The market is very lively, and many stalls are placed along the street, which is very casual. There are disciples of the Haoyue Sword Sect who set up stalls, and there are also many outsiders. The three of them casually walked to a stall, and Li Changsheng squatted down to check. The stall owner was an inner disciple, and there was a ninth-level demon beast core on his stall.

"This junior brother, you see that this is the beast core that our team hunted, for the sake of everyone being the same family, I will sell it to you cheaply, and a low-grade Yuan Stone will do. The inner disciple who set up the stall said that the cultivation of the inner disciple had reached the martial spirit realm, and it was relatively simple to hunt the ninth-level demon beast.

"A low-grade Yuan Stone?" Li Changsheng frowned, he didn't expect the asking price of the beast core to be so high. A low-grade yuan stone is equivalent to a thousand gold, which is equivalent to the annual income of a thousand ordinary households.

"A few junior brothers and sisters, you are still miscellaneous disciples, if you give this beast core to the sect, you can exchange it for four thousand sect contribution points. If it weren't for my family's eagerness to use the money, I wouldn't have sold it. And I see that your cultivation is not bad, and you can still say that you hunted it yourself, so that you will also be valued after entering the inner gate. The stall owner said very understandingly.

The miscellaneous disciples who come here to buy the beast core usually buy it back in exchange for the contribution points of the master. Beast cores are very expensive, and those who can be bought with money are usually the children of some big families.

"Forget it, just give it to him. Yun Yan was very generous, and directly took out a yuan stone and handed it to this inner disciple.

"Welcome to come back next time!" said the inner disciple happily.

"That stall has an alchemy furnace, don't you need it, let's go over and have a look. After leaving the stall, Han Dong suddenly pointed to a stall in the corner and said. Li Changsheng turned around to take a look, and sure enough, he saw a bronze alchemy furnace on the stall of a bearded man.

Li Changsheng was extremely surprised, the alchemists of the Book Sword Continent were extremely rare, so the alchemy furnace rarely appeared, and even if someone occasionally took it out and sold it, it was often impossible to sell it for a year and a half.

"This uncle, how can this alchemy furnace be sold?" Li Changsheng walked over and asked. Li Changsheng looked over and saw that this alchemy furnace was bronze all over, and two swimming dragons were carved at both ends, which was lifelike.

"What kind of alchemy furnace, this is obviously the ancient ding of the pre-Qin period. The bearded man glanced at Li Changsheng and said. Li Changsheng was also a little puzzled, could it really be that he was wrong? He had never practiced Dan himself, so it was normal for him to admit his mistakes.

He opened the lid and took a look, there was a place for the medicinal herbs inside, and there was also a place for the pill! It's not that he was wrong, but he didn't know it, Li Changsheng thought in surprise.

"Since it's Guding, then I'll buy it back and make decorations. Li Changsheng said.

"Twenty gold, no bargaining!" said the bearded man in a rough voice.

"Yunyan, help me pay. Li Changsheng was extremely surprised, but secretly remained silent, because he found that this alchemy furnace was by no means mortal, at least it was also a low-grade spiritual weapon.

"Okay!" Yun Yan, Han Dong and the others took out twenty gold and handed it to the bearded man. Several of them are also children of big families, and they spend money very happily.

......

"Are you sure this is an alchemy furnace, not Gu Ding?" After walking out of Fang City, Han Dong asked uneasily.

"Of course, I'm sure that this is not only an alchemy furnace, but also a low-grade spiritual weapon. Li Changsheng said.

"I'm making a lot of money now!" The three of them were all happy that Li Changsheng had bought a good Dan furnace.

"I'm really sorry to spend your money on something today. Li Changsheng said, "That's it, I'll try to refine a furnace of Qi Gathering Pill first, and then I can refine Peiyuan Pill in the future, and I'll give you a few by myself." ”

Yun Yan Han Dong and the others were dumbfounded, each person sent a few Pei Yuan Dan!?Pei Yuan Dan can only be exchanged for 10,000 contribution points in the sect, and they can get such a promise for a little money!

The three of them were looking forward to it, and at the same time, they felt extremely glad that they had actually called an alchemist a brother and sister! The sudden surprise made them feel like they were in a dream.

And after the bearded man in Fang City saw the three of them leaving, he quickly closed the stall and disappeared into the crowd with a puff of smoke. A broken Gu Ding can actually be sold for twenty gold, and the miscellaneous disciples of the big sect are really easy to deceive, he said secretly in his heart.

......

Li Changsheng returned to the room and began to alchemy.

Put all the medicinal materials into the alchemy furnace, and then add the beast core of the ninth-level demon beast.

Li Changsheng took up the "Fire Spirit Formula", transformed the scholarly qi into natural fire, and began to burn it under the alchemy furnace, and then held his breath and concentrated, feeling the changes in the medicinal materials in the furnace with his heart.

After a while, dozens of medicinal herbs melted into liquid at the high temperature and began to wrap the demon beast core.

Book Spirit!

In the void behind him, the phantom of the book spirit appeared. After the golden book spirit opened, it turned to the second page. On the second page, the symbols of the chemical elements appear again - h, he, li, be, b, c, n, o, f, n......

And with the change of the medicinal materials in the alchemy furnace, under the periodic table, chemical equations actually appeared!

2na+2h2o＝2naoh+h2↑......

na2co3+2hcl===2nacl+h2o+co2↑......

c2h5oh＋3o2=2co2↑＋3h2o......

......

A large number of densely packed appeared, and there were many of them that Li Changsheng had not seen. However, Li Changsheng's academic performance in his previous life was relatively good, and he could understand those equations that he had never seen before.

The numbers at the beginning of these equations are the optimal amounts of each element. If you write these down one by one, and then through research, you can find the best dosage of various medicinal materials. I don't know how many times more accurate the dosage calculated in this way is than the dosage that has been handed down from experience.

And he uses natural fire to heat, the heat is very uniform, very easy to control!

This furnace of elixir is regarded as a test product, I first write down these equations, and then calculate the dosage of various medicinal materials, then the next furnace of elixir will be a perfect product.

Finally, Li Changsheng's first furnace of pills was refined, and he only practiced 5 mortal Qi Gathering Pills in this furnace. But don't worry, this is just a test item. Moreover, the first furnace can refine 5 pills, which can already be regarded as a peerless alchemy talent in the Book Sword Continent. Li Changsheng used the fire of nature, which was of course much better than the flame formed by the Yuan Qi of Heaven and Earth to refine the pill.

Theoretically, a furnace of pills can refine up to ten pills, but due to the inaccuracy of the dosage of medicinal materials, no one has ever been able to do it. However, after Li Changsheng made accurate calculations, he refined ten pieces, and it was definitely not a problem.

Moreover, every pill he refined would be a Heavenly Pill above the eighth order, because there was no impurity interference from the superfluous medicinal materials, which could make the medicinal materials in the Dan furnace carry out a perfect chemical reaction!

Refining the eighth-order Heavenly Pill is basically a myth in the Book Sword Continent.

;