Wu Fan moved this Ding Dan furnace to the side of the pool for cleaning, although this Dan furnace is very heavy, but Wu Fan is a ninth-level warrior after all, this weight is still more than enough.

While cleaning, he also thought about how to use it to refine the most perfect elixir later.

In the system training space, the Dan furnace he has been using is actually the most ordinary Dan furnace, so this has no effect on him, the question is what to do with the rust on this Dan furnace now?

Washing only washes off most of it, but there will be some stubborn residues.

When these rusts are smelted into the elixir, they will inevitably be mixed into the elixir, thus affecting the efficacy of the elixir and even reducing its purity.

This is something that Wu Fan can hardly tolerate.

He insisted on practicing hard day and night, wasn't it just to be able to refine the most perfect Pei Yuan Dan?

If you destroy this, won't your efforts be in vain?

So, the biggest challenge is: how do you get rid of the rust completely?

Wu Fan gradually fell into hard thought......

Time passed bit by bit, and Elder Xu did not urge Wu Fan to hurry up, but stood aside and waited quietly.

The people by the stone gate were full of puzzlement, and they stared at each other with big eyes, and their eyes were full of doubts.

Can that kind of Dan furnace also be used for alchemy?

Did Wu Fan really accept it?

Why did Xu Lao give Wu Fan such a Ding Dan furnace?

They wanted to ask, but they didn't dare, and it was already a blessing to see this assessment that they couldn't watch.

However, Wu Fan is always unexpected, maybe he can create a miracle this time?

Anyway, there was no clue left and right, so everyone had to wait as well.

......

"Rust...... Scorched Black...... Carbonization...... Neutralize ......"

Wu Fan muttered to himself, and suddenly, he seemed to have caught something, and suddenly stopped what he was doing.

"I remember when I was in the special training space of the system, there was a time when the temperature of the Dan fire was too high, which caused the Dan furnace to break, and there were signs of carbonization in many places, and even the pill was pitch black, at that time, in a hurry, I accidentally added more Xuanyu water, and in the end, although the pill was not formed, the color returned to normal, and it smelled the same as normal......

"Do you mean ......?"

Thinking about it, Wu Fan's eyes gradually brightened.

After finding a solution, Wu Fan's cleaning action was also fast, and soon, he cleaned the Dan furnace and moved it back to its original place.

"Ready?"

Xu Lao asked with a smile, although he didn't think that Wu Fan could succeed in his heart, but he didn't show it on the surface.

"That's it!"

Wu Fan replied very confidently, he was even a little impatient now, wanting to verify his guess for himself.

"Let's talk about it first! The elixir for the assessment is not provided for free, and we will see it later

If the refining fails, you will have to compensate according to the original price, but if you succeed, take this pill as your assessment fee!"

Xu Lao specially reminded him, but a strange smile appeared at the corner of his mouth.

"Profiteers!"

Wu Fan couldn't help but scold in his heart.

No wonder he didn't charge the assessment fee at the beginning, Wu Fan still felt that he had taken advantage of it, and they calculated it clearly here.

This method of collecting assessment fees, no matter what the result is, the Alchemist Association is sure to make a profit.

If it fails, the original price will be compensated.

Success is an elixir.

You must know that in this assessment, even if you know that this pill is to be paid to the Alchemist Association, each examiner will continue to go all out!

After all, this is a matter of your own future, and you can't be sloppy at all!

Compared to this, the elixir that was refined was a trivial matter......

"Hmm. ”

Wu Fan nodded helplessly, he had no choice but to agree.

"Cheap for you. ”

After sighing in his heart, Wu Fan shook his head fiercely, leaving all his distractions behind, and he began to focus all his mental power in order to play to his maximum level.

"Prepare a pair of Pei Yuan Dan's elixir for me. Wu Fan said.

"A pair?"

Elder Xu was surprised, "The assessment time is very abundant, you can refine it two or three times, why don't you prepare more than one pair?"

"No need. Wu Fan shook his head and refused.

With his current spiritual power, he could only insist on refining once.

After one time, he was powerless to continue, whether he succeeded or failed......

The waiter quickly handed over the elixir that Wu Fan needed.

"The assessment begins!"

Xu Lao announced directly, and then lit a long stick of incense, and the burning of the incense was the end of the assessment time.

However, Wu Fan did not rush to make a move, but first carefully observed the situation of the elixir.

"Well, it's very good, it's all good quality elixir. Wu Fan praised with satisfaction.

The quality of the elixir is an important factor related to the quality of the elixir!

Wu Fan has practiced almost any quality elixir in the system space, but for the elixir of very poor quality, even if he tries his best, it is difficult to meet his requirements!

Then Wu Fan stopped grinding, he picked up the heather, flipped his right hand, and a wisp of burning Dan fire suddenly appeared in his hand.

Wu Fan put the Dan Fire under the heather grass and roasted it, wanting to extract its essence liquid, he followed the usual steps, slowly and methodically, step by step......

Wu Fan is skillful, seems to be strolling leisurely, and does every step in an orderly manner, and can't make any mistakes.

These are the results of his hard work!

Xu Lao nodded from time to time as he watched from the sidelines, and he expressed great appreciation for Wu Fan's attitude of perfecting the details.

choose

Pei Yuan Dan is not wrong, many people will choose Pei Yuan Dan during the assessment, after all, it is difficult to refine, has strong efficacy, and is the best medicine to take points.

But the problem is: not everyone can refine Pei Yuan Dan well!

Some examiners simply pursue the result, although they are finally refined, but the purity is extremely low, and the efficacy is also very poor, so it is better to change to a simpler specialty elixir......

In the first assessment, Wu Fan easily said the twenty-eight mistakes of the waste pill, which shows that he has a deep understanding of Pei Yuan Dan, so Wu Fan must have strong confidence if he wants to refine Pei Yuan Dan.

And Xu Lao also knows this very well, so he is full of curiosity about Wu Fan's alchemy.

On the one hand, there is the mastered Pei Yuan Dan, and on the other hand, there is a rusty and inferior Dan furnace used, when the two meet, what kind of sparks will be sparked?

In this regard, Xu Laoshen was interested.

As the so-called outer door looks lively, the inner door looks at the doorway.

Jiang Ruoyu and Mu Yanran only felt that Wu Fan's method of extracting the elixir looked very pleasing to the eye, but it didn't seem to be anything special.

But the bearded man and the black mole man were shocked to find that Wu Fan had extracted the essence of each elixir!

One more point contains impurities, and one point less is insufficient.

And Wu Fan happened to master this degree!

Every movement of his can be understood by both of them, but after being connected together, they don't understand why this effect can be achieved?

There is no other reason, but every step is done to the extreme......

As the saying goes, details determine success or failure!

This sentence is especially applicable to alchemists.

Every step you make is wrong, it seems like nothing, but when you finally become a pill, these accumulated thousands of impurities will become your biggest obstacle!

Not only is it difficult to become a pill, but the purity will also be reduced a lot, resulting in a decrease in the efficacy of the medicine......

After Wu Fan extracted the essence part of all the elixirs, he put them into the Dan furnace one by one.

"Next, it's the most important step!"

Wu Fan's eyes revealed a resolute light, and he began to cover the Dan furnace with his spiritual power, knowing the subtle changes within it well.

"Start smelting!"

The first is to gather the same medicinal liquid into a small pile, which is actually not difficult, but the difficulty is how to proceed normally after the existence of more rust.

"Poof~"

Wu Fan sprinkled a few drops of the remaining Xuanyu water on the side, and then closed his eyes and began to control the convergence of the medicinal liquid.

"What is this?"

Old Xu's pupils contracted, and he couldn't understand why Wu Fan wanted to sprinkle a few more drops of Xuanyu Water into it, wouldn't this destroy the condensation of the elixir?

But he didn't ask on the spot.

This is alchemy! It requires a high degree of concentration from the alchemist, and any noise is not allowed.

Elder Xu kept this doubt in his heart, and then stared more intently at Wu Fan's refining process......