In ancient times, alchemy emphasized the need to choose a good day, but modern alchemy is not so particular, any day, any hour, as long as the things are ready, you can do alchemy immediately. Of course, the place of alchemy is still exquisite in modern times, but it is not as cumbersome as in ancient times.

Chen Xiaobei's practice of the "True Scripture" also emphasizes that he is a serious person, so he is also very particular about the time when refining the pill.

However, he usually alchemy during class, and the refining is some ordinary pills, and he will not be so pedantic that he has to wait until a certain hour.

But this time it was different, refining the high-grade elixir "Tianyi Life Continuation Pill", and he couldn't be sloppy, so he chose the day and hour that was in line with "Tianyi", and then he started alchemy, with Ning Zhiqing and Du Junfeng assisting on the side.

He still used his own Dan furnace, and Ning Zhiqing made it clear that he was willing to give his Dan furnace to Chen Xiaobei to use, but Chen Xiaobei refused. He was still used to using his own Dan furnace, although this Dan furnace didn't seem to be as good as Ning Zhiqing's.

He had seen Ning Zhiqing's Dan furnace, it was very new and beautiful, and the prohibition of engraving was also better than the Dan furnace that Chen Xiaobei was using now, but the effect of alchemy was actually not better than the Dan furnace that Chen Xiaobei was using now.

Alchemy is not the same as refining. In refiners, some special materials require extremely hot flames to melt, so the flame of the refiner must be as hot as possible.

In alchemy, almost all the materials do not need to be particularly high, as long as they are about the same, and even most of the materials need to be slowly refined over low heat.

Just like cooking rice, it is not good to cook over high heat, sometimes it needs to be simmered on low heat.

Therefore, refining weapons is very fast, and weapons can often be refined within a day. Alchemy, on the other hand, can take days, months, or even years.

In fact, alchemy pays more attention to the controllability of the flame temperature.

Chen Xiaobei is more familiar with his Dan furnace, and it is relatively simple to control the temperature, and the temperature of the furnace is relatively stable.

This is also why many alchemy masters have a fan of the fire, because many herbs require different temperatures when refining, and the fire needs to be controlled by the fan boy.

Chen Xiaobei has always been refining the pill by himself, but this time, in order to refine the Tianyi Life Continuation Pill, he specially pulled Du Junfeng over to help him fan the wind.

First, this alchemy must take a long time, and he really needs Du Junfeng to help him share the pressure of controlling the fire, and secondly, he also has the idea of taking Du Junfeng over as a coolie and punishing him a little.

Although Du Junfeng guessed in his heart that Chen Xiaobei was deliberately playing tricks on him, he was concerned about Shen Yingmeng's injury, so he pretended not to know and let Chen Xiaobei send him.

In addition, the Dan furnace is actually very particular, the older the Dan furnace, the better the effect on refining the pill.

This is what he learned from the "Taishang Wuji Mysterious Sutra", the more old the Dan furnace, the more medicinal materials it may have refined.

At the same time as refining medicinal materials, some of the medicinal properties of these medicinal materials are inevitably lost, and a very small part of the lost medicinal properties affect the flame of refining medicinal materials.

This effect is very insignificant, but after a long time, the accumulation of time, this medicinal property is slowly reflected, so that the flame of the Dan furnace has changed.

This is how the legendary Tushi Fire gradually evolved from the ordinary alchemy fire!

The changed flame has a unique effect in refining medicinal materials, which can more effectively refine the medicinal properties of medicinal materials and give full play to the true effect of medicinal materials.

Without further ado, it is said that Chen Xiaobei lit the fire, and then sent the herbs collected by Ning Zhiqing to the furnace one by one to be calcined, and when the impurities were removed, they were put aside.

When all the herbs had been calcined, he added enough rootless water to the furnace, boiled the water, and then, in order, at regular intervals, he threw some herbs into it, and after about five days, all the herbs had been sent into the furnace.

After that, he devoted himself to the fire.

The next thing is to boil slowly, if you are too impatient, it is very likely to lead to the destruction of the whole furnace.

However, he was not in a hurry, but Du Junfeng was in a hurry, fanning the fire day after day, but there was no sign of alchemy, which made him irritable.

Especially after a month of alchemy, Du Junfeng's impatience was already written on his face, and he kept asking Chen Xiaobei when he would be well, and it seemed that he couldn't wait.

Chen Xiaobei saw his impatience, so he said to him coldly: "If you expect this furnace pill to be destroyed, then continue to be so impatient, maybe if you are not careful, the fan is too hot, and this furnace pill will be burned!"

When Du Junfeng heard this, he remembered Shen Yingmeng's comfort, and the impatience in his heart suddenly subsided, and he began to wait slowly.

During the time when they were concentrating on alchemy, the days passed day by day, and there was still no news from the outside in the illusion phone.

In this closed secret realm, they can't send messages to others themselves, so they can only hope that after the people outside open the blockade of the secret realm, they rely on the great divine power to send them a message and tell them the location of the meeting.

They didn't know what had happened outside, but after a long time, they weren't as hungry for outside help as they had been. Anyway, the place where they live is quite safe now, and the Tianyi Life Renewal Pill has not yet been refined, and Shen Yingmeng's injuries have not healed, and it is not suitable for long-distance travel.

When it came to Shen Yingmeng, because Chen Xiaobei had sucked out the yin and evil qi in her body before, coupled with the constant supply of Ning Zhiqi Pill, her body did not continue to deteriorate.

After three months of this, a medicinal fragrance was born in the Dan furnace.

After Du Junfeng heard it, his expression perked up, and he showed an excited expression on his face, looked at Chen Xiaobei and said, "Is it that the pill is about to be completed?"

At this time, Chen Xiaobei's expression became very solemn, and he shouted: "Keep fanning, don't stop!"

This furnace Tianyi Life Continuation Pill is indeed about to become, but it has also reached the most critical moment, if there is a little bit of a difference at this time, this furnace pill can be regarded as ruined.

As soon as Du Junfeng heard his scolding, he hurriedly sat upright, not daring to be distracted anymore. If it was because he destroyed this furnace of elixir and caused Shen Yingmeng to die, then he would regret it for the rest of his life.

At this time, the pill has taken shape, no longer needs to be warmed, and it has begun to change from simmering to martial fire, and the medicinal fragrance outside has become more and more intense, which makes people feel refreshed.

The pills in the Dan Furnace floated up, slowly rotating, not consistent, but there was a strange rhythm in them on the whole.

At this moment, the medicinal fragrance in the alchemy room had reached a level that was difficult to conceal, and began to escape outside the room, and even gradually spread to the entire mountain.

Colorful mist appeared in the sky, and there was a faint fairy music sounding, people were in it, what they saw in their eyes, what they heard in their ears, they were all beautiful, as if they were in a fairyland!

The vision of Tianyi Life-Continuing Pill has finally appeared!

And there were also several mana fluctuations in the distance, which were rapidly approaching!