Maybe Xiao Yu was too anxious and didn't realize that he had never taken the initiative to kiss Xiao Jiumei before, and he was attacked by the little girl every time.

Now in order not to make the little girl angry and disturb her alchemy, the ghost made a god hug the little girl and kissed her and ran away, leaving the little girl standing alone in place.

Although she had kissed Xiao Yu several times, this was the first time Xiao Yu had kissed herself, and she didn't expect that she was slightly surprised and had some sweetness in her heart.

After standing in place and reminiscing for a while, he came to the elixir garden to pick some elixirs, and tiptoed to the door of the alchemy room.

She didn't go in, just put the elixir outside the door, and then turned around and left with a smile on the corner of her mouth, and said softly when she left: "Bad boy, hehe!"

Xiao Yu is now focused on the study of alchemy, and he doesn't even know what he has done, let alone notice the little girl's strange behavior.

In the alchemy room, he first sat quietly for a while, eliminating all the distractions in his heart, and then converted all the knowledge about alchemy that he heard in the alchemy hall into words and recorded them on a piece of jade slip, and then interpreted them sentence by sentence.

Although Xiao Yu had already understood most of the contents of the jade slip very thoroughly, he studied this knowledge again, and found some essences that he had not fully comprehended.

His original intention of re-reading the jade slip was just to familiarize himself with it again, so as not to deviate when practicing for a while, but he didn't expect to comprehend something new when he studied this jade slip again.

These things are all alchemy principles hidden in a few words, maybe Elder Xu neglected to explain these, and he didn't notice it, it is more likely that Elder Xu deliberately left a foreshadowing, waiting for the disciples to dig it out by themselves, in short, Xiao Yu was overjoyed because he got some precious Dan Dao Truth.

Now he is not in a hurry to practice the purification technique of elixir, because he knows that alchemy and cultivation are actually the same, both are the insights obtained by comprehending the way of heaven, but the way of pursuing the Tao is different, and the result is the same.

Alchemy is only a derivation of the way of alchemy, the art is the form of the Tao, the Dan Tao is the real soul, and the Dan Dao is the true Dao.

As long as the way of alchemy is understood, alchemy will naturally come naturally, if the way of alchemy is not understood thoroughly, no matter how much you practice, the art of alchemy will not make much progress.

Thinking of this, he decided to comprehend the alchemy manuscript in his hand to the level of harmony and transparency first, and then start practicing the elixir purification technique.

Xiao Yu has always been a strong-willed person, as long as he decides to do something, he will do everything he can to do it.

At this moment, he was sitting in the alchemy room, studying the alchemy manuscript in his hand over and over again, the emperor lived up to his wishes, and finally after a day and a night passed, Xiao Yu put down the jade slip in his hand.

At this moment, he had already determined that all the Dan Dao theories in the jade slip had been integrated, and even some extremely obscure truths between the lines had been excavated by him.

He closed his eyes again and recalled the contents of the jade slip, and found that these Dan Dao theories were no longer what Elder Xu had told, but had completely become theories that Xiao Yu understood, expounding the theories of Dan Dao in his own words.

Xiao Yu opened his eyes with a smile at this time, because at this moment he was really able to master these theories, and only by becoming his own theory could he be regarded as truly mastering the theory.

He was full of joy now, and he didn't feel the slightest tiredness, probably because people were in good spirits on happy occasions, and they didn't rest for a day and a night, but they were still in good spirits.

On the one hand, it is because Xiao Yu's soul is strong, and on the other hand, Xiao Yu is so excited now, he can discover something that others can't discover, which will become a lot of spiritual wealth in the future, how can this not make him excited!

Xiao Yu tried his best to calm his mood, came to the alchemy furnace and sat down, and played a magic decision, guiding the flames in the leylines to start warming up the Danding.

The temperature of the leyline flame is very high, because it already has a certain spirituality, so it is even more violent, and it is not very easy to control.

Generally, it is difficult for people who control the leyline flame for the first time to master the fire, but for Xiao Yu, whose Yuan Shen realm is far beyond ordinary people, all this is a piece of cake.

The raging leyline flames were like docile sheep in his hands, and they were easy to control, and even an alchemy master would see Xiao Yu's ease of controlling the flames here, and his eyes would be filled with jealousy.

As for the most difficult level for alchemy beginners, Xiao Yu spent it leisurely, simply at hand, without a trace of stagnation.

He didn't dare to hold it up, and when the temperature of the Danding was not too high, he picked up a seven-star grass that was not high in age and threw it into the Danding, and his divine sense did not dare to relax for a moment to watch the situation in the Danding.

He closed his eyes, and his divine consciousness turned into a slender spiritual silk and probed into the Danding, feeling every change in the temperature in the Danding, Xiao Yu didn't dare to relax the seven-star grass in the center of the Danding.

At the beginning, the spirit grass did not change, Xiao Yu knew that the temperature had not yet been reached, so he divided a part of his divine sense to control the leyline flame to increase the temperature in the Danding little by little.

At a certain moment, Xiao Yu suddenly noticed that the leaves of the Seven Star Grass began to shrink, and then the dry zuihou burned, and a little spiritual light floated out of the ashes.

He quickly adjusted the temperature of the flames, and wrapped the crystals that emitted spiritual light with his divine sense and transported them to a cooler place to store them.

Gradually, more and more Seven Star Grass leaves turned into ashes, and there were more crystals emitting spiritual light, and these crystals were naturally the Spirit Grass Essence of Seven Star Grass.

All the leaves of Zuihou were reduced to ashes, and only a bare grass stalk remained in place, showing no signs of burning.

Xiao Yu thought in his heart: "Elder Xu once said that the purification temperature of different spirit grass is different, and now it seems that even if it is the same spirit grass, the purification temperature of different parts is not the same!"

Thinking of this, Xiao Yu controlled the temperature of Danding to continue to rise, until the grass stems also began to burn, he stopped continuing to raise the temperature, and began to control the spiritual power to separate the essence of the herb and the impurities that had turned into ashes.

Now the herb essence contained in the grass stem is many times more than in the leaves, and it is mixed with impurities, and it is a hundred times more difficult to separate than just now, but this is still not the slightest difficulty for Xiao Yu, this is all due to his far beyond the ordinary people's Yuan Shen realm.

When Xiao Yu took out the impurities that had turned into ashes from the Danding, he found that there was no trace of essence in the impurities, which showed that Xiao Yu had purified all the herbal essences of a seven-star grass, and there was no loss at all.

But Xiao Yu didn't have the slightest bit of pride, with his current Yuan Shen realm, it was natural to do this, it was strange that he couldn't purify it all, and he used a lot of time, there was nothing to be complacent about at all.

He knew that he had already integrated the theory, and as long as he practiced a few times, he would be able to fully grasp the method of herbal purification, so he took a random herb from his side and threw it into the Danding, and once again concentrated on practicing.

Until he used up all the herbs around him, he was still a little unsatisfied, and now he had practiced the purification method of the low-grade herbs such as the Seven Star Grass, and each one could be purified perfectly.

However, Xiao Yu understood that it was all because his soul realm was far beyond ordinary people, so he would complete the process of herbal purification so perfectly.

Although he can usually do this when he is practicing alchemy, but in the near future, when the alchemy test is held in the alchemy hall, he will not be able to use his current soul realm to participate in the test.

His soul realm is a big secret, and it is also his own life-saving hole card, and he can't leak it out in front of others no matter what, so he must ensure that he can reach the current level even if he only has the soul realm of the Qi refining period.

Xiao Yu decided to go to the Elixir Garden to collect some more herbs, and then adjust the soul realm to the level of only the Qi refining period, to verify whether he could perfectly purify a low-grade spirit grass.

In fact, Xiao Yu had already guessed the result in his heart at this moment, but he didn't give up without verification.

When Xiao Yu hurriedly opened the stone door of the alchemy room, he was pleasantly surprised to find that there were a large number of elixirs at the door, and Xiao Yu smiled knowingly.

He had already guessed that Xiao Jiumei was afraid that the herbs would not be enough when he was practicing, so he specially sent it to him, and he felt a warm feeling in his heart, and then held a large number of elixirs and walked into the alchemy room again.

This time, he deliberately suppressed his soul realm to reach the level of the Qi refining stage, and then began to control the leyline flames.

He had now finally discovered that, as Elder Xu had said, the leyline flames were not so easy to control, and he had almost exhausted all his strength to suppress the violent aura of the leyline flames, and he had no strength left to keep an eye on the situation in the Danding at all times.

Fortunately, he was already familiar with the nature of the leyline flame just now, and slowly became familiar with it, not blindly suppressing, but mainly channeling, supplemented by suppression, and finally he was able to control the leyline flame with great difficulty.

At this time, he tried to throw a herb into the Danding, although the process was no different from just now, but it was more difficult to control than just now, I don't know how many times, especially after the grass stem burned, a large amount of herbal essence and impurities were mixed together, and it was too late to separate them.

Zuihou Xiao Yu checked the ashes of the furnace and found that this time only seventy percent of the herbal essence was purified, although this was all expected by Xiao Yu, but he was inevitably a little disappointed.

"There is no genius in the world!" he sighed, and then quickly adjusted his mood and continued to practice.

Although the results of each time did not satisfy him, but every time he could make some progress, until Zuihou ran out of herbs, he was able to purify ninety percent of the essence of the herbs, and it was difficult to achieve it if he wanted to make progress at one time.

As soon as the three days passed, it was time for Elder Xu to teach again, Xiao Yu tidied up his clothes and walked out of the alchemy room, the hard work of these three days was not in vain, he could be regarded as truly entering the threshold of Dan Dao, laying a solid foundation for the achievement of Dan Dao in the future.