The sun rose in the east, and bursts of soft yellow light sprinkled the entire Tianzhuo Peak, waking up the sleeping Ling Feng, but as soon as he got up from the boulder, he suddenly felt that he seemed to have become different.

"What is this?"

He couldn't help but use the "Five Elements Sword Divine Technique" mental method to take a look, only to see that the original turbid inner heaven and earth had formed an extremely simple pattern that looked like a sword and not a sword......

"Ling Feng, although you have already entered the 'Dao Domain' realm, your cultivation is only a martial artist realm after all, so naturally you can't evolve into a real sword domain, because the real 'Sword Domain' requires the Martial Emperor Realm to exert its power to the extreme, understand?" Xuan Wuji said lightly.

Hearing this, Ling Feng's mind condensed, and he wanted to destroy the Sword Domain, but he found that the range covered by his mind was less than three feet, and after thinking about it, he quickly understood, and said respectfully at the moment: "Master, disciple understands. ”

In his previous life, Ling Feng was a Martial Venerable peak realm powerhouse after all, and Xuan Wuji was only a little bit, so he would naturally be able to understand it quickly. Last night, on those one hundred and eight stone steps, the reason why he issued such a powerful sword move was that he borrowed the power of Tianzhuo Sword Peak and transformed the power that destroyed him into a sword domain, which was the only way to achieve that power.

"Ling Feng, the sword inheritance of our Heavenly Humble Sword Peak is different from other sword peaks, not in the form, but in the meaning! Xuan Wuji paused at this point and continued: "Ling Feng, you actually want to learn alchemy, as a teacher, I will teach you alchemy first!"

"Thank you, Master!"

Ling Feng saluted respectfully, but secretly said in his heart: "The three-foot range is under control, with the sword moves, I believe that I can also protect myself in the face of the Martial Venerable Realm, it is enough for me now, the most important thing now is to break through the quenching body ...... as soon as possible."

"The elixir is divided into one to nine orders, and each elixir is divided into four grades: primary, intermediate, upper, and extreme. When Xuan Wuji said this, he took out a small jade bottle from his arms, poured out a pill and handed it to Ling Feng, and said slowly: "It's like this Biling Pill in the master's hand only belongs to the first-order spirit pill." ”

Ling Feng took a look and saw that the Biling Pill in his hand was not only round and transparent, but also had a faint glow, and the color was extremely high. Although he is not ignorant of alchemy, he can also see that Xuan Wuji's alchemy technique may have touched the edge of the alchemy master.

"This is a top-grade Biling Pill, the required spirit herb elixir, the steps when refining the pill and the places that need attention, the teacher has prepared all for you, you can start refining from this level of elixir, you can refine a furnace of the best Biling Pill within half a month, it is considered qualified, otherwise, it means that Dan Dao will have no chance with you, do you understand?"

"Disciple understands!"

Xuan Wuji nodded, and then pointed to the only intact stone hall on the top of the peak and continued: "Ling Feng, that is the Dan Hall of our Heavenly Humble Peak, when the spiritual herb elixir is used up, Xuan Yu will naturally send it, you go, if there is anything you don't understand, you can ask the teacher again......"

"Yes, Master. ”

Ling Feng replied respectfully, and immediately walked into the dilapidated stone hall, only to see that in the empty stone hall, there was only a quaint stone tripod and a stone table, on which were placed six kinds of elixir spirit herbs and a jade slip.

The fire used in alchemy is not an ordinary fire, but a spiritual fire transformed by a martial artist from the true qi in his body, so if he wants to become an alchemist, talent and divine thought are a prerequisite. The so-called divine thoughts, to put it bluntly, are mental control, and some people's mental induction abilities are inherently extremely strong, which has the conditions to become an alchemist.

Because many pills have to be refined for a few days, or even months or years, as soon as the furnace is opened, the true qi is transformed into fire, which itself requires strong divine mind control, so people with weak energy can't even master the basic fire, let alone support the Dancheng furnace!

Of course, there is an exception, and that is to use heavenly fire or earth fire to alchemy. Legend has it that there are thirty-six kinds of heavenly fire and seventy-two kinds of earth fire in the vast heaven and earth, and each flame is the only existence between heaven and earth.

Whether there is a heavenly fire and earth fire in the Zhongtian Continent, no one knows, because of this kind of magical flame generated by the creation of heaven and earth, the vast majority of martial artists have no chance to see it, so the heavenly fire and earth fire are just an almost ethereal legend for the Zhongtian Continent.

Ling Feng picked up the jade slip on the stone table and carefully read all the contents, the provisions in it clearly recorded the heat needed when refining the Biling Pill, and how to grasp the true qi......

After reading the contents of the jade slip, and pondering it in his heart again, Ling Feng couldn't help but think: "I don't know if the method recorded in this jade slip is better than the alchemy method in the 'Dan Dao True Explanation'? ”

Two plants of Biling Grass, one plant of Ming Qian Zi, three double flowers, five plants of dry pond grass, and half a penny of spring cold vine.

Dan into a furnace, alchemy apprentices can get five to ten of the first grade of the pill, and alchemy disciples can get seven of the middle grade pills or three of the upper grade pills in one furnace. An alchemist can get five to seven high-grade pills or five top-grade pills in one furnace, and an alchemist can get eight to ten top-grade pills or five to eight top-grade pills in one furnace.

"A furnace of pills usually produces five to ten pills, and if you want to refine a furnace of the best Biling Pill, it seems that this test is not easy!" Ling Feng then understood, the seemingly extremely simple first-order Biling Pill, to refine the best pill, it was necessary to advance to the level of an alchemist.

Of course, a first-order elixir like Bi Ling Dan is rarely refined by alchemists, let alone alchemists. So it's not that refining a furnace of the best Biling Pill is an alchemist, but that an alchemist can refine a furnace of the best Biling Pill, and maybe refining a furnace of the best Biling Pill does not mean that you are already an alchemist.

But it is not easy to refine a furnace of the best Biling Pill within half a month, even if the alchemist does it himself, refining ten furnaces, it is good to be able to produce about five furnaces of the best Biling Pill. The reason why Xuan Wuji did this was to try to see if Ling Feng had any alchemy talent, and secondly, to let Ling Feng lay a solid foundation. The inheritance of Tianzhuo Peak far surpasses that of other sword peaks, and the difficulty is naturally extremely great!

For alchemy, one medicinal material can be refined separately in the furnace, or several medicinal materials can be put in and refined together at the same time. Although the requirements for refining the lowest-level spirit pill such as Bi Ling Pill were not high, except for the main medicine, which was a more precious spirit grass, the rest of the side medicines were not even considered spirit grass, but Ling Feng obviously would not put in several medicinal materials at the same time to refine.

Everything was ready, and Ling Feng used his true qi to purify the herbs and throw them into the Dan furnace according to the method described in the jade slip. Then he used the mental method to urge the spiritual energy to pour into the Dan furnace, and as soon as the spiritual energy touched the Dan furnace, the furnace immediately became red......

People who have never refined Dan will never understand the difficulties involved, first of all, how to maintain a well-proportioned True Qi is a problem. Although the Biling Pill only needs to be refined for half an hour to condense into a pill, it is inevitable that the true qi will fluctuate during this period, which will cause the fire to vary in size, and it is easy to refine all the pills in a furnace, so this makes Ling Feng very nerve-wracking.

"This heat seems to be the most critical issue in alchemy, I really don't know if the heavenly fire and earth fire recorded in the "Dan Dao True Solution" exists, if there is this kind of magical flame, I believe alchemy will become much simpler......"

In order to keep the fire in the Dan furnace even, he simply sat cross-legged next to the Dan furnace and measured it by the heat emitted by the Dan furnace, because once the Dan furnace activated the spiritual energy alchemy, his thoughts could not penetrate into it at all. So Ling Feng had no choice but to choose such a stupid method, and in a short time, his whole body was already soaked with sweat.

The second and most critical thing is how to grasp the timing of the furnace and the pill, which is an extremely difficult thing, because in the process of alchemy, the medicinal foam in the alchemy furnace will turn into spiritual liquid under the refining of the spiritual fire, and then gradually condense into the pill.

If the furnace is opened early, and the impurities in the medicine foam have not been completely refined, the pill will naturally not be able to condense, which will cause the medicine foam to become a pile of medicine ballast. The medicinal properties contained in it are less than thirty percent, and the medicinal properties are not only worse than the unrefined spirit grass elixir, but also contain various impurities in the elixir, so that the martial artist cannot absorb it at all.

If the furnace is opened late, the elixir may turn into charcoal in the furnace, and all the herbs in the furnace will be invalid. Therefore, it is not a simple matter to refine a furnace of elixir, and it must go through a long period of alchemy and be familiar with it.

This is still a first-order elixir, if it is a seventh-order or higher elixir, it is extremely difficult to even purify the spirit grass! In the absence of heavenly fire and earth fire, the usual method adopted, it will take several years to purify all kinds of spiritual herbs and elixirs, not to mention the various steps in the Dan process.

There is also a Cheng Dan rate, as far as Bi Ling Dan is concerned, only an alchemy master like Xuan Wuji can refine it himself, and he can naturally condense all the elixir and spirit grass, ten in one furnace. But even if he is an alchemy master, he can't guarantee that he can have a 100% success rate.

The alchemy apprentice Cheng Dan is to get five to ten Chu Dan in one furnace, but it refers to what he gets after Cheng Dan, not the real Cheng Dan rate. An alchemy apprentice's success rate of refining a beginner-level Bixin Dan, refining ten furnaces, and being able to have three furnaces of finished products is considered very good.

The reason why alchemy is an extremely money-burning thing is that it is impossible to imagine how many spiritual herbs it will take to become an alchemist, and ordinary sects simply cannot afford to cultivate at this price. Therefore, the status of an alchemist in the Zhongtian Continent can be imagined......

Don't look at the Bi Ling Pill as just a beginner-level spirit pill, a novice like Ling Feng can't master the fire at all, so it is naturally extremely difficult to become a pill. In fact, even if an alchemist came to refine this level of elixir, it was extremely normal to scrap one or two of the ten furnaces!

Ling Feng continued to follow the urging aura, and only after about half an hour did he lift the lid of the Dan furnace. An extremely unpleasant, strong smell of burnt medicinal stones rushed to his face, and he hurriedly covered his nose and looked into the furnace, only to see what kind of Biling Pill was in the Dan furnace, and all of them were black medicine bumps.

Obviously, all the herbs were scrapped!

Ling Feng sat by the furnace and slowly began to think about the entire process of his alchemy. Then the herbs were purified again, put them into the Dan furnace, slowly urged the true qi, and carefully felt the temperature change of the Dan furnace, and half an hour passed.

But the result was that the medicinal foam in the pill refining condensed at the end and became a puddle of medicinal ballast. Ling Feng refined five furnaces of pills in a row, either because the fire could not be controlled, or because he failed to grasp the time for the furnace to produce pills, and as a result, he only refined a large number of waste pills.

In the entire huge stone hall, bursts of smoke billowed out, and the strong smell of burnt medicine had enveloped the entire stone hall, which was not a place for people to stay at all, choking Ling Feng's tears to the point of "whooshing".

"If I follow the method that Master said, I may not be able to refine a furnace of the best Biling Pill in half a month, why don't I try the alchemy technique in the "Dan Dao True Solution"?"

Thinking of this, two dazzling lights immediately bloomed in Ling Feng's eyes......