Song Yan took out the Qilin scale from his qiankun bag, then rummaged through a corner to find several pieces of yun iron.

yun iron is a common forging material for refining and repairing Spiritual Artifacts.

His current stock was all exchanged using the remaining merit points from the previous Changping mission, after exchanging for Qi Yang Pills.

He threw a piece of yun iron and a Qilin scale into the fire pool.

As soon as the yun iron entered the fire pool, it melted at a visible rate.

It transformed into a stream of hot metal liquid, flowing into the body of Lord Lin’s sword.

At the same time, a trace of black Impurities separated from the tip of the sword.

The melting and forging speed of the Qilin scale was slower, but some results could still be seen.

Song Yan was both surprised and delighted.

The effect of this fire pool far exceeded his expectations; it could not only repair sword damage but also automatically melt and refine sword forging Materials.

He no longer held back, taking out all the yun iron he had previously exchanged for and throwing them one by one into the fire pool.

yun iron is very common; if he ran out, he could just go to the Artifact Refining workshop to buy more.

Qilin scales, however, could not be wasted.

But, according to the estimated ratio of the fire pool’s current melting speed, it should be enough.

To recast Lord Lin’s sword body... if it could be completely cast with yun iron once more, plus two Qilin scales, Lord Lin could leap to become a High Grade Spiritual Artifact.

It was only because he didn’t understand Artifact Refining techniques; otherwise, by adding some other Artifact Refining Materials, it might even reach the might of a top-grade Spiritual Artifact.

"This Fenru Karma Fire, I really chose correctly."

Instead of foolishly waiting for the casting process, Song Yan left the Liangyi Realm.

Sword Qi gathered, and a sword light flew out from the scabbard behind him, hovering in front of him.

Unlike the solemn Wind Thunder from before, this sword light was attached with a scorching spiritual flame.

"Hmm..."

Upon closer inspection, compared to the Breath of Wind Thunder, "Fenru" seemed to enhance the destructive power of the sword shadow.

However, in terms of speed, it was slightly inferior.

He casually dispersed the sword shadow, and a huge sense of emptiness came over him.

Song Yan then realized that he didn’t know if it was due to refining Fenru or due to forging the Flying Sword in the flame pool of the Liangyi Realm.

In any case, his spiritual power and Sword Qi were almost depleted at this moment.

He quickly set up a Spirit Gathering Array, took out Spirit Stones, and slowly began to recover.

Several hours later, the Spiritual Qi in his body had recovered by seventy to eighty percent.

Song Yan finally had the energy to begin studying Thousand Pills Formulas.

The author of this book seemed to be merely an Alchemy attendant in an Immortal Sect, guarding a Pill Furnace for a certain "Senior."

He called himself "Chen Yi," but he dared not write the name of this "Senior" in the book.

He only said that this Senior’s Alchemy skills were "unparalleled in the world."

"What a grand claim..."

The longer he stayed in the Cultivation World, the more Song Yan felt insignificant.

Seeing such a description, he only thought that this Mr. "Chen Yi" might be underestimating the heroes of the world.

The Dao of Alchemy is profound and extensive; without a large accumulation of resources, it is very difficult to achieve anything significant.

The Qi Nourishing Pills Song Yan had refined before were truly quite rudimentary.

Now, to seriously pick up the Dao of Alchemy again, he naturally put himself in a very humble position.

He would consider himself as having never learned Alchemy at all.

Many factors influence Alchemy.

But the three most important are Materials, pill fire, and Divine Sense.

Every Medicinal Pill has its own Pill Formula, which is the crystallization of countless predecessors’ exploration and experimentation based on the medicinal properties of Spirit Medicine.

Some Materials with similar properties can be interchanged, but the effect of the Medicinal Pill refined after the substitution will have subtle differences.

For example, Ming Jue Pill and Qi Yang Pill, although both Breakthrough Pills, have different effects.

Due to their significant differences, they are even named separately.

Divine Sense influences all aspects of Medicinal Pills; the heat and timing of Alchemy can even directly affect the efficiency of pill formation.

And these are all linked to the strength of Divine Sense.

In the basic Alchemy books Song Yan had studied before, the Pill Furnace and flame for Alchemy were also considered extremely important parts.

However, in Thousand Pills Formulas, there was hardly any mention of them.

Because this was originally a "heretical Dao" that recorded unconventional Alchemy methods.

Senior Chen Yi said in the book: "When an Alchemist fully understands the medicinal properties, proportions, and principles of pill formation..."

"Then whether using fire methods or lightning methods."

"Sword Qi or Killing Intent."

"As long as the Impurities of the medicinal Materials can be removed and the essence required for Alchemy can be extracted, then the biggest factor influencing whether a pill forms and its quality is only Divine Sense."

Temporarily skipping over methods like lightning and water, he found "Sword Qi Pill Refining" in Thousand Pills Formulas.

Surprisingly, this niche Alchemy research was the most extensive part of Thousand Pills Formulas.

At the beginning of this section, there was a short story.

It said that this Senior, whose Alchemy skills were unparalleled in the world, had a Sword Cultivator friend who was also a leading figure in the Cultivation World.

For a time, this Sword Cultivator Senior came to chat with the Alchemy Dao Senior.

The Sword Cultivator Senior mentioned that he had a Disciple who really wanted to learn the Dao of Alchemy; this person had strong Divine Sense and impressive cultivation talent.

However, the only drawback was that she knew nothing about medicinal properties and pharmacology.

No matter how she tried, she couldn’t learn it.

Originally a Cultivator with extraordinary talent and exceptional Comprehension Ability, when faced with Alchemy, she became a "stubborn fool."

The Sword Dao Senior thought to himself that he happened to have such a good friend whose Alchemy skills were renowned throughout the world, so he came to inquire about the reason.

The Alchemy Dao Senior said: "If her Divine Sense is not weak, then memorizing pharmacology should certainly be no problem."

"But most of you Sword Cultivators are single-minded; the problem might lie in the process of controlling the pill fire with spiritual power during Alchemy."

"The method of controlling spiritual power is completely different from the method of using Sword Qi."

The Sword Dao Senior sighed faintly: "It seems my Disciple will have a hard time becoming an Alchemist."

"That’s not necessarily true." The Alchemy Senior shook his head: "Perhaps we can try directly replacing spiritual power with Sword Qi for Alchemy."

Thus, this sparked the two Seniors’ conception and discussion of "Sword Qi" Alchemy.

Later, the Senior Sister, whom the Sword Dao Senior called the "Alchemy Fool," came to visit and diligently studied the methods of Sword Qi Pill Refining with the Alchemy Dao Senior. 𝘧𝓇ℯ𝑒𝓌𝑒𝑏𝓃𝘰𝘷𝘦𝘭.𝒸ℴ𝓂

Senior "Chen Yi" was also very interested in this, so the two discussed and researched together.

Sometimes, the Alchemy Dao Senior would also come to guide them, and after much diligent research, a relatively complete method was finally developed.

After confirming that it was not misleading and seeking the approval of the two Seniors, Junior Brother Chen Yi took the lead in writing, with the Senior Sister adding annotations, and finally compiled this Thousand Pills Formulas.

Song Yan had never expected to see the shadow of ancient Sword Cultivator Seniors in an Alchemy book.

However, it was probably not a coincidence.

After all, if he weren’t a Sword Cultivator, he wouldn’t have been interested in such an Evil Path book at all.

Let alone waste a precious opportunity to exchange it from the fourth-level classics.