controlled it to fly upwards.

Nine days have passed in the blink of an eye.

The tricolor seal, forged by three flames, has now completely lost its brown and purple hues, transforming into a crystal-clear red seal.

Upon seeing this, Zhao Huang solemnly pointed to the white porcelain bottle beside him.

The stopper popped open automatically, and a shimmering, silvery liquid with a unique aroma flew out, directly into the flames and enveloping the red seal.

Upon seeing this, Li Yunfan immediately formed hand seals and then pointed a finger at the Purple Nether Heart Flame.

The spiritual energy within his body surged wildly through his fingers, shooting straight into the Purple Nether Heart Flame.

With the blessing of spiritual power, the Purple Nether Heart Flame instantly grew in size and its power increased by 20-30%.

Zhao Huang, who was standing to the side, also poured his own spiritual power into the red spiritual fire.

Three hours later, Li Yunfan was covered in sweat and his face was slightly pale, which was a sign of excessive consumption of spiritual energy.

At this moment, he had less than 20% of his spiritual power left. If he couldn't successfully refine this magic weapon, he would really run out of spiritual power!

As if knowing he was about to give up, the red seal suddenly trembled, and an astonishing aura gradually spread out from it.

Upon sensing this aura, Zhao Huang's eyes flashed with a sharp light. He immediately bit his tongue and spat out a mouthful of blood essence onto Hong Xi!

Then Zhao Huang gave a soft shout of "Withdraw!" and withdrew his red spiritual fire back into his body.

Upon hearing the sound, Li Yunfan immediately took action, retracting the Purple Nether Heart Flame almost simultaneously with his opponent.

After both of them withdrew their spiritual fire, Zhao Huang cast another spell to reactivate the nine extinguished fire dragon pillars.

The raging subterranean fire instantly engulfed the Crimson Seal!

Only then did Zhao Huang finally breathe a sigh of relief and say, "Alright, now we just need to refine it with earth fire for another seven days, and this treasure will be completely finished!"

"Congratulations, senior, on finally obtaining a precious treasure!" Although Li Yunfan's expression was not very good, he still offered his congratulations.

"Hahaha! Young friend Li has truly deserves immense credit for this treasure refining!"

Zhao Huang was clearly flattered, and after laughing twice, he thanked Li Yunfan.

After he finished speaking, he patted the storage bag at his waist, and a palm-sized, dark red round shield engraved with intricate spirit patterns flew out of the bag.

With a gentle wave of his hand, the dark red round shield floated to Li Yunfan's front.

"Senior, what is this—" Li Yunfan looked at Zhao Huang with some confusion.

"This Dark Flame Shield is a top-grade defensive magic weapon that I crafted. Consider it payment for your help, young friend Li!" Zhao Huang explained with a smile.

"A top-grade defensive magic weapon!" Li Yunfan was shocked, and then his heart burned with excitement.

Defensive magical artifacts are inherently more expensive than offensive ones, and at the top tier, the price difference can be hundreds or even thousands of spirit stones.

Looking at the Dark Flame Shield in front of him, Li Yunfan couldn't help but feel conflicted.

He had previously received two jade slips as a reward from the other party: one containing insights into weapon crafting and the other containing weapon crafting techniques.

If we were to accept this Dark Flame Shield as well, wouldn't that be too greedy?

Seeing that Li Yunfan did not accept the magic weapon, Zhao Huang roughly guessed what the other party was thinking, so he smiled and said.

"This magical artifact is of little use to me now, and you've helped me refine it into a magical treasure, so as a senior, I should naturally show my appreciation. As for the two jade slips from before, consider them an added reward!"

Upon hearing this, Li Yunfan took a deep breath, his mind immediately clearing up, and he put the Dark Flame Shield into his storage bag.

"Thank you so much for your kind gift, senior!"

Zhao Huang smiled and nodded, then closed his eyes and said nothing more.

Seven days later, the magic weapon finally completed the earth fire tempering, and Li Yunfan was personally escorted back to Luoyun Sect by Zhao Huang, who was in a great mood.

After returning to his sect, Li Yunfan will finally begin preparing for Core Formation.