"Brother TECO, are you going to start?" Hearing Qin Dongyuan's voice, Qin Feng couldn't care about Meng Lin and the others anymore, and hurriedly returned to Qin Dongyuan's house.

"I have to wait for an hour...... Qin Dongyuan shook his head, pointed to a wooden barrel placed next to the Dan furnace, and said, "Spread the liquid in that bucket evenly into the inner wall of the Dan furnace......

"What is this for?" Qin Feng walked to the side of the barrel a little strangely, sniffed it vigorously, and suddenly understood, and said, "Brother Dongyuan, this is the juice of medicinal herbs, right?" ”

"Well, this is the sap of the rhizome of the white grass fairy, this plant is rather weird, it has no healing effect......"

Qin Dongyuan nodded and said, "However, after grinding the rhizome of this white grass fairy into juice, it can withstand high temperatures, and can effectively prevent the loss of medicinal properties of other herbs in the Dan furnace......

Originally, Qin Dongyuan didn't expect to find a plant like the White Grass Immortal in this space, but Qin Feng's backpack gave him a surprise, with the assistance of the White Grass Immortal, Qin Dongyuan's grasp of the successful refining of this furnace of elixir also became a little greater.

"The sap of the rhizomes of plants is resistant to high temperatures?"

Qin Feng smelled the smell of the juice, and sure enough, it was a herb that he had picked before, but Qin Feng didn't recognize this herb when he picked it, but saw that it was a long year before he picked it.

There were more than a dozen kinds of herbs that could not be distinguished like this, and Qin Feng still had more than a dozen kinds in his backpack, and in the spirit of preferring to kill the wrong ones rather than let go, Qin Feng almost swept all the plants of the previous year in the canyon.

Qin Feng thought for a moment and said, "Brother Dongyuan, I have never refined Dan. Or...... Or are you going to smear the juice of this white grass fairy? ”

In fact, strictly speaking, Qin Feng once refined the elixir for Peng Hong in Baku Town. However, the equipment of that meeting was extremely rudimentary, and Qin Feng himself felt that it was a great luck to succeed in refining. Since coming back, I have not been embarrassed to mention it to Qin Dongyuan.

Moreover, this alchemy was used to treat Meng Yao's condition, and the significance for Qin Feng was too heavy, and he didn't want to affect the final pill because of his own negligence, so he wanted Qin Dongyuan to do it himself.

"You are a martial artist, you can't even do this little thing?" After hearing Qin Feng's words, Qin Dongyuan pursed his lips in dissatisfaction and said, "What I recruited over there can accomplish, can't you do it?" ”

"Brother Dongyuan, dare you treat me as an alchemy boy?"

saw Qin Dongyuan's triumphant face. Qin Feng suddenly understood in his heart, and said immediately: "Cheng, don't say it's an alchemy boy, even if it's an alchemy boy, I'll do it, as long as Brother Dongyuan can refine the pill for me, let me do anything......"

As he spoke, Qin Feng picked up the wooden barrel, dipped some juice with the brush on the side of the barrel, and evenly smeared it on the inner wall of the Dan furnace.

The juice dries very quickly after leaving the barrel. After Qin Feng finished smearing it once, the front one was basically attached, and then he could brush it a second time, so Qin Feng brushed it five times. I used up all the juice in that bucket.

"Come, worship the ancestor with me, and bless us with this alchemy success......"

After Qin Feng finished smearing the Dan furnace. Qin Dongyuan pulled him to the hall, above the Eight Immortals table. I don't know when a picture was hung, and it was a Taoist with a fairy temperament.

"Brother TECO. Who is this? Qin Feng knew at a glance that this painting was from Qin Dongyuan's handwriting, but he had never seen the Taoist on the painting, and he had seen those ancient Taoist classics several times, and Qin Feng didn't figure out who it was.

"This is the ...... of Immortal Master Ge Hong"

Qin Dongyuan said with a respectful face: "Although there has been alchemy since the pre-Qin Dynasty, only Ge Hong's alchemy is authentic, he has eliminated the method of dansha alchemy and has his own school, legend has it that Ge Hong Immortal Master once practiced the elixir of immortality, so as to soar to break the boundary......"

"Brother Dongyuan, I only know now, it turns out that you are a fan of Ge Hong......" Seeing Qin Dongyuan's serious expression, Qin Feng couldn't help but laugh a little, he had known Qin Dongyuan for so long, and it was really the first time he had seen Qin Dongyuan respect a person so much.

"What are the fans?" Although Qin Dongyuan has been working hard to learn the knowledge of this world, he still doesn't know the meaning of some words.

"You go back and check this yourself......"

Qin Feng opened his mouth and said, "The record I saw about Ge Hong is different from what you said about Brother Dongyuan?" His alchemy in the inner chapter of Baopuzi is more about how to refine gold and silver, and there is no content about using plants in medicine? ”

Qin Feng is also familiar with Taoist classics, and has read all the works of Bao Puzi, that is, Ge Hong, but the records in it are somewhat different from what Qin Dongyuan said, Ge Hong's alchemy is somewhat similar to modern chemical knowledge.

"The things you see may not be the ...... written by Immortal Master Ge Hong."

After hearing Qin Feng's words, Qin Dongyuan said disapprerovingly: "I have a few alchemy books of immortal masters there, and I will show them to you when I go back, this Heavenly King Heart Protector Pill is the recipe left by Ge Hong Immortal Master, and you will know it at a glance when you see it......"

"Okay, I'll definitely see ...... when I go back this time."

Qin Feng nodded when he heard this, he knew a lot of historical truths, and it was not as recorded in the history books, maybe it was not impossible for someone to write the book "Hug Puzi" in the name of Ge Hong.

"Okay, after worshipping Immortal Master Ge Hong, let's start alchemy......"

Qin Dongyuan lit three sticks of incense and respectfully inserted them in the incense burner in front of the portrait, and after hearing Qin Dongyuan's words, Qin Feng was not so repulsive to Ge Hong, and those who were like this also offered three sticks of incense.

"Can we start?" After worshipping Ge Hong's portrait, Qin Feng asked.

"Okay......" Qin Dongyuan came to the Dan furnace and said, "Remember, for the first six hours, all use low heat to keep the temperature in the Dan furnace at about forty degrees, which is conducive to the evaporation of medicinal properties......

"I must have done this job...... didn't wait for Qin Dongyuan to command, Qin Feng said: "Don't worry, within six hours, I will keep the fire warm, and I will never let the temperature in ......the Dan furnace exceed forty degrees."

"Well, it's ...... teachable."

Qin Dongyuan touched the beard under his chin, walked straight to a reclining chair in front of the Dan furnace and sat down, picked up a purple clay pot next to him that had already made tea, took a sip, and said, "You don't need me to teach you when you turn on the gas stove, right?" Remember, you can only use warm fire......"

"Yes, you can drink tea and rest......" Qin Feng really doesn't have any temper at all now, in order to treat Meng Yao's illness, let alone give Qin Dongyuan a hand, that is, let Qin Feng guard this Dan furnace for seven days and seven nights, Qin Feng is also willing.

Six hours was really nothing to Qin Feng and them, and it passed in a blink of an eye, and just when the time came, Qin Dongyuan, who was originally recuperating with his eyes closed, suddenly opened his eyes and said, "Put out the open flame and use the true yuan to cool down the Dan furnace so that the herbs can crystallize ......."

Although he didn't understand what Qin Dongyuan meant, the movements of Qin Feng's hand were not slow at all, while turning off the gas with one hand, the palm of the other hand was already attached to the Dan furnace, and during the operation of the true yuan, a layer of frost suddenly appeared on the surface of the Dan furnace, but it was condensed by Qin Feng's true yuan.

"Keep it for three hours, and after the herbs are crystallized, immediately ......roast them over high heat," Qin Dongyuan was very satisfied with Qin Feng's expression, and crossed Erlang's legs and said: "If I had an alchemy boy like you back then, I wouldn't have destroyed the precious elixir of the three furnaces......"

The real alchemy is by no means as simple as controlling the fire, but the yin and yang complement each other, which means that except for the martial artists who can transform the true element attributes, the rest of the people cannot perform alchemy.

Qin Dongyuan's alchemy boy back then, at best, was to help him clean the herbs and brush the Dan furnace, but when he really made alchemy, he couldn't help at all, all of them had to be done by Qin Dongyuan himself, and there was no room for mistakes.

Moreover, if you want to refine a furnace of elixir, it takes a long time, sometimes even seven or eight days, even if you are a martial artist, you will feel unbearable, which is also the reason why Qin Dongyuan often fails in alchemy.

Qin Dongyuan at that meeting used firewood to refine the pill, and he needed to constantly add fire or draw out burning firewood to control the temperature, but now that there is gas, it has become easier to control the fire, and Qin Fengyi is also a lot easier.

However, even so, Qin Feng was also instructed by Qin Dongyuan to turn around, and after baking on the high fire for three hours, he turned to warm fire again, and then he needed to use the true yuan to cool down, and this process was repeated seven or eight times.

For three days and three nights, Qin Feng almost never sleeped, and on the fourth day, Qin Dongyuan finally took over and started the final refining of this furnace of pills, he had completely given up the gas for fire, and was consuming his true yuan to heat or cool down the pill furnace.

This process lasted for nearly ten hours, even if Qin Dongyuan's cultivation was profound, at this time, there was steaming heat coming out of his head, obviously the consumption in his body was very large, although Qin Feng, who was resting next to him, had the intention to help, but at this moment, he could no longer intervene.

"Damn, it turns out that alchemy is like this?"

Qin Feng couldn't help, but his divine sense could observe the situation inside the Dan furnace, and he found that Qin Dongyuan's true yuan seemed to have turned into a pair of big hands, constantly stirring in the Dan furnace, and the herbs that had been refined and squeezed into a mass that were somewhat similar to crystals actually formed pills the size of a dragon's eye in the rolling. (To be continued......)