The demons usually use their bodies to fight and rarely use magic weapons. Well, except space equipment, so the uneasy things like refining materials are of no value in their eyes. Medicinal materials can be eaten directly, um, and elixirs can cure injuries, increase cultivation, increase insight, and allow them to survive the heavenly tribulation... So they feel that they have made a lot of money by changing the refining materials of one cubic kilometer of weapons, while they think that the medicinal materials of only a few hundred cubic meters are more valuable. After careful calculation, they think that they can exchange for three thousand Duhe Dan and five thousand other various elixirs.

Li Yu did not bargain for this, because even if he only used one-tenth of the medicinal materials, he could still refine the elixirs needed by the demons. How could he have the nerve to lower the price?

After discussing the transaction method, Li Yu did not rush to open the furnace to refine the alchemy. It was really too many elixirs that needed to be refined this time. If he had more than 8,000 elixirs in the previous way, he would need to refine hundreds of furnaces. One furnace of elixirs can take a long time to take one to five hours. It would take two or three thousand hours, and only twelve hours a day. He would have to refine it without sleeping and resting, and it would take two hundred days. If he had to rest and eat, he would have spent a year here.

The previous alchemy furnace was too small, and only twelve pieces of each furnace were produced. If there were more, the medicinal materials could not be expanded in the alchemy furnace, and problems would arise during refining. Li Yu decided to refine a large alchemy furnace, which could refine the amount of elixirs in the previous ten furnaces at a time. Then, it only takes about twenty days before he could refine the elixirs needed by the demon clan.

Refining alchemy furnaces does not require much advanced refining technology. There are too many materials for refining tools, so there is no need to find them separately. There are also ground fire refining rooms.

As for the design, Li Yu didn't need to carefully design it. He just wanted to enlarge the original alchemy furnace. It took only half a day before Li Yu refined the new alchemy furnace.

Next was the time to refine the alchemy. Li Yu wanted to leave the demon realm early and go to the spiritual realm to take a look. He also tried his best to refine it. He had been sleeping for more than twenty days. He didn't know how many furnaces of elixirs he had refined, and he had been serving the sword girl next to him and told him that he had refined enough. He stopped.

After practicing alchemy for more than 20 days, his alchemy level has also improved to a certain extent. Only in the first few furnaces, because he was not familiar with the enlarged version of the alchemy furnace, he produced some top-grade elixirs. The ones he refined later were either perfect or high-quality. The most important thing was that his success rate was still 100%. If other alchemists knew about this success rate and quality rate, they would definitely be shocked.

After a day off, I received the news that Li Yu had refined all the pills. The three demons of Thunder and Ming were here, and the number was not wrong. The pills were delivered smoothly.

"Brother Li Yu, this is the medicinal materials and refining materials that I promised you." Xiaofeng handed over a space equipment. During the two battles, the space equipment they gained the most.

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

Li Yu took two space equipment and checked it. It was found that it was specialties from Xiaofeng and Youshui. Last time, Li Yu asked herbal medicine to help them refine elixirs, but the amount seemed to be too large.

Li Yu looked up and welcomed the ugly faces of the two great demon kings.

"Brother Li Yu, I have prepared a lot more. Can you see if I can...hehe..." Xiaofeng said flatteringly. Youshui didn't say anything, but he also looked at Li Yu with hope.

Li Yu felt a little dizzy in front of him. Could it be that he was really good to them? They were going to trap themselves here and let themselves be alchemists for them for the rest of their lives.

"You two guys are too much. What else do you want to do if my brother helps you refine so many pills? He helps you refine pills for the sake of good relationships. Don't make mistakes." Although Lei Ming did not look at the things in the space equipment, he also guessed what was going on. His brother could not let these two guys bully him. He was immediately unhappy and wanted to help Li Yu stand up.

Lei Ming's reputation was not blown out, but was made in the demon realm, not to mention that he has become the demon emperor now. Xiaofeng and Youshui monsters were so scared that they shook their heads. Xiaofeng said sadly: "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. Although there are many pills for us to trade this time, there are many monsters in my tribe. If you don't store more, what can I do in the future?"

"I have been refining elixirs for so long. Now I want to vomit when I see the medicinal herbs. I won't refine them in a short time." Li Yu paused for a moment and continued, "But don't worry, I'll just go to the spiritual realm and will come back to see you. I'll help you refine them at that time. Just as you have time, you can collect more medicinal materials."

After saying that, Li Yu took out three blank jade slips, entered the collection of medicinal materials he collected into the three blank jade slips, and handed them to the three demons, saying, "You may not know some medicinal materials. Among these three jade slips is a collection of medicinal materials for human alchemists. You can look at the collection. Some medicinal materials need to be stored specially, otherwise the medicinal properties will be lost..."

Thinking that in addition to medicinal materials, there are also precious refining materials in the San Yao territory, Li Yu took out three blank jade slips and made minerals. The complete refining materials were given to the San Yao for them to collect them, and they could also use them to use elixirs 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 cannot obtain pills for the time being, he can obtain them in the future.

"Okay, brothers are about to leave. Today we will not be drunk and will not return." Lei Ming likes to drink and also likes to make wine. He has prepared a lot of wine at any time in his space equipment. In his cave, there is a demon who helps him collect spiritual fruits to make wine, so there is no shortage of wine.

The living room of Li Yu's cave was too small, and one person and three demons simply asked his subordinates to set up a bonfire in the open space in front of Li Yu's cave. The three demons also went to hunt a few powerful monsters and came back to roast them to eat. When Li Yu saw that the monsters they hunted back were all fusion-level, they couldn't help but talk. The monsters wanted to eat monsters?

"What kind of eyes do you have? Only those with wisdom are demons, and only those without wisdom are beasts." Lei Ming happened to see Li Yu's strange eyes and couldn't help but laugh and scold.

Li Yu was a little surprised and asked, "As far as I know, your demon clan cannot transform into human form and call it monster beasts, and those who can transform into human form are called monsters. Is there any other classification in the demon clan?"
Chapter completed!