Even if it is an alchemist who specializes in this way, after years of studying this way, it is just that he has made achievements in a specific few kinds of pills, so you can imagine the difficulty of this way. However, in terms of straightforwardness, the elixir is actually very easy to understand, which is nothing more than the use of high-temperature furnace fire to dissolve and condense various different energies together, turning them into energy that can be directly consumed and absorbed by monks. The process of alchemy is actually the process of removing those impurities and neutralizing the violent medicinal properties. In this way, it also leads to the essence of the elixir, that is, it needs an originally huge and amazing energy as the main ingredient, and finally turns into the power of the elixir.

Zhuji Dan is a kind of auxiliary pill, it stands to reason that this kind of pill does not have high requirements for the main material, but because between practicing Qi and building the foundation, it is a process of quantitative change to qualitative change, and in the process of impacting the bottleneck, the natural energy required is extremely amazing.

In this way, the huge and amazing external force is the stronger the better, and as the main material of Tsukidan, it is naturally more and more important.

In ancient times, the main material for refining Zhuji Dan was to choose a thousand-year-old Heavenly Spirit Flower, but with the passage of time, such spiritual materials that needed to grow for thousands of years were in short supply, until they were completely extinct. The subsequent alchemists tried all kinds of things, and really found the main material that could be replaced, that is, the inner pill of the demon beast.

It's a bit cruel to say, the demon beast is actually no different from the human monk, born to raise, suck wind and drink dew, after countless years, it can be cultivated, and the demon pill in its body is naturally the essence of its mana, it is a thing that has been cultivated and diligent for countless years, especially the demon beast that can build a foundation, it takes a long time to gradually open up the spiritual wisdom, which can be described as a bittersweet end.

But the inner dan of this kind of demon beast, used to replace the thousand-year-old Heavenly Spirit Flower, is really suitable.

Although the demon pill is overbearing in spiritual power, the energy contained in it is amazing, especially the process of building the foundation, which is a domineering process of breaking first and then standing, so the demon pill is refined as the main material to become the foundation building pill, and the effect is not weak. Pity those naturally grown demon beasts, it was for this reason that they were slaughtered, and even a great war between human monks and demon beasts broke out because of this, but on the way to cultivation, human monks naturally have an advantage, and the cultivation realm is far beyond that of demon beasts, and naturally they have become the final winners.

And after so many years, although the West Pole Continent is full of forests, the demon beasts above the foundation building period are becoming more and more rare, and even the demon beasts connected to the foundation building period have been slaughtered, and thousands of years ago, the main material problem of the foundation building pill has been highlighted again. In desperation, the eyes of the human monks are on the body of the sand beast and the ghost of the underworld, but compared to the demon beast, the strength of the sand beast is really strong and amazing, and it is really not easy to kill the demon and take the pill, and even every hundred years, the beast tide breaks out, and a large number of monks will die under the hooves of the sand beast, which can be described as a heavy loss.

Coincidentally, at such a time, the discovery of the ancient repair site of Xuanming Cave also caused the shaking of the West Pole Continent. Subsequently, after some open and secret battles, this place was included in the three major sects, and it became an important place for the three major sects to collect the main materials of Zhuji Dan, and in its self-contained space, there were a large number of native demon beasts, and even the existence of heavenly spirit flowers in some dangerous places, which made the three major sects pay attention to the abnormal. The unexpected appearance of the Xuanming Cave also greatly alleviated the material problem of Zhuji Dan, and made the three major sects breathe a sigh of relief at the same time, and it is precisely because of this that this place has become a heavy place guarded by the three major sects. Line

Because of the space barrier, there is a chance to enter this place every ten years or so, so that entering it during this time to kill demons and take pills has also become the most important thing for the three major sects, and every disciple who can enter the Xuanming Cave is a strong person who has won through layers of selection and rounds of competitions.

It's no wonder that disciples in the sect such as Senior Brother Zhang and others know so much about the matter of the Xuanming Cave, just imagine, if the disciples in the Qi cultivation period want to impact the foundation building period, it is absolutely impossible to do it without the foundation building pill as an assistant. And with the preciousness of this pill, where can ordinary means obtain it? A bottle of ordinary pill to enhance cultivation is the astonishing price of a medium-grade spirit stone, you can imagine how amazing the sky-high price that can be sold for an elixir like Zhuji Dan. The success of foundation building is not only as simple as improving cultivation, but also greatly increasing the longevity, which is an amazing thing.

Thinking of this, Shen Tong couldn't help but let out a long breath, looked up at the top of the black stone cave, and when he heard Senior Brother Zhang say this, he was also eye-opening. I only heard Senior Brother Shi Chang say it once before, but I didn't have any intuitive feeling, but now it seems that it is really quite amazing! It is no wonder that there are so few monks in the foundation building period, judging from the competition for the foundation building pill, it is possible to know the risks contained in this matter, not to mention the risks in the Xuanying Cave, it is an unimaginable difficulty to stand out from the sect and obtain the qualification to enter. You must know that there are thousands of cultivators in the Qi cultivation period in Heavenly Star Valley, how difficult is it to fight a bloody path out of it?

Shaking his head, Shen Tong also forced himself to leave these things behind, there are still about 2 years before the opening of the Xuan Ying Cave, and his cultivation at this time is only the ninth layer of the Qi cultivation period, whether it is time or cultivation, it is obviously still a little bit behind, so it is obviously too early to worry about this matter under such circumstances. It's better to go with the flow, and then look at the situation, if the cultivation stops there, I'm afraid that no matter how much you understand, it will be in vain.

Closed his eyes and pondered for a while, he tried his best to let himself leave these things behind, his divine sense looked inside his body, and couldn't help but smile bitterly, this time he was chased and killed by the sand wolf for three days and three nights, although he was lucky to pick up a life, but it was really a staggering loss, and the strength in his body was only one-tenth or twelve at the moment, and it was about to be exhausted. This is also the amazing condensation of the spiritual power in his body, otherwise, how can he withstand such a long period of consumption, I am afraid that he will not be able to hold on to let the sand wolf be killed for a long time.

Thinking of this, he couldn't help but move, and then a small pale yellow bead appeared in his hand, this bead was only the size of a fist, and the light on it flashed slightly, looking extraordinary, and it felt a little hot in his hand, which made people feel deeply comfortable. This thing is naturally the sand beast's inner dan, when Youxuan trapped the sand wolf before, he took the opportunity to sweep away the demon beast Neidan that was killed by Youxuan, and at this time there were more than ten pieces stored in the Ruyi bag. This thing is the only gain from his adventure, and it can be regarded as a little compensation and comfort!

The function of this pill is to refine the elixir to improve mana cultivation, and if it is sold in the Zongmenfang Market, it can also be sold at a good price, but Shen Tong has other ideas, which of course comes from the mysterious bead hanging around his neck. In the Storm Mountains before, he had also obtained the Yin Netherworld Nucleus, and when he tested the efficacy of the small bead, it could be completely absorbed by the small bead, and in his mind, the demon pill seemed to be no different from the nucleus, and it should also be absorbed.

Sure enough, in the blink of an eye, there was a coolness coming from the small bead on the neck, and then I saw the sand beast Neidan in the palm of my hand dissolve at a speed visible to the naked eye, and completely lost its trace as if it disappeared out of thin air. And soon, there was a warmth from the beads, and the pure energy that returned to the sea of qi instantly made up for most of the previous mana loss, and even made its extremely tired body full of physical strength, such an amazing change is really wonderful, if there are others here, I am afraid that I will be taken aback.

In the face of such an astonishing change, a black figure immediately appeared in front of Shen Tong, without warning, extremely weird.