The demon clan generally fights with their bodies, and rarely uses magic weapons, well, except for space equipment, so things that can't be eaten like refining materials are of little value in their eyes. The medicinal herbs www.biquge.info can be eaten directly, well, they can also be alchemy, the pill can cure injuries, increase cultivation, increase understanding, and allow them to survive the catastrophe...... Therefore, one cubic kilometer of refining materials was exchanged for more than 300 Du Erdan, and they felt that they had made a lot of money, while only a few hundred cubic meters of medicinal materials they felt were more valuable, and after careful calculation, they felt that they could exchange it for 3,000 Du Erdan, 5,000 other pills.

In this regard, Li Yu did not bargain, because even if he only used one ten-thousandth of the medicinal materials, he could refine the elixir that the demon clan needed, how could he be embarrassed to lower the price again.

After discussing the transaction method, Li Yu was not in a hurry to open the furnace for alchemy, it was really too many pills that needed to be refined this time, if it was according to the previous way, more than 8,000 pills, he needed to refine hundreds of furnaces, a furnace of pills took long and short, ranging from one hour to five hours, that was two or three thousand hours, only twelve hours a day, he kept refining without sleep, and it would take two hundred days, if you add the time for rest and eating, a year would be spent here.

The previous alchemy furnace was too small, one furnace could only produce twelve, and if there were more, the medicinal materials could not be opened in the alchemy furnace, and there would be problems when refining, Li Yu decided to re-refine a large alchemy furnace, which could refine the amount of pills from the previous ten furnaces at a time, then, it only took twenty days for him to refine the pills that the demon clan needed.

Refining the alchemy furnace does not require much advanced refining technology, there are too many refining materials to be used up, and there is no need to find another one, and the earth fire refining room also has it.

As for the design, Li Yu didn't need to design it carefully, just enlarge the original alchemy furnace, and it only took half a day for Li Yu to refine the new alchemy furnace.

Next is the alchemy time, Li Yu wanted to leave the demon domain as soon as possible to go to the spirit realm to see, and he also practiced desperately, for more than 20 days, without sleep, he didn't know how many furnace pills he had refined, or the sword Ji who had been waiting on the side told him that he had practiced enough, and he stopped.

He has been alchemy for more than 20 days, and his alchemy level has also improved to a certain extent, only in the first few furnaces, because he was not very familiar with the enlarged version of the alchemy furnace, there were some high-grade pills, and the later refining was either perfect or high-quality, and most importantly, his success rate was still 100%, and if such a success rate and boutique rate were known to other alchemists, they would definitely be shocked.

After resting for a day, I received the news that Li Yu had refined all the pills, and the three demons of Thunder were here, and the number would not be wrong, and the delivery of the pills was successfully completed.

"Brother Li Yu, this is the medicinal and refining materials promised to you." Howling Wind handed over a space equipment, and in the two wars, what they gained the most was space equipment.

Youshui also handed over a piece of space equipment: "This is what I promised you." ”

Li Yu took the two space equipment and looked at it, which were the specialties of the Howling Wind and the Youshui Territory, and the reward for letting Li Yu give medicinal materials to help them refine the pill last time, but this amount seemed to be too much.

Li Yu raised his head and ushered in the ugly faces of the two big demon kings.

"Brother Li Yu, I have prepared a lot, see if you can ...... Hehe......" Xiaofeng said flatteringly, Youshui didn't speak, but he also looked at Li Yu hopefully.

Li Yu felt a little dizzy in front of him, could it be that he was really too good to them, they were going to trap themselves here and let themselves be alchemists for them for a lifetime.

"You two guys are too much, what do you want my brother to do to help you refine so many pills? He helped you refine the pill, and that was for the sake of everyone's good relationship, so don't be mistaken. Although Lei Ming didn't look at the things in the space equipment, he also guessed what was going on, his brother couldn't let these two guys bully, and he was suddenly unhappy to help Li Yu out.

Lei Ming's prestige is not blown out, but played in the demon domain, not to mention that he has now become the demon emperor, the two demons of Xiaofeng and Youshui were so frightened that they shrank their heads, and Xiaofeng cried and said: "Brother Lei, Brother Li Yu is your brother and our brother, how dare we bully him, it's just ...... I want him to help us refine some pills again, although there are many pills in this transaction, but there are also many demons in my clan, don't store a little more, what can I do in the future? ”

"I've been refining the pill for so long, and now I want to vomit when I see the medicinal pill, and I won't refine it again in a short time." Li Yu paused for a moment and continued: "But don't worry, I'm just going to the Spirit Realm, I'll come back to see you, and I'll help you refine it then, just so that you can collect more medicinal materials when you have time." ”

After speaking, Li Yu took out three blank jade slips, entered the medicinal materials he collected into the three blank jade slips, handed them to the three demons, and said: "You may not know some medicinal materials, these three jade slips are the medicinal materials of human alchemists, you can look at the collection, some medicinal materials need special storage, otherwise you will lose the medicinal properties......"

Thinking that in addition to the medicinal materials in the territory of the three demons, there were also precious refining materials, Li Yu took out three blank jade slips, made a complete collection of minerals and refining materials and gave them to the three demons, so that they could collect them, and they could also use them as pills at that time.

The three demons were very happy, Li Yu asked them to help collect medicinal materials and refining materials, which proved that Li Yu would really come back, although he could not obtain the pill for the time being, but he could get it later.

"Okay, brother is leaving, we won't get drunk today." Lei Ming likes to drink and make wine, and a large amount of wine is prepared in the space equipment in his hand at any time, and in his cave mansion, there are demons to help him collect spirit fruits to make wine, so there will be no shortage of wine.

The living room of Li Yudong's mansion was too small, one person and three demons simply let their subordinates set up a bonfire in the open space in front of Li Yudong's mansion, and the three demons also personally went to hunt a few powerful demon beasts and came back to roast and eat, when Li Yu looked at the demon beasts they hunted back, they were all combined-level, and they couldn't help but be straight-tongued, and the demon also wanted to eat the demon?

"What kind of eyes are you, those who have wisdom are demons, and those who don't have wisdom are just beasts." Lei Ming happened to see Li Yu's strange eyes, and couldn't help but laugh and scold.

Li Yu was a little strange and asked: "As far as I know, you demon clan can't be called demon beasts if you can transform into human form, and those who can transform into human form are called demons, is there any other classification in the demon clan?" ”

Lei Ming glared at Li Yu and said: "Don't talk nonsense if you don't understand, in the demon domain, only those who have no spiritual wisdom and barbarism and ignorance are called beasts, and those who have spiritual wisdom are called demons." You humans don't know how to distinguish, and those who see the form of beasts are called demon beasts. (To be continued.) )