After several setbacks, Xu Yi believed what was said in an alchemy notebook: Dan Dao is one way, one Dan ten thousand laws, if you don't enter the Simen, you will be reasonable, just like a blind man touching an elephant.

Danfa is a very mysterious thing, and if you can't enter the profound stage, you can't get started, and if you don't enter the door, you can't communicate with each other.

To put it bluntly, just reading some classics and doing some experiments does not mean getting started.

Because the medicinal properties of medicinal materials are too complicated, such as the dispensing of Yuan Dan, the main medicinal properties of the three herbs, very distinct, but there must be miscellaneous properties, specific to the same herb, different soils, years, will be destined to different miscellaneous properties, often this microscopic difference, can determine the success or failure of the adjuvant.

In addition, each person's alchemy technique is different from the microscopic level, so the same medicinal materials are different from the finished products refined by different people.

To put it in layman's terms, alchemy is not an assembly line production, the same raw materials and production equipment, and any skilled worker can produce the same product.

It is precisely because of various microscopic differences that the threshold for entry is formed.

It is precisely because of the microscopic differences that the one Dan Ten Thousand Laws have been formed, and the so-called Ten Thousand Laws are not the differences of the Dan Fang, but the differences of the alchemists.

For example, refining Yuan Dan, Dan Fang has never been the most important.

The most important thing is actually the success rate, and if the success rate is guaranteed, it proves that an alchemist can control the microscopic differentiation relatively stably.

Why did the people of the Gongxue Society obviously refine the Yuan Dan, but they were not treated differently by the top management of the Xuanqing Sect.

Because everyone knows that even if the alchemists below the spiritual root refine the Yuan Dan, it is because of chance.

This kind of serendipity is extremely difficult to replicate.

At the root of this, it is difficult for monks below the spiritual root to have the strength to control microscopic differentiation stably.

In a word, the entry threshold for alchemy lies in understanding this microscopic differentiation, otherwise no matter how much experience is summed up and more experiments are done, it will be difficult to achieve real results.

And this kind of micro differentiation varies from person to person, and it is difficult for others to teach.

Only after crossing this threshold can one truly get started, and can you have effective Dan Dao theoretical exchanges with other alchemists.

Otherwise, how can someone who is still memorizing multiplication formulas get involved in other people's discussions about calculus and linear algebra?

At that time, although Xu Yi had also heard about the alchemy in this regard, he was not as profound as his own practice after all.

He understands now, this level, others can't help him, only he can pass it by himself, as for whether he can break through, he doesn't have the slightest bottom in his heart.

This is completely a process of enlightenment, and if you are enlightened, you will be enlightened, and if you don't realize it, you will not be enlightened, maybe it will be broken in ten days, or it may be ten years without a solution.

Gradually, crossing the threshold of the Dan Dao became Xu Yi's obsession, and he experimented with alchemy all day long.

For this reason, he even spent 200 yuan pills to buy a monthly service for earth fire.

Soon, the first dispensing bottomed out, and the second dispensing consumed more than half, and Xu Yi didn't even touch the shadow of the formed auxiliary.

"Uncle Beard, what are you doing, I haven't seen you for many days. ”

On this day, Xu Yi was on the seventh day of retreat for alchemy, and Qiuwa broke in, dissatisfied with the authenticity.

In the past, although Xu Yi was alchemy, he still remembered to spend time with her, but now he is obsessed with his life, as if he has fallen into a demon.

At this moment, Qiu Wa was startled when she saw Xu Yi, if it weren't for Xu Yi's eyes that were still gentle, Qiu Wa would have screamed.

Xu Yi in front of him was pale, skinny, and had a large beard and hair, dirty and messy, all knotted and shaggy.

Xu Yi waved his hand at her and said, "Uncle Hu Zi is refining pills, you go play, after a while, Uncle Hu Zi breaks through, and he will come to look for you." ”

After that, he focused on the changes in the green furnace.

Seeing Xu Yi like this, he knew that this matter was very big, so he no longer urged, but he felt that the cyan stove was burning brilliantly in the fire, which was very beautiful and interesting, so he stood quietly on the side, and he should watch the excitement.

In an instant, another hour passed, and Qiuwa's little brows furrowed higher and higher, because his all-powerful Uncle Beard had failed three more times.

"No, Uncle Beard, no, the air flow in the west can't flow, it can't be mixed with the air flow in the east, otherwise it ......"

Qiuwa suddenly spoke, before the words fell, a scorched gas came, the green fire furnace flashed, the scorched gas dissipated immediately, and a mass of waste from the base of the Dan furnace, put into the ground fire, burned empty.

Xu Yi was stunned, and after more than ten breaths, he turned his head and stared at Qiu Wa, his eyes were a little scary, Qiu Wa whimpered, and he was about to cry in fright.

Xu Yi reacted at this time, hurriedly hugged her, and comforted her repeatedly.

Qiuwa stopped crying, wrinkled her nose and ignored Xu Yi, suddenly, covered her little nose again, jumped away from Xu Yi's arms, and shouted, "Stink, stink...... Uncle Beard must have not taken a shower for a long time......"

Xu Yi smiled embarrassedly, "Okay, Uncle Beard will take a bath right away, take a bath right away." But before that, you have to tell Uncle Hu Zi, how do you know that the two air currents can't be mixed together, hurry up, tell Uncle Hu Zi. ”

Before Qiu Wa's words fell, the alchemy failed, and Xu Yi never thought it was a coincidence.

Qiuwa smiled proudly, "What's so strange about that, I've watched it four times, you did it the first three times, and then you failed, don't people still know how to sum up their experience?"

Xu Yi stared at Qiuwa in disbelief, "You said that my four operations were ruined at this step, this, what the hell is going on?"

In Xu Yi's eyes, every time he operated, his medicinal properties and aura were constantly changing.

But Qiuwa said this, which made him extremely uneasy.

Qiuwa said, "Don't you want to blend the two gases of Chong and fish, as a result, every time you refine the pure, there will be miscellaneous gases invading, and every time the two gases of Chong and Fishy are not refined, you will begin to blend, once the impure Chong and Fishy two gases gather in one place, there will be a mushy smell in your furnace." ”

Qiuwa's voice like a warbler, Xu Yi couldn't understand a word.

Seeing Xu Yi's dazed face, Qiuwa took a black root grass from the bamboo basket not far away, waved her little hand, and a pure halo appeared in her palm.

The next moment, the black grass disappeared, replaced by a spectrum of different colors, in general, the spectrum is divided into four lines, light cyan, dark green, thick lead, and a faint variegation, and among the light cyan, dark green, thick lead, and in some parts, mixed with variegation.

Qiuwa said, "What are you looking at, Uncle Beard, don't you input your aura in, feel the feelings, and see what is the difference between it and the alchemy furnace." ”