There is no problem with all the steps, and there is no problem with the proportion, so where is the problem?

Lixia was a little distressed, and the moment he lowered his head, his eyes unconsciously fell on the flint stone at the bottom of the Dan furnace, and suddenly remembered something, and muttered to himself: "Could it be a matter of heat, the firepower is too great, so the firepower is too small, isn't it okay?" It is said that it generally takes half an hour to refine a furnace of Bigu Dan, and the time of this furnace is obviously exceeded." ”

Lixia pursed his lips and smiled, feeling that he had found the reason for the failure, and was a little excited, meditated again to recover to the best state, reopened the furnace, and slowly increased the firepower in turn, striving to find the most suitable firepower.

Finally, after two more failures, when the furnace was opened for the sixth time, after waiting for about two quarters of an hour after dividing the Dan, a faint medicinal fragrance wafted out of the Dan furnace.

Lixia immediately pinched the trick with both hands and shot out two spiritual powers, one extinguished the spiritual fire, the other opened the Dan furnace, and used his divine sense to control and take out the pills in the Dan furnace, and there were actually six round yellow-brown pills lying inside.

After experiencing five failures, he was finally able to successfully refine the pill, Lixia was so happy that he took out the pill and took it in his hand to look at it carefully for a while, it seemed to be a little different from the Bigu Pill that his senior sister ate.

First of all, in terms of color, the Bigu Dan eaten by the senior sisters is beige, which is lighter than the color refined in Lixia, but the Dan fragrance is stronger, and the color of these pills refined by themselves is a little yellowish-brown, and the Dan fragrance is very light and almost covered by the taste of medicinal materials, which shows that the quality of the pill is not high, and there are too many erysipelas, but fortunately, it is finally Chengdan.

On the day of Lixia, he simply didn't do anything else, and put it all on the alchemy, first find the best feeling, and then make up his mind, put the six pills in the jade bottle and put them aside first, and mark them well.

After meditating and pranayama to the best state, the furnace was reopened, this time the firepower was slightly stronger than the last time, and the time to become a pill was a little shorter than last time, it was still six pills, and the color was a little lighter than last time, and the fragrance of the pill was a little stronger.

On this day, Lixia opened the furnace ten times, in addition to the first five failures, the last five times were all successful, and the quality of Cheng Dan was better than the previous one, and the quality of the last furnace of Dan was already beige, which was almost the same as the quality of the Bigu Dan eaten by the senior sisters.

Since the sisters have a storage bag, they no longer cook every meal, usually each time they can eat for ten days and half a month, packed in the storage bag, when to eat directly take it, anyway, the time in the storage bag is static, the cooked meal is hot when it is put in, and it is still hot when it is taken out, and it can be eaten directly, which is very convenient.

In the following time, Lixia opened the furnace every day to refine three furnaces of Bigu Dan, and after a month, all the materials of Bigu Dan were used up.

The next ninety materials only failed five times, Lixia was full of ninety pills, each furnace of Cheng Dan had at least five pills, and the most furnace actually had twelve.

The condition is also getting better and better, and Lixia has placed all the pills he has successfully refined together into three categories, with colors ranging from dark to light.

Pills are not only divided into grades, but also into grades. The grade corresponds to the cultivation, and the grade corresponds to the quality.

For example, the pills used by disciples in the Qi refining period are generally first-order pills, the second-order corresponds to the early stage of foundation building, the third order corresponds to the middle stage of foundation building, the fourth order corresponds to the late stage of foundation building, the fifth order corresponds to the early stage of Jindan, the sixth order corresponds to the middle stage of Jindan, the seventh order corresponds to the late stage of Jindan, the eighth order corresponds to the early stage of Yuan Infant, the ninth order corresponds to the middle stage of Yuan Infant, and the tenth order corresponds to the late stage of Yuan Infant.

At the same time, alchemists are also ranked, and they can refine most of the pills of this level, and the success rate is more than forty percent to be able to obtain the title of alchemist of this level.

However, there are also advantages and disadvantages of alchemists of the same level, and the distinction between advantages and disadvantages is based on the rate of Cheng Dan and the appearance of Cheng Dan.

The quality of the pill is divided into the lower grade, the middle grade, the upper grade, the best grade and the holy product, which is the so-called five grades of the pill.

There are generally two ways to distinguish the grade of Dan medicine, by color and smell.

Generally, the purer the color, the higher the grade, such as Bigu Dan, the lower grade is yellow-brown, the middle grade is beige, the upper grade is milky white with a little yellow, and the best is the smooth and transparent white, and there will be three shallow Dan lines. And the holy product only exists in legends, and it is said that there will be nine Dan patterns on the holy pill.

But there are limitations to distinguishing by color, that is, you must have seen all the grades of this elixir and remember their colors, otherwise it will not be completely certain if there is no contrast.

Then there is no such limitation if you distinguish by smell, the taste of the Chinese herbal medicine is big, the flavor of the Dan is small, it is the next grade, the taste of the medicinal materials is as big as the Dan fragrance, it is the middle grade, the Dan fragrance completely overshadows the taste of the herb itself, it is the top grade, and the taste of the herb itself can hardly be smelled, and only the one that can smell the Dan fragrance is the best.

And the legend says that no matter what the level of the holy pill is, its incense can be fragrant for ten miles, making people smell it and indulge in it.

However, the rate of pills refined by ordinary alchemists generally does not exceed fifty percent, and the quality is mostly low-grade, medium-grade, and occasionally high-grade.

And excellent alchemists are generally middle-grade and high-grade, and occasionally there are top-grade and low-grade, and even excellent alchemists can sometimes challenge the refining of pills beyond their own level. Because an excellent alchemist generally has a stronger divine sense than ordinary people.

Because what determines the quality of Cheng Dan is whether the impurities are removed when the pill is refined, the less impurities, the better the quality of Cheng Dan, and the strength of the divine consciousness determines whether the impurities can be removed.

Lixia sorted all the Bigu Dan he refined, and after comparing them, he found that he found that there were a total of 756 Cheng Dan of this 100 materials, 368 of the Lower Grade Dan, 272 of the Middle Grade Dan, and 116 of the Upper Grade Dan.

The quality of the pill is different, not only the content of erysipelas is different, but the efficacy is also different.

You don't need to eat for 10 days after taking a low-grade Bigu Dan, you don't need to eat for 20 days after taking a medium-grade Bigu Dan, you don't need to eat for a month after taking a high-grade Bigu Dan, and you don't need to eat for 2 months after taking a top-grade Bigu Dan, and the effect increases exponentially.

Lixia thought that he now had so many Bigu Dan, even if he didn't have anything to eat for more than thirty years, he couldn't starve to death, and he was happy in his heart (he couldn't help but complain, you are still like this after cultivating immortals, it's really useless).