Hu Lei did not answer Mu Ying directly, but asked rhetorically: "Then do you think that the first-grade Bigu Dan should be willing to be refined by several alchemists?" ”

Mu Ying was just stunned, and then reacted.

Although the first-grade alchemist is the lowest-grade pill, except for the first-grade alchemist, I'm afraid no one is willing to refine it, after all, it is the most basic pill, if a high-grade alchemist has time, he must want to refine a pill that matches their grade or even a higher grade, how can he be willing to refine a low-grade pill? Even if the price of a high-grade Bigu Pill would be higher, as a high-grade alchemist, how could he take that bit of spirit stone in his eyes?

In this way, there is only one alchemist who can refine a first-grade Bigu Dan. And the first-grade alchemists are the lowest-grade and worst-level people among the alchemists, and the pills they refine should be more inferior and medium-grade, and less high-grade.

And it is also Bigu Dan, in comparison, the high-grade one is ten times more expensive than the low-grade one, but the effect is almost the same, basically ten low-grade Bigu Dan can last a few days longer than one high-grade one. An inferior tube lasts for 10 days, and a high-grade tube lasts for three months, so that ten inferior Bigu Dan can be used for 100 days, while a high-grade one is 90 days, but the price is higher. So after such calculations, it is no wonder that everyone is willing to buy the inferior ones.

But...... Mu Ying suddenly thought that she remembered that the 36 furnaces of pills she refined, but all of them had removed all the impurities, so could it be that those 36 furnaces were all high-grade Bigu Pills? Thinking about it like this, Mu Ying became a little excited. Not to mention how much money can be sold for those Bigu Dans, just let her keep them for herself. It is also very practical, and since she has this craft, even if she has this Jin Family Pharmacy, she will not have to worry about having nowhere to go in the future.

"I see, that's how it is. Outwardly, though. How do you tell what grade the pill is? Mu Ying asked again.

"The higher the grade, the more thoroughly the impurities of the pill are removed. Therefore, you can tell it just by smelling the taste of the pill, if the taste of the herbs is big and the smell of the pill is small, then the pill is inferior, if the taste of the herbs is as big as the flavor of the pill, it is medium, and if the smell of the pill completely overshadows the taste of the herb itself. That's the best elixir, there is no doubt about it. The difference between the smell of the three grades of pills is the most obvious, and if you only look at it with your eyes, there is also a gap, but the gap is not big. The color of the superior elixir will be darker, and the color of the inferior elixir will be much lighter. ”

If you only rely on the color to judge the grade of the elixir, it is indeed not easy. Because the color shade is to be compared to the rear will be known, only when the current, medium, and upper grade elixirs are brought to you for you to see, you will be able to see which one is superior. Which is medium and which is inferior. But if you only take out one pill for you. You're still not sure what grade it is. Besides, the color of each type of pill is different, which means that unless you have seen the various grades of each pill, you can figure out which grade of the pill in your hand is.

Therefore, if you look by the eyes. It is only useful for some common low-grade pills, and in most cases, it is still more reliable.

However, after hearing Hu Lei's explanation, Mu Ying thought about it. I still don't know what level the 36 furnaces I have refined. Because she didn't know that the pill was also divided into grades when she was alchemizing, she didn't know how to distinguish between high and low grades. Therefore, she didn't go out of her way to smell it, but just took a closer look at the appearance of the pill.

"Brother Hu, can you let me see what the three levels of Bigu Dan look like?" After thinking about it, Mu Ying still asked. Because she herself knew that although the thirty-six bottles of pills were refined by herself, all the materials and pill furnaces were from the Jin Family Pharmacy, so those pills should not be returned to her hands. Although she didn't know what the taste of the pills she refined, she remembered their color shades, if Hu Lei let herself see it, then she would definitely be able to know what level she was refining, and she would also have a point in her heart about her level.

Hu Lei was not surprised by her request, after all, her curiosity was normal, and the most important thing in the Jin Family Pharmacy was all kinds of pills, not to mention the lowest grade Bigu Dan. So he beckoned a young man to get something, and Mu Ying saw that the guy quickly ran to the counter, took out three bottles from it, and then ran over again.

Hu Lei took the three bottles, then handed them to Mu Ying, and motioned for her to open them.

Mu Ying opened the first bottle first, poured out an elixir, and then looked at its color, and found that its color was lighter than the color he had refined, and his expression was overjoyed.

As long as it is lighter than the color of the self-refining, it means that the ones that you refine will at least be medium Bigu Dan. After seeing its color, Mu Ying lowered his head and smelled it.

"This is a low-grade Bigu Dan." Because Mu Ying just lowered his head slightly, he could smell a very strong smell of medicinal herbs, and the aroma was very weak.

Hu Lei nodded and motioned for her to continue.

Mu Ying put this low-grade Bigu Pill into a bottle, took out another bottle, and when he poured it out, he saw an elixir that was a little darker than the one just now. And Mu Ying laughed in his heart after seeing this elixir.

There are a total of three grades of pills, the one just now is a low-grade Bigu Pill, and the remaining two must be medium or high-grade, but this one in Mu Ying's hand, although the color is darker than the one just now, it is still a little lighter than the one he refined.

Therefore, the ones I practiced by myself should be the top-grade Bigu Dan.

After looking at the color, Mu Ying still lowered his head and smelled the smell, and found that it was indeed as Hu Lei said, this pill did smell half medicinal and half fragrant.

"This is a medium Bigu Dan."

After seeing Hu Lei nodding again, Mu Ying opened the lid of the last bottle and poured out a pill from it.

Although I know it in my heart, I still really look at it and smell it. And when the pill just rolled out of the bottle, Mu Ying finally put his mind at ease.

Sure enough, it was exactly the same color as the Bigu Dan she refined. After smelling the smell, I really smelled a very aromatic aroma, and the taste of the medicine was particularly light. I didn't expect that I was just getting in touch with alchemy, and I would be able to refine a high-grade elixir. Mu Ying was very excited in his heart, and his enthusiasm for alchemy suddenly rose hugely, and he had already made a decision in his heart that as long as he had enough time in the future, he would refine more Dan to exercise himself.

She had already discovered that alchemy seemed to be due to the frequent use of aura, so the speed of cultivation was much faster than usual, and if she continued to refine the pill for a long time in the future, it should be very beneficial to the improvement of her cultivation.

"Superior Bigu Dan." She put the pill into the bottle and handed it to Hu Lei along with the previous two.

"Hmm. In the future, you don't need to compare, you can know how the three levels are different. Hu Lei said with a smile.

"Thank you, Brother Hu, if it weren't for you, I might not have known this knowledge all along. But is it really that hard to get rid of impurities? ”

As soon as she finished asking, Hu Lei glanced at her in a little surprise: "Haven't you ever refined Dan, how can you not feel it?" After seeing that Mu Ying was still looking at him with wide eyes, he could only helplessly explain: "Of course it is difficult to remove impurities. Because when alchemy, on the one hand, you have to pay attention to the stability of the fire, and on the other hand, you have to pay attention to the situation in the furnace. Even if you don't do anything, sometimes there will be uneven heating in the furnace, and then the alchemy will be considered a failure. What's more, it is necessary to remove impurities, those impurities are particularly small, and they must be carefully searched with the divine consciousness to find them, so if you don't pay attention, you may miss the impurities, and if the divine consciousness is focused on finding impurities, then you will not be able to do it again in the stable dìng of the fire. Therefore, removing impurities is a difficult problem for all alchemists. ”

Mu Ying nodded as if she didn't understand. She actually understood what Hu Lei meant, but she had never felt very difficult since the alchemy, perhaps because her divine sense was far more than dozens of times that of ordinary people, so it was very easy for her to control the heat and remove impurities at the same time, and she didn't feel any difficulties.

Hu Lei continued: "The higher the level of the refined pill, the more difficult it will be to remove impurities. This is because when the grade of the pill is higher, the more types of medicinal materials will be needed, so it will be more difficult to remove impurities. At the beginning, you can still remove the impurities cleanly, but as soon as you clean it here, the newly put spirit grass over there will become a medicinal liquid again, fused with the medicinal liquid you just cleaned, and at that time, if you want to find and remove the impurities inside, it will take more divine sense. Therefore, most of the high-grade pills are inferior or medium-grade, and if they are high-grade, they are too rare. ”

Mu Ying's expression moved. Because the problem that Hu Lei is talking about now is also a problem that she noticed when she was alchemizing. It was precisely because of this that she came up with a method by herself: put the spirit herbs into the alchemy furnace before and after, and at the same time deal with the impurities in the medicinal liquids on both sides.

It's just that since they all find it difficult to remove impurities, why don't they do it like themselves? Mu Ying didn't believe that they couldn't come up with such a solution, there must be some other problems. So she made a very innocent look and asked, "Then can you use the aura to divide the alchemy furnace into two halves, remove impurities on both sides at the same time, and then mix the medicinal liquid?" (To be continued......)