Unable to break through the prohibition on the token and figure out the mystery of the token, Li Zhe temporarily lost interest in the token.

Tossing the token aside, he picked up the golden booklet. On the cover of the booklet was written the words "Dan Dao Introduction", Li Zhe opened the booklet and read it carefully.

The content of the booklet mainly talks about the basic knowledge of refining pills, and at the end of the booklet, a few pills are attached, and the introduction is all pills that have no effect on the monks.

Of course, for mortals, it should be a panacea for all diseases.

The principle of refining the elixir is very simple, that is, according to the formula of the elixir, prepare all the medicinal materials, and then put the medicinal materials into the Dan furnace and calcine them with spiritual fire, and use the fire power to remove the unwanted ingredients in the medicinal materials, and purify them into an elixir liquid that only contains the corresponding medicinal effects.

When all the medicinal materials in the formula are purified into elixir liquid, then all the elixir liquid is dissolved together, and the water is quickly removed with fierce fire, and it is condensed into elixir.

It should be particularly pointed out that the so-called medicinal materials do not specifically refer to all kinds of medicinal herbs, and the world's natural materials and treasures may be used in medicine.

The principle of alchemy is simple to say, but it is extremely difficult to operate.

First of all, the purification of medicinal materials is an extremely delicate process, and the slightest mistake will be wasted, requiring the alchemist to monitor the state of the medicinal materials with a strong divine sense, and use skilled fire control skills to adjust the size of the fire, too big or too small is not enough.

Secondly, the characteristics of medicinal materials in the world are different, and the length of time it takes to purify them into elixir liquid is also different, and even some medicinal materials are very different from each other. It is extremely difficult to achieve the simultaneous purification of all the medicinal materials in the formula.

Finally, from the moment the elixir liquid is purified, it will continue to lose its medicinal properties, the medicinal effect will continue to weaken, and at the same time, it will be polluted by the outside world, and the impurities in the elixir liquid will continue to increase, and it will lose its effect if it is stored for a long time.

Generally speaking, the elixir can maintain its effect for a few tens of breaths.

In just a few tens of breaths, it is difficult to control all the medicinal materials in the Dan furnace to complete the purification of the elixir liquid at the same time, and finally condense it into the elixir. Moreover, with the increase in the types of medicinal materials used, the difficulty of refining will increase dramatically.

From this, it can be seen that one of the biggest difficulties in the technology of refining elixir is the control of the time difference between the purification of the elixir liquid. The time difference between the purification of the elixir liquid of all the medicinal materials in the Dan furnace directly represents the level of the alchemist, and the smaller the time difference, the higher the level of alchemy, and the higher the quality of the refined elixir.

If this time difference is greater than a certain critical point, the refined pill will become a waste pill that cannot be taken because the medicinal power is not enough or the impurities exceed the standard.

If you want to achieve precise control of jet lag, you have to mention the two most basic conditions for becoming an alchemist, one is a strong divine sense, and the other is superb fire control skills. If you can't meet these two conditions, it is difficult to even purify medicinal materials, and if you want to become an alchemist, it will be a pipe dream.

In order to minimize the time difference between the purification of various elixir liquids, the most basic method of the alchemist is to stagger the time when the medicinal materials enter the Dan furnace. According to the time it takes for each medicinal material to be purified into an elixir liquid, the alchemist puts this medicinal material into the Dan furnace to refine it according to the pre-calculated time point. The time-consuming medicinal materials are first purified in the Dan furnace, and the time-consuming medicinal materials are processed to a certain progress before being put into the Dan furnace, so that the artificial manufacturing time difference makes the time difference between the refining of the elixir liquid of various medicinal materials roughly controlled in a relatively short time.

The alchemist then uses his powerful divine sense to monitor the purification progress of various elixir liquids, temporarily isolate the medicinal materials that are ahead of the progress with his divine sense, or fine-tune the amount of fire through superb fire control skills, and do the most exquisite time control to further narrow the time difference.

It's just that this method is still more effective when refining low-grade pills with fewer materials, but when refining high-grade pills with more types of medicinal materials, the adjustment effect is very small. It is conceivable that it is difficult to adjust the amount of fire power when hundreds of medicinal materials with different refractory properties are heated together.

In order to increase the success rate of refining pills, alchemists invented more advanced alchemy. The furnace is divided into two areas, and two flames of different intensities are used to purify the medicinal materials, so that the medicinal materials can be divided into two categories, and the medicinal materials with similar refractory properties can be purified in one area. Doing so increases the success rate, but the requirements for the alchemist themselves are greatly increased. Even among monks, not everyone can do two things at once, and perfectly control two flames of different intensities.

Two flames are not the highest level of alchemy, and there are alchemy masters who can control three flames, four flames, and so on. The highest level of legend is to control nine flames at the same time, but this kind of person is extremely rare. Those who can control the five flames are already great alchemy masters.

The alchemist records the best refining process of his refining of a certain elixir for future generations, and this is the Dan Fang. The pill is not just a list of medicinal materials needed to refine a certain pill, these are not of much value, and it is almost impossible to directly refine the pill from the recipe. In fact, apart from some secret elixirs, the recipes of ordinary elixirs were not a secret among alchemists. The most essential part of the Danfang is the time point at which each medicinal material is put into the Dan furnace in the alchemy process and the amount of firepower at each stage, which is where the value of the Danfang lies. In particular, some secret pill recipes passed on by senior alchemists, because they have added a lot of personal experience, can increase the rate of becoming a pill, and their value is higher.

Alchemist is a profession that attaches great importance to the accumulation of experience, even if it is completely refined according to the records of the Danfang, it cannot guarantee the success of all, this is because the conditions of alchemy are different every time, the quality of the medicinal materials used, the external environment, and the alchemist's own state may affect the success rate. In order to increase the success rate, it is necessary for the alchemist to make very small adjustments according to the actual situation, and at this time, it can only be the experience and intuition of the alchemist. High-level alchemists are simply slowly cultivated with a large number of medicinal materials, except for some sects that specialize in cultivating the Dan Dao, only large sects have the ability to cultivate this kind of person.

The minimum quality requirement of qualified pills is that the content of active ingredients is more than 70%, and the content of impurities is less than 30%. The quality of the pill does not meet this standard, the side effects are very large, and it is not suitable for monks to take, so it is called a waste pill. There are also some casual cultivators who can't afford ordinary pills and take the risk of taking waste pills when they hit the bottleneck, which can also produce some help, but the damage to the body is also very great.

If the medicinal power of an elixir can reach more than ninety percent, then its value is obviously different from that of ordinary elixirs, which is called a high-quality elixir, and its value is dozens of times that of ordinary elixirs.

The medicinal properties of the pill are extremely pure, reaching more than ninety percent, and at this time, the pill will produce an unexplained qualitative change, and the medicinal power of the pill will be at least doubled.

The elixir contains some impurities, and after the monk takes the elixir, these impurities will produce some toxins called erysipelas in the monk's meridians. The vast majority of erysipelas can be forced out of the meridians through exercises, but there are still a very small amount of erysipelas left in the meridians, and erysipelas will accumulate to a certain extent and will attack, resulting in many side effects.

The situation of the pills is very different, the erysipelas produced are very small, and the ones that can remain in the human body are even less so that they can be ignored, and there is no need to worry about the accumulation of erysipelas when taking a large amount. However, this is not the greatest value of the imported pills, after all, the output of the imported pills is extremely low, and no one can eat them as a meal, so there is no need to worry about eating too much.

The greatest value of the Entering Pill is that it has a huge help for the monk to break through the bottleneck of cultivation, and the Entering Pill that increases the spiritual energy is pure because of its medicinal properties, so it can release extremely pure spiritual energy in the meridians after taking it, and the auxiliary impact on the bottleneck has the effect of getting twice the result with half the effort.

It's a pity that refining the elixir in and out of the pill is something that can be encountered but not sought, because it is only possible to refine it when all the elixir liquid is in the best state and condensed into a pill. The time for the elixir liquid to remain in its optimal state is extremely short, often within ten breaths, and the medicinal power will drop greatly after ten breaths. It is almost an impossible task to control the purification of the elixir liquid of all medicinal materials in ten breaths, in this extremely short period of time. Especially those high-grade pills, hundreds of medicinal materials had to be dispatched at every turn.

If you want to refine the in-out elixir, you first need the alchemist to have an extremely high level of alchemy, and be able to maintain the average level of refining a certain elixir at an extremely high level, close to the level of the in-grade elixir, and then it can be refined by chance and by chance. Therefore, the incoming pills are basically works of luck based on strength and experience, and it is extremely difficult to refine them in batches. Generally speaking, the more advanced the pill, the more types of medicinal materials are needed, and the lower the possibility of refining the pill in and out of the pill. For example, if you ask a high-level alchemist who controls more than five flames to refine the Entering Cultivation Pill, he can occasionally achieve success, but if you ask him to refine a higher-grade Entering Pill, the success rate cannot be guaranteed.

According to the quality of the pills, they can be subdivided into upper and lower products. The purity of the high-grade pill is higher, and of course the value is also higher. The top-grade pill is basically an elixir whose efficacy is infinitely close to purity, which can increase the success rate of the monk when he hits the bottleneck by at least two percent, and it is simply a priceless existence.

After reading these contents, Li Zhe closed the booklet and took it back into the storage bag along with the spirit stone and token. Li Zhe understands very well that he can only taste the art of alchemy, so it should be regarded as a long insight, increase his knowledge, and never go deeper.

The way of alchemy is broad and profound, and if you want to achieve something, you must invest a lot of energy in research. His spiritual root qualifications are inferior, and the efficiency of the Yin and Yang Zhou Tianxuan spiritual skills he cultivates is also extremely low, and he is afraid that he will not be able to keep up with the footsteps of his junior disciples when he cultivates with all his strength, so how can he have the spare strength to learn these things.