The "Dan Sutra" was given to Lin Feng on a plate, which not only contains alchemy, but also alchemy, and also has a corresponding forging chapter, which is used to cultivate soul power.

In alchemy, there are some very ancient pills, which have almost all been lost in the world of Yiling. Alchemy is mainly to explain how to refine all kinds of Dan furnaces with different functions. As for the God Forging Chapter, there are a total of three parts, upper, middle and lower, and Lin Feng has already cultivated to the second part.

A wisp of soul power was infused into the Dan Sutra, absorbing the knowledge inside, and this time he wanted to engrave all the contents of the Dan Sutra in his mind, so that he could extract his memory and cultivate at any time.

Sword God Ye Fei and Fengshen Lu Yun have both been cultivating in seclusion for more than five hundred years, and now the leader of the inner disciple is Lin Feng of the Beast King Peak, and his record is up to the antique-level Heavenly Puppet Zun, down to the outer disciple who has just started, and there is no one who doesn't know.

This time, Lin Feng was going to retreat and practice alchemy, which reawakened everyone's memory. During the Qi refining period, he was able to refine the anti-heaven level spirit pill, and then he had been traveling outside, and the name of the alchemy genius gradually faded, and at this moment, the news came out again, and the entire immortal gate shook.

Lin Feng's demonic name has been deeply rooted in the hearts of the people, and his short career of cultivating immortals for more than 20 years is like a magnificent history book with ups and downs.

The content of the "Dan Sutra" was very bitter, and it was really difficult for Lin Feng, who was just getting started, to accept so much information at once. There was a huge gap between the third and fourth levels of the Dan Technique, just like the distance between the seventh layer of the Qi Refining Stage and the first level of the Dao Transformation Realm, it was difficult to cross.

"The eighth-level Danzun Liumu predecessor once said that in order to become a qualified alchemist, you must first cultivate the fire of life, and now that you have fused the fire with the fire of the extreme yang, and you have cultivated the fire path space, the fire of life has been completed, as long as you comprehend the fourth-level Dan technique, then you can start refining the fourth-level elixir. ”

Lin Feng's mind was constantly filtering the content of the fourth-level Dan technique.

"Hey, there is a Dan prescription in the fourth-level Dan Technique that is quite special. Lin Feng's spiritual power captured that somewhat strange Dan Fang. There are more than two hundred species of spirit grass recorded on this pill recipe, and there are also some third-level blood crystal details. As far as he knew, the first-level elixir was twenty or thirty kinds of herbal formulas, and the second-level elixir formula herbs were only fifty or sixty, and only some third-level elixirs required more than a hundred kinds of herbs, and there were also some requirements for the year of the herbs.

As for the fourth-level elixir, Lin Feng had also seen a lot of pills, but they were all around one hundred and fifty kinds, and this was the first one with more than two hundred kinds of pills. To refine a fourth-level elixir, it must also be an elixir. Elixir generally refers to herbs that have been hot for more than a hundred years, and the more aura it contains, the higher the quality of the elixir refined.

"Yuan Dan, an elixir that can cultivate mana, soul, and body at the same time. It can be refined in two ways, one is to refine it directly according to the formula, and the other is to refine the finished elixir again, so that the spiritual energy contained in it will change in essence and transform into a higher level of heaven and earth energy-Yuan Qi. Ordinary monks can only absorb the aura of heaven and earth, and only after achieving the Dao of Divine Spirits and surviving the sixfold heavenly tribulation can they communicate with the mysterious time and space, and extract and devour immortal qi from it, which is a higher level of heaven and earth energy.

Yuan Qi is a kind of energy between Spiritual Qi and Immortal Qi, which is ubiquitous, but very few people can directly refine and absorb it. Yuan Qi can speed up the cultivation speed of cultivators, and even the Great Venerable of the Divine Spirit Dao Infant Realm is extremely eager to use Yuan Qi to wash the flesh and Dao Infant, so that the success rate can increase a little when crossing the Six Heavenly Tribulations.

"I don't know if Yuan Dan really seems to be so powerful, I still have some fourth-level spirit soul pills on my body, you can try it first. As soon as Lin Feng opened his mouth and swallowed, the Heavenly Crystal Pill Furnace flew out and turned into a shape more than one person tall. The Tianjingdan furnace is already at the Dao level, and it can be big or small with the mind. The maximum limit can be transformed into a giant statue with a height of one hundred and ten meters, with a total of eight layers of space inside, which can refine elixirs from level 1 to level 8 at the same time.

With a wave of his hand, Lin Feng took out twenty fourth-level spirit soul pills, catapulted them into the fourth layer of the Heavenly Crystal Dan Furnace, and then collected the Dan Furnace into the fire path space.

The evolved flame in the center of the fire path space sank to the bottom of the Dan furnace, and the extreme yang fire in the entire space was under Lin Feng's control, slowly warming the spirit pill in the Dan furnace.

Lin Feng was constantly adjusting the strength of the Yang Fire according to the Dan Fang, and at the same time monitoring the operation of the Heavenly Crystal Dan Furnace.

On the third day of alchemy, Lin Feng, who had closed his eyes tightly, frowned, and he sensed that three fourth-level spirit soul pills in the Heavenly Crystal Pill furnace had turned into a pile of ashes and had been refined and abolished.

"It's not a loss of ancient alchemy, and if you find another way, the difficulty has become several times higher. Lin Feng muttered a few times in his heart, gathered his mind again, and observed the transformation of the remaining Soul Pill.

In the following ten hours, another twelve fourth-level spirit pills were reimbursed. At this moment, there were still five Soul Pills left in the Heavenly Crystal Pill Furnace, and fine cracks appeared on the surface of these five Soul Pills, which seemed to be turning into ashes at any time.

Next, Lin Feng was even more careful, but he only persisted until the fifth day, and the remaining five Soul Pills finally emitted a puff of green smoke and were scrapped.

"It seems that the method of refining the elixir and transforming the Yuan Dan is a bit unworkable, not only is the success rate very small, but it also wastes the finished elixir in vain. However, this day, the Jingdan Furnace is a good treasure, and even the Extreme Yang Fire, which even the Great Venerable is afraid of, cannot cause any damage to it. ”

Lin Feng's spiritual power withdrew from the fire path space, and with a sweep of his soul power, he learned that there were many disciples standing outside, and there were waves of spiritual energy fluctuations in the space.

"Elder Wuzi and the disciples of Yaofeng stay, and the rest of the people don't have to stay here. ”

"Yes. Soon there were half of the people left in the courtyard.

"Lord Lin Feng, the elixirs from level four to level six that you need to use have all been allocated, do you want to start alchemy now?" Elder Wuzi had already broken through to the middle stage of the Evolution Realm, and he led the disciples of Medicine Peak to stay in the courtyard with a somewhat abnormal expression.

As soon as he finished speaking, he saw a flash of light, turning into a huge furnace thirty meters high. Then an extremely terrifying soul power pressed down, causing everyone's eyes to change greatly. However, this powerful soul power did not attack them, but suddenly turned into rigidity and softness. The elixir prepared in front of them was constantly controlled and thrown into the Dan furnace, and in just over ten breaths, more than two hundred kinds of elixirs were consumed by as many as four layers.

Elder Wuzi's eyes were red, his hands were clenched tightly, and his whole body was trembling slightly, as if a wave of anger was forcibly suppressed in his body.

The more than twenty disciples of the Dao Transformation Realm and the more than thirty disciples of the Qi Refining Period were also pale, what kind of elixir was this Lin Feng refining, and he actually consumed so many elixirs at once, each elixir here was over a hundred years old, and it took them endless energy, and they were usually reluctant to use one, but now it is good, in the eyes of the Lord of Lin Feng, it is no different from cabbage.

"Elder Wuzi, you have lost your temper. ”

After collecting the elixir needed to refine the Yuan Dan, the Heavenly Crystal Pill Furnace also returned to the inner room. Lin Feng's indifferent voice echoed in the courtyard, waking up all the disciples on the medicine peak like thunder. Elder Wuzi's body was stunned, his face immediately turned pale, and a trace of blood actually flowed from the corner of his mouth and ears.

"Elder. The Medicine Peak disciple exclaimed at the same time.

"Elder Ben is fine. Elder Wuzi hurriedly waved his hand, and then bowed to the room.

"Elder Wuzi, in the past twenty years, your alchemy has not been able to break through to the Dan King realm, and you have developed a deep demon. If you continue like this, your life will be in danger. As soon as Lin Feng's words fell, a memory crystal flew out, "You can cultivate the secret technique in this, and it has a strong inhibition on your demonic nature." ”

Elder Wuzi stretched out his hand and grabbed it, and with some hesitation, he put the memory crystal on the center of his eyebrows, and after a while, he bowed again with an excited expression, "Thank you, Lord Lin Feng." ”

"This secret technique of the Buddha realm Buddha reclining meditation is actually a gift from Senior Brother Wu of the Tibetan Scripture Pavilion, okay, I want to concentrate on alchemy. As the words were immersed, Elder Wuzi looked at the elixir that had consumed the fourth layer, "Qin Lan, you lead the five junior disciples and go to get a batch of high-grade elixirs." ”

"Yes, the disciple obeys. ”

In the room, Lin Feng had already included the Heavenly Crystal Pill Furnace into the Fire Dao Space, and a total of two hundred and twelve elixirs of the main ingredients for refining the Yuan Dan had been collected, and as for the third-level blood crystals needed, he had a lot.

Under the refining of the Extreme Yang Fire, those elixirs quickly turned into drops of pure spiritual liquid, and some residues entered the third layer of the Dan Furnace, and after being filtered again, the residues that did not meet the conditions entered the second layer. After two filtrations, the last remaining residue is the real waste residue, and there is no trace of aura in it.

Now Lin Feng's soul power is so strong, rare in ancient times, as soon as the soul power turns, those spiritual liquids will be controlled loosely, as long as all the spiritual medicines are refined, the condensing pill step can be carried out.

The days passed, and in a blink of an eye, it had been half a month, and the rumors that had been spread in Xianmen for half a month had long been spread. All the disciples with status knew that Lin Feng had retreated for alchemy, but this time the situation seemed to be very abnormal, first, he did not ring the giant bell, and second, he did not trigger the earth's fire. From the mouths of Yao Feng's disciples, they also vaguely knew that there was no fire power coming out of Lin Feng's retreat room.

Could it be that Lin Feng was not refining the pill, but studying the medicinal properties? This kind of thought even Elder Wuzi had a little bit of it.

Another five days passed, and there was finally a trace of fluctuation in the room, and surging mana emanation emanated, waiting for the disciples of the Medicine Peak outside to withdraw one after another.

In the Heavenly Crystal Pill Furnace, nearly 100,000 drops of different spiritual liquids were floating, and Lin Feng's soul power could not be controlled drop by drop, but it could wrap them and slowly fuse them.

With a flip of his hand, he threw in a hundred third-level blood crystals in a row, and the strength of the five elements was complete.

Once the blood crystal was refined, it immediately turned into boiling blood, which could be integrated into the spiritual fluid.

"It's not a big reaction, I'll put some dragon essence blood into it and have a look. "Nearly a thousand drops of dragon essence blood were smashed into the fourth layer of the Dan Furnace.

Suddenly, the Heavenly Crystal Pill Furnace shook suddenly.