Ling Yifeng didn't care about the Origin Flame that Lin Yuxin said, and being able to let her stay here for a longer time was what Ling Yifeng was more concerned about.

"Since you are so obsessed with this Yuan Huandan, then I will teach you the method of refining now!"

Lin Yuxin didn't see what Ling Yifeng was thinking, although she also had some doubts in her heart, why was Ling Yifeng's talent in pill art so high, but he couldn't find the origin fire in his body?

It was indeed strange for a pill pharmacist who didn't have an origin fire, but it was nothing compared to Ling Yifeng's own strangeness!

Gently lifted the lid on the medicine pod, and suddenly, a red tongue of fire swept out, with an astonishing heat as if it was about to burn through the space. Lin Yuxin quickly threw a dark green magic core into the lid, and then closed the opening.

I have to say that the material of this medicine tripod is not ordinary, when the lid is closed, the intense high temperature is also isolated, Ling Yifeng can only feel the furnace itself exuding a slight warmth!

"You should also know the most difficult step in refining the second-grade elixir, which is to refine this demon core!" Lin Yuxin glanced at Ling Yifeng and said, "But you should also know how strong the demon core is, ordinary flames can't hurt it at all!"

Ling Yifeng nodded, about this, presumably no one would not know!

From the moment she threw in that magic core, Lin Yuxin's face became serious, she raised the temperature of the flame in the Ding furnace to the maximum, and roasted the magic core with all her might.

Ling Yifeng could feel that the flame had reached an unprecedented terrifying high temperature, but neither the demon core nor the inner wall of this furnace showed the slightest sign of melting!

Ling Yifeng smiled a little self-deprecatingly in his heart, this demon core was able to withstand such a high temperature, so it seemed that the flames he had catalyzed with his spiritual power might not be able to burn the demon core!

Ling Yifeng, who was still thinking about whether he had an origin flame or not, suddenly changed his mind at this time, if he really didn't refine a origin flame, he would probably really say goodbye to refining pills in the future!

Lin Yuxin had already sat down cross-legged at the moment, she didn't speak, her eyes were closed, and as time passed, fine beads of sweat gradually oozed from her forehead!

The difficulty of refining the demon core was even higher than Ling Yifeng imagined, and when the calcination lasted for a full hour, Ling Yifeng realized that the hard demon core in the furnace seemed to have begun to soften and deform a little, and drops of liquid like tears slowly flowed down the outer wall of the demon core, but they did not fall, but hung at the bottom of the demon core like water droplets, crumbling but never falling.

Until this time, Lin Yuxin still did not relax, still controlled the temperature of the fire steadily, and continued to roast this half-soft and half-hard demon core!

Another half an hour passed, and the demon core was finally completely calcined and melted, although it was not obvious from the outside, Ling Yifeng could feel that the hard shell of the demon core had completely melted, and the mass that was now hanging in the center of the furnace was actually a paste between a crystal and a liquid!

Under the constraints of the outer wall of the demon core, all the spiritual power contained in the entire demon core was released!

Fortunately, the spiritual power of the wood attribute itself is relatively mild, coupled with the high temperature surrounding the origin flames, that spiritual power has not been scattered and leaked!

Lin Yuxin finally opened her eyes, she gently wiped the sweat droplets on her forehead, and a relieved smile appeared on her face, it seems that this step should be completed!

However, Ling Yifeng's heart felt a little bitter, this first step made him feel very difficult, with Lin Yuxin's fierce flames had been calcined for nearly an hour and a half, so with his own spiritual power flames, he didn't know how much time it would take to refine the demon core!

"The demon core has been refined, and although the spiritual power in it has been calcined at high temperatures, it is still very violent, and ordinary people can't bear it at all!

"One black tongue grass, half a lotus fruit, three star orchids......"

Lin Yuxin said as she threw the auxiliary materials into the medicine furnace one by one, and the medicinal materials that were newly put into the medicine furnace were quickly burned by the high temperature and withered and curled, and finally shrunk into a pile of granules or small droplets.

Mixing these fired auxiliary materials into the emerald green demon core liquid, it finally quieted down again after a crackling sound erupted in the Ding furnace! Ling Yifeng was suddenly surprised to find that the violent energy in the demon core liquid had actually weakened a lot, and it was not much worse than the ordinary spiritual power between heaven and earth! If he was allowed to absorb these spiritual powers at this time, I am afraid it would not be too difficult!

"Whew-" With a long breath, Lin Yuxin brushed a wisp of green silk on her cheek behind her ear, and her face finally relaxed a little!

"If you complete this step, you're basically half the battle!" Lin Yuxin said, "Next, as long as you finish refining the remaining medicinal materials into a pill, you're done!"

Ling Yifeng watched as she threw ten Qi Yuan Fruits, ten Vitality Flowers, ten fifty-year-old snow ginseng, ten fifteen-year-old Red Immortal Fruits, and ten thirty-year-old Purple Heart Orchids into the furnace together.

The flames quickly devoured these medicinal herbs, turning them into small particles, which slowly mixed together under the control of Lin Yuxin's spiritual power and turned into pills the size of soybeans. Looking at the pitted holes above, Ling Yifeng thought to himself, this should be regarded as the prototype of the elixir!

Without stopping, Lin Yuxin mixed the entire pile of pill prototypes into the pool of emerald green demon core droplets, and then raised the temperature of the fire again and continued to calcine. Next, these emerald green demon core spiritual liquids were gradually absorbed into the small pills, and the small pills were also dyed a pale green color, and on its surface, they were no longer pitted, but became round and smooth! Under the reflection of the red flames, it looked extraordinarily beautiful!

"It's done!" Ling Yifeng sensed this scene in the furnace and couldn't help but shout excitedly.

Lin Yuxin raised her eyebrows and glanced at him, and said lightly: "Don't be in such a hurry, if you don't completely bake the pill out of the fire, the spiritual liquid in it will slowly pass and be wasted!"

Ling Yifeng's face flushed slightly, and he nodded honestly.

After another half an hour, when the surface of each small pill reflected a strange luster, Lin Yuxin slowly reduced the flames, she stood up and stretched, and then a pure line of fire quickly burst out of the fire mouth and fell into Lin Yuxin's palm!

Such a high-temperature flame was like an obedient baby in Lin Yuxin's hands, and it didn't cause half a bit of damage to her!

Looking at Ling Yifeng's somewhat strange expression, Lin Yuxin seemed to have guessed his thoughts, and said with a smile: "This origin fire is very difficult to refine, if it can be recycled, don't waste it, if you want to refine a fire in the dantian, it will take several days!"

"Okay, the Yuan Huan Dan has been refined, hurry up and prepare the bottle to pick it up!" Lin Yuxin smiled and waved her hand.

Ling Yifeng nodded, took out a small jade bottle that had been prepared a long time ago, and rushed to the mouth of the Ding Furnace. This medicine tripod is really amazing, under such a high temperature, even the magic core was burned into a ball of liquid, it was not damaged at all, and gently touched the surface of the Ding furnace, it was not hot, only a warm feeling!

In order to hold these elixirs, Ling Yifeng was specially generous and found a jade vial, although it was not a high-grade material, it was still much stronger than the previous small porcelain vase!

"Ding ding!" A pleasant voice sounded, and one by one the Yuan Huan Dan with residual warmth was packed into this jade bottle, just when it was almost full to an inch from the mouth of the bottle, all the Yuan Huan Dan had been collected! Ling Yifeng counted them when he received them, there were as many as one hundred and thirty-two in total!

Gently pouring the bottle, he poured a blue-green round pill into his palm and looked closely, this pill was slightly smaller than he had imagined!

"Is this the elixir that can quickly restore spiritual power?" Ling Yifeng's eyes widened, and he looked at this pill that was less than the size of a soybean in disbelief.

"Of course!" Lin Yuxin wrinkled her nose and said proudly: "Under the Strength Divine Soul Realm, as long as you take one, you can replenish your spiritual power in just a few breaths!

"How many breaths can I regain my spiritual power?"

Ling Yifeng smacked his tongue in some surprise, generally speaking, absorbing spiritual power has a great relationship with one's physique and cultivation techniques. With Ling Yifeng's own cultivation of Ling Tianjue, his speed of recovering his spiritual power was already far stronger than that of most people of the same level!

In this way, as long as you have enough of this elixir, when you fight with people, it is equivalent to having inexhaustible spiritual power, so that even if you can't beat the opponent, even if you drag the opponent hard, you can drag the opponent to death!

"What's the matter, you still don't believe it?" Lin Yuxin glanced at him lightly and said, "If you don't believe it, you can try it yourself!"

"How could I not believe the elixir you refined?" Ling Yifeng showed a flattering smile: "I just feel a little too amazing!"

Lin Yuxin ignored his sycophancy, and said lazily: "You should understand the refining process just now, there is also a magic core here, if you want to try it, you can try it yourself!"

Catching the demon core thrown by Lin Yuxin, Ling Yifeng showed a wry smile: "I see it, this is this demon core, I'm afraid I won't be able to refine it for a while!"