Then he raised his head and said to the audience on the stage: "I'll demonstrate it now, you observe and perceive carefully, you can learn as much as you can, if you can't feel anything, you have to consider whether it is suitable for alchemy." ”

When everyone in the audience heard this, they nodded in agreement.

The Teaching Dan Master nodded in satisfaction, and then punched a Yuan Force into the Flame Stone, and the Flame Stone was ignited. Then he threw a spirit grass into the Dan furnace, and as the temperature in the Dan furnace gradually increased, the spirit grass turned into a green medicinal liquid churning in the Dan furnace, and at the same time, a large amount of black impurities were filtered out of the Dan furnace, and the medicinal liquid became more transparent and turquoise.

Of course, the scene of the Dan furnace is presented to everyone through a special projection method, otherwise so many people would not be able to see this scene, this is also the first time Xiao Yifan has come into contact with the projection equipment of this world, which makes him still very curious.

After the Dan Master felt that the impurities of this medicinal liquid had been dissolved, he put it in a container for later use, and then put another spirit grass into the Dan furnace again, repeating the previous steps.

Xiao Yifan stared intently at the Dan Master who taught the class, and threw one after another of the spirit grasses of different shapes into the Dan furnace, carefully feeling the temperature changes from high to low, and his eyes showed a look of relief.

He could judge from the spirit grass selected by the teaching pill master that what he was refining at this moment should be the most difficult Qi Condensing Pill to refine in a first-grade spirit pill. The Qi Condensing Pill is a kind of elixir that assists martial artists to break through to the Qi Condensing Realm, although it is a first-grade elixir, but because it is an elixir used to break through the realm, its degree of difficulty is even higher than that of some second-grade elixirs.

What the man teaching in front of him was doing was the purification of the spiritual grass described in the Wan Shi Dan Sutra.

The grade of the elixir is determined by the grade of the elixir, but the same elixir is also divided into quality, which are the lower grade elixir, the middle grade elixir, the upper grade elixir and the best elixir, and the purity of the liquid medicine is the key to determining the quality of the elixir.

The higher the purity of the extracted spirit grass, the higher the quality of Cheng Dan will be, and vice versa, if the degree of purification is too low, it will not be able to become a Dan.

Xiao Yifan judged that the purification of the medicinal liquid of the teaching Danshi should be eighty percent, and this purity is very high, and it is very possible to refine the high-grade elixir.

After the teaching Dan Master had purified all the spirit herbs, he fused the medicinal liquids one by one in a specific order, and soon the Teaching Dan Master had fused all the medicinal liquids. However, in this process, Xiao Yifan frowned slightly, and muttered in a low voice: "Is this order wrong?" In his memory, the order of fusion of the medicinal liquid for refining the Qi Condensing Pill in the Wan Shi Dan Sutra was not like this.

Just when he was puzzled, the Dan furnace had begun to waft out of the rich Dan incense, a gray-white elixir gradually took shape in the Dan furnace, with the formation of the pill, the Dan master shouted: "Collect", twelve elixirs flew out of the Dan furnace and fell into his hands.

The teaching Dan Master nodded with satisfaction, he was very satisfied with this alchemy, first of all, the twelve full pills, this one is very rare; Secondly, there are two high-grade pills in it, which is even more rare.

However, Xiao Yifan saw that there were only two top-grade spirit pills, and muttered in a low voice: "Sure enough, there is still a problem." According to his understanding, if the order is correct, even if it is not a full pill, it should be a high-grade spirit pill.

What he said was very quiet, but it was still heard by a few disciples who were listening to the lecture around him, these disciples who listened to the lecture admired the Sanpin Dan Master who was teaching in front of them, and heard Xiao Yifan first say that the order was wrong, and now that he said that there was really a problem, he immediately became a little angry, and scolded loudly: "You don't understand, what are you muttering nonsense, do you know what is Mandan?" What is the high-grade elixir? ”

His words were immediately recognized by the others, and the other disciples immediately reprimanded them.

The scene became a little chaotic for a while, and the Dan Master on the stage naturally noticed the situation here, so he asked loudly, "Do you have any questions?" ”

As soon as his words fell, the first disciple who accused Xiao Yifan stood up and replied: "Senior Brother Duan, this kid is here to slander Senior Brother Duan, there is a problem with the order of what to say for a while, and there is really a problem with what to say for a while." When he spoke, his hand pointed at Xiao Yifan.

The teaching Dan Master, who was known as Senior Brother Duan, looked at Xiao Yifan and recognized Xiao Yifan at a glance, this was the one who almost killed the elder of the Ning Dan Realm, Man Jianghong, and he didn't dare to offend easily, after all, he was not an elder yet.

He chuckled and said, "I didn't expect Senior Brother Xiao not only to be good at the exercises, but also to know how to do alchemy, I just did something bad, and I asked Senior Brother Xiao for some advice." The words were very polite, which made all the disciples feel a little curious, Senior Brother Duan was usually not so easy to speak.

However, at this time, Xiao Yifan had already attracted the attention of everyone present, and many people recognized him, and from time to time someone muttered in a low voice: "Is this the kid who hit Elder Man hard with a blow that day?" ”

"What that boy, you keep quiet, be careful of being heard by him."

"It's him, I want to call Senior Brother Xiao, I heard that he is very vindictive."

······

Listening to everyone's discussions, the few people who scolded Xiao Yifan at the beginning were a little panicked, it turned out to be this person, if they had known that it was him, they would definitely have been silent just now.

However, Xiao Yifan didn't care about these, he took a few steps forward and said; "Senior Brother Duan, the most important thing in alchemy should be the purification of the spirit grass and the mixing order of the medicinal liquid."

Hearing him say this, Senior Brother Duan nodded and motioned for him to continue.

Xiao Yifan was not polite, and continued, "The degree of purification is related to the quality of the final Cheng Dan, because of the different attributes of different spirit grasses, the requirements for temperature when purifying are also different, in addition to understanding the properties of spirit grass, fire control is also extremely crucial." ”

"The mixing of liquid medicine is the most important step before Chengdan, and the different mixing sequences will lead to different degrees of fusion of medicinal properties, which will affect the quality of Chengdan."

He paused for a moment and continued: "Senior Brother Duan's purification just now has done a good job, the purity has reached more than eighty percent, theoretically it should be a top-grade spirit pill, however, due to some problems with the order of Senior Brother Duan's fusion of medicinal liquids, in the end, although it is a full pill, there are only two high-grade spirit pills. ”。

Hearing this, Senior Brother Duan's face instantly became a little gloomy, obviously unhappy, but he didn't have a seizure, but said: "Then Senior Brother Xiao, let's talk about it, when I fused the medicinal liquid, why was the order wrong?" ”

Xiao Yifan naturally saw the change in Senior Brother Duan's face, but he didn't mean to back down, and said with a chuckle: "I must be unhappy when I say this, Senior Brother Duan, but I can demonstrate it, and Senior Brother Duan will know it at a glance." ”