"The effect of this bottle of medicine is good, the physical fitness has improved a lot, and the eyesight has also evolved to the point where it is beyond ordinary people, the side effects are very small, and I only weakened for about half a day after taking it. Sylvia put the empty bottles left over from the tested potions on the table, and then introduced seriously: "This bottle of potion has the best effect, and the physical fitness has improved the most, which can be comparable to the Templar who has undergone a divine consecration ceremony, but the side effects are also very large, and some mutated tissues have appeared on the user's body, but fortunately it is hidden." The effect of the other bottles of potions is very average, although the physical fitness has been improved after use, but the improvement is not particularly large, and the potion needs to be eaten in large quantities after use, and there is a danger of losing reason during the eating process, and even signs of attacking people, after eating a lot, reason will recover, but the personality will also change somewhat. ”

"The main part of these potions is the blood of the same mutant monster. Leo looked at the bottle on the table, with a trace of doubt on his face, and said: "It's just that the auxiliary materials that are matched with blood are different, but their medicinal effects are so different, it's like changing a potion, it seems that the power that caused the uncontrollable mutation of the beast also remains in the blood of the monster, and affects the effect of the potion." ”

"What then?" Sylvia said with a frown after hearing Leo's words.

"There are two schemes, one is to continue to use this medicine, but before selling, divide the effect of these medicines, formulate several qualities, and pay more money to naturally use the effect well, with small side effects, and with less money, you can only use the kind of side effects with large side effects and low effect. Leo seemed to have expected this, so he quickly gave two answers, saying: "The other plan is not to use monster blood as the main medicine of the potion, and use other materials, in that case, it will increase a lot of additional costs, and it is also very troublesome to make, it is impossible to make a qualified potion without a very skilled alchemist or pharmacist." ”

"Is it easy to make this potion made from monster blood essence now?" asked Sylvia, confused.

"It's very simple, I have already taken into account the problems of mass production and production when I developed it, and especially simplified the production method, even an ordinary person can make it. Leo spoke, and ordered Sylvia into a small room next to him.

I saw that there were some various equipment made by Leo in the recent period, and Leo came directly to a device that looked like a food box, opened the upper lid, and then took out a metal test tube from it, and took out a bottle of monster blood from the side that was ready to be tested, poured the test tube to the full, and then inserted the test tube into its original position, closing the lid of the food box.

Later, he was seen to start a small steam engine next to the food box, and the gears of the steam engine immediately drove the food box to rotate rapidly, until a few minutes later, he stopped the steam engine, and after the food box stopped rotating, he took out the test tube, handed it to Sylvia, and motioned for her to take a look.

Sylvia opened the sealing plug of the test tube and looked inside, and found that the blood that should have been very viscous had now turned into a clear liquid, and the viscous blood had sunk to the bottom and became more viscous.

"Has blood been extracted and refined so easily?" Seeing this scene, even if Sylvia didn't know much about alchemy, she knew very well what was going on, and immediately asked in surprise.

In Sylvia's memory, the life school scholars of the medical school recruited by the Dodd Group and the blood wizard Lawrence often need to refine some monster blood or liquid materials, and the methods they use are very cumbersome and complicated, and the time consumed is also very long, and it takes half a time to achieve the effect of refining at the shortest, and even if there is a little mistake in the refining process, the previous efforts will be wasted.

And now Leo has completed the refining of blood in such a short time, and the refining process is so simple, as Leo said, even an ordinary person can operate, and more importantly, Leo's refined blood is clearer than the blood refined by the blood wizard Lawrence through the secret method, although she doesn't know what effect this has on use, but according to common sense, the clearer it is, the less impurities, and the stronger the effect will naturally be.

"It's a centrifuge that can be used to refine liquid-based materials. Leo gave a brief introduction to the centrifuge he had renovated and detailed the functions of each component.

If Leo wanted to make a centrifuge with the same effect, I am afraid that he would need a steam oven the size of a room, and the gears and other components would also need to be made individually, and the effect would not be as good as the current one.

However, as the world began to change, the efficiency of various mechanical parts could be doubled or even more than ten times while the power consumption remained the same, allowing Leo to miniaturize and modularize this centrifuge.

While listening carefully to Leo's introduction to the centrifuge, Sylvia also had other uses for this centrifuge in her mind, and felt that with this thing, perhaps the medical department she had been planning for a long time could be successfully established, and the people of the Life School did not have to stay in the laboratory of Bran Forest, wasting the knowledge in their brains in vain.

"With this centrifuge, how much does it cost to make that kind of physique potion that uses monster blood as the main raw material?" Sylvia asked with concern after listening to the introduction of the centrifuge.

Leo reported a number.

"What about potions that don't use the blood of this monster?" Sylvia asked again.

Leo gave another estimate.

Hearing this number, Sylvia couldn't help but be silent for a moment, this number was nothing in her opinion, but in the eyes of ordinary people, it was definitely an addition, and the difference in the cost of the two potions was more than a hundred times.

However, think about it, there are so many mutated monsters outside the city, and every time the monster tide dies outside the walls of Odolin, the monster corpses are piled up, and it takes several days for the people of the city to completely remove them, so the blood and organs of these monsters are cheaper than beasts, and only a few monsters with extraordinary power have special value.

And with those herbs or ores with special effects, it is difficult to find them in the market, and you need to go deep into the forests and mountains full of monsters to find them, in the past, when there was no threat of monsters, it was already very difficult to find these materials, and now a large number of mutated monsters are entrenched in this kind of place, and any time you enter the forests and mountains is a test of life and death, the price is naturally high.

Without much thought, Sylvia chose to continue using monster blood as the main ingredient for her potion, knowing full well that while it was safer to use other materials, the price was too high for the general public to use in the potion of that material, which would go against their earlier plans.

Although there will be uncertainty about the efficacy of the potion made from the blood of mutant monsters, if when the drug is refined, through some methods to distinguish the level of efficacy, the quality of the side effects, and divide the potion into several grades, the potion that is too poor or has too many side effects will be discarded, even if it will cause some cost increases, but compared to the kind of potion that needs to be refined by special personnel and the material cost is high, she can still make a lot of money, and it can also be mass-produced.

After that, Sylvia discussed things with Leo, and in a few days sent someone to learn from Leo how to make this monster blood potion, and by the way, he also learned how to make and assemble centrifuge parts.

After discussing all kinds of things, Sylvia was about to leave and come back in two days, but when she was about to get out of the pit, she suddenly thought of something, turned back, and said to Leo: "I forgot one thing, the long night period is coming in a few days, according to the news released by the shamanic church, this long night period will be about twenty days, and there will definitely be a monster tide at that time, don't you want to see how Odolyn can resist the monster tide? ”

The long night period is a unique phenomenon in the Moisan continent, at the beginning only appeared in the depths of the wasteland, almost every year for a period of time in some areas of the wilderness will fall into the dark night, up to a few days or even more than ten days, and the strange thing is that the long night period will only occur in a specific place, once you leave that place, it instantly becomes daytime, so in the long night period there will be a step forward is the night, and a step back is the wonder of the day.

However, for those whose lives are affected by the Long Night, such a spectacle is a big concern for them every year, because in the realm of the Long Night, all living beings will be invaded by a mysterious force to a greater or lesser extent, which does not allow people to gain any mysterious power, but will affect the mood of others, making those affected become extremely belligerent and violent.

Although the Long Night Period is so dangerous, before the world changes, the Long Night Period occurs in the depths of the wasteland, and shamanism is often able to predict the location covered by the Long Night Period and Fan Wei, and notify the tribes over there to leave in advance, so the Long Night Period is not a particularly big trouble in the wasteland.

However, with the mutation of the world, the coverage of the Long Night Period is also expanding rapidly, and the edge of the range is also expanding to the outside, gradually out of the wasteland, into the civilization of the Moissanite continent.

Five years ago, the Long Night Period also included Odolin, and also let the residents of Odoline see how bad the bad effects of the Long Night Period were, not to mention the monsters outside the city that were controlled by violent thoughts, the city received the influence of the Long Night Period, the personality mutated, and the residents who became extremely violent gave the defenseless Odoline a heavy blow, and the city of Odolyn was in the monster tide at the same time, there was also a riot among the people at the bottom of the interior, and the riot was so big that it affected the fortifications on the city wall, and the city of Odolyn was almost breached.

Later, the city of Odolyn paid special attention to the time of the long night every year, and made various preparations, in addition to adding a large number of patrol guards and city defense troops, the city government would also distribute a potion to everyone in the city to resist the mysterious infectious force that appeared with the long night, this potion will make people's personality not affected by external forces become extremely violent for a period of time.

However, these are only some information that can be made public about the hidden dangers of the long night period, and there are also some information that cannot be made public for the public to know, and these materials all mention that some unpredictable strange things will happen after falling into the long night period, and the specific things Leo did not say much about the information he saw.

After recalling the relevant information for a while, Leo asked suspiciously, "I remember that the Long Night Period should not happen for a few months, why did it suddenly appear now?"

"I don't know about this, but the shamanism has already issued an announcement, and it shouldn't be fake. Sylvia said seriously.

Shamanism deals with the long night period all year round, and has sorted out a very complete set of secret methods, which can accurately know the appearance time of the long night period, and the error is less than one day, so once the shamanic church issues an announcement, then it means that the long night period is really coming.

The reason for the appearance of the long night period has always been a mystery, even the shamans who have studied the long night period for many years are at a loss for this strange phenomenon, but Leo feels that the so-called long night period should be related to the movement of celestial bodies, it should be a certain time of year, a satellite in the sky is just between the sun and a certain area of the Moisan continent in the world of Velon, which causes the appearance and disappearance of the long night period, some like a solar eclipse,

As for why the coverage of the long night period will be expanded, this explanation is also very simple, that is, the huge occlusion satellite is approaching the world of Velon, and its shape is getting bigger, so the covering area is naturally larger.

But such a statement obviously does not explain other things, such as the creatures within the range of the Long Night becoming violent and aggressive, and the appearance of all kinds of strange things in that area that even the Church of the True God and the Shamans cannot figure out.

"You don't have to worry. Seeing Leo frowning, Sylvia thought that he was worried about his safety during the Long Night, so he said: "It's not the first time I've encountered the Long Night, the power of the Long Night won't have any effect on me, and as long as I don't stay alone, there are many people around, and I won't encounter anything weird, you don't have to worry about this, on the contrary, you may stay here alone at that time......"

Leo gestured to Sylvia, shook his head with a smile, and said, "It's okay, I just wanted to see what the secrets of this famous long night are." ”

Sylvia looked at Leo who was eager to look at his clothes, and couldn't help but raise her eyebrows, and warned: "Just look at it, you don't want to disappear for another twenty years, if that's really the case, I won't wait for you for another twenty years." ”

Hearing this, Leo smiled helplessly, nodded and made a promise to Sylvia.