After looking at the general situation of the practice room on the basement floor, Hong Tu chose a practice room, because Hong Tu only needed a quiet environment to refine the Hua Yuan Dan, so there were no requirements for other facilities in the practice room. Moreover, in every practice room, you can use the earth fire that has been towed, and it is also very convenient for Hong Tu to use the earth fire to refine medicinal materials.

"I'm doing alchemy in this practice room, thank you for the practice room provided by Shopkeeper Shen. Hong Tu was quite satisfied with this practice room, and he didn't ask much about the demons who were in retreat in the other two practice rooms. Because Hong Tu felt that as long as it didn't affect his refining of pills, the demons in the retreat in the practice room here had little to do with him, and of course Hong Tu wouldn't bother them to practice in retreat here.

Because the stone doors of the other two practice rooms were closed, it was obvious that the demons inside were in retreat and cultivating, so Shen Wanqian did not plan to introduce the demons in retreat to Hong Tu. Moreover, the demons who were able to retreat in the practice room on the basement floor were all relatively weighty in the Moon Invitation Chamber of Commerce, and it was impossible for Shen Wanqian to interrupt their retreat and cultivation.

"Then Mr. Hong will retreat for alchemy with peace of mind, and I will explain it to Xiao Xili over there. Xiao Xili is afraid that she will be busy with the elder's assessment for a period of time in the future, Mr. Hong can come to me first after he leaves the customs, if you want to see Xiao Xili, I can lead the way for Mr. Hong, after all, the level of the Inviting Moon Chamber of Commerce is relatively strict, and it is difficult to see Xiao Xili without someone from the Inviting Moon Chamber of Commerce to lead Mr. Hong. ”

"Then it's troublesome for the shopkeeper Shen. I'll enter the practice room here, and Shopkeeper Shen can do it himself. Hong Tu directly entered the practice room, and the blue flame in the practice room lit up, suspended in the corner of the practice room, but illuminated the entire practice room. Hong Tu took a look at the facilities in the practice room, and arranged a small formation in the middle of the practice room, Hong Tu walked over and tried to urge the formation, and found that a red torch rose in the center of the formation, obviously this red torch is the earth fire drawn by the formation, although Hong Tu can already use the Dan fire in his body, but the refining of the essence of the medicine can really use this earth fire, after all, the temperature required for the refining of some medicinal materials is not enough, and the temperature of the earth fire can be used to refine the medicine.

Next to the earth fire formation is a futon, this futon does not know what material is used, Hong Tu sat on it and felt a clear head, obviously this futon is not an ordinary object, but a treasure made of special materials. There is also a stone bed in the practice room, this stone bed is not made of ordinary stone, Hong Tu can feel the huge magic emitted by this stone bed when he sits next to the futon, but this magic power is very gentle, not as irritable as the magic stored in the general magic stone, this magic power can easily be absorbed by the demon and does not need to be refined again.

For demons, such a practice room is an excellent place for retreat and cultivation, but for an immortal cultivator like Hong Tu, it is also average, because the place where an immortal cultivator retreats and cultivates is better than a place where the retreat is filled with other energy. However, what Hong Tu only needs now is a quiet environment, as long as there is no one else to disturb him during alchemy and cultivation, Hong Tu is very satisfied, and as for the magic power in the practice room, Hong Tu will not absorb a little.

Take out the materials in the storage ring, put these materials in the category by category, and then Hong Tu starts the formation in the practice room. The formation of pulling the earth fire was activated by Hong Tu, and the temperature in the entire practice room immediately rose, and Hong Tu in the practice room felt that the temperature of this earth fire was very high, but it could just be used to refine the materials in Hong Tu's hands.

According to the order of the materials that need to be refined, Hong Tu uses his divine sense to control the earth fire drawn by the formation, throws the medicinal materials into the formation one by one, and uses the earth fire to extract the essence of these materials. Refining the essence of medicinal materials is originally a matter of slow work and meticulous work, so Hong Tu is very patient to refine the medicinal materials step by step, and the Dan furnace Hong Tu of refining Hua Yuan Dan has also taken out of the space ring, Hua Yuan Dan's Dan Fang Hongtu has long been remembered in his mind, and the steps of refining Hua Yuan Dan Hong Tu is also clear in his heart, now he only needs to refine the essence of the spiritual object in front of him, and Hong Tu can refine Hua Yuan Dan.

Three days later, at noon, in Hong Tu's practice room on the basement floor of the Inviting Moon Chamber of Commerce, Hong Tu was controlling the size of the flames in the alchemy furnace. Hong Tu's divine sense has been staring at the alchemy furnace for three days, after all, the medicinal materials in Hong Tu's hands can only refine the Huayuan Pill once, and Hong Tu is not absolutely sure how many pills he can refine at one time, so Hong Tu was extremely careful when refining the Huayuan Dan, and his mind was always tense, for fear that he would make a mistake when refining the pill.

Now that the essence of the materials in the Dan furnace has been glued together, it is only one step away from successfully becoming a Dan, and Hong Tu can smell the fragrance of the pill inside through the Dan furnace. This fragrance is very charming, Hong Tu can clearly perceive the fragrance emitted by every puff of the elixir, and the spiritual power in Hong Tu's body is enhanced by one point, this feeling is very tempting for immortal cultivators, making Hong Tu greedily speed up the rate of his breathing, and even Hong Tu's heart beats a lot.

Hong Tu pinched out a magic seal with both hands, and there were words in his mouth, and a magic trick hit the Dan furnace. The medicinal essence in the Dan furnace immediately accelerated the speed of fusion, and in less than a minute, Hong Tu's divine sense sensed the medicinal essence in the Dan furnace, forming small round balls one by one, obviously the pill in the Dan furnace had begun to take shape.

At this time, Hong Tu felt that there was a huge spiritual power gushing out of the Dan furnace, and dozens of colorful glows appeared in the Dan furnace, and these dozens of colorful glows were spreading outward from the inside of the Dan furnace, Hong Tu knew that this was a vision caused by the refining of the Huayuan Dan, after all, the Huayuan Dan was the elixir used by the peak immortal cultivators in the Transformation Period, and the formation of the pill would naturally cause a huge tide of spiritual power. Although spiritual power is very thin in the demon world, there is still spiritual power, and Hong Tu's practice of Huayuan Dan will naturally resonate with spiritual power.

The colorful glow lit up in Hong Tu's practice room, and Hong Tu knew very well that if he didn't control this colorful glow, it was very likely that a huge wave of spiritual power would be set off in the sky near the entire Moon Invitation Guild. This spiritual power fluctuation is an ordinary demon, and it can also be seen that there is a treasure in the world, which will not only bring trouble to the Moon Invitation Chamber of Commerce, but also bring trouble to Hong Tu, who is refining the pill, next to the Hong Tu practice room, there are other demons who are practicing in retreat, and the spiritual power fluctuation caused by the formation of the pill cannot be controlled by Hong Tu, and the demon in retreat next to him will definitely immediately discover the abnormality on Hong Tu's side.

However, Hong Tu had long known that there would be this moment, and when the Huayuan Dan was formed, it would inevitably cause a vision, so Hong Tu had prepared a defensive ban in the practice room. When the colorful glow light lit up from the alchemy furnace, Hong Tu used his divine sense to activate the prohibition in the practice room, and a white light lit up around the practice room, although this defensive prohibition would cause a burst of spiritual power fluctuations, but the spiritual power fluctuations caused by this were not large, and even the demons in the practice room next to them did not use spells to investigate, and it was impossible to find this spiritual power fluctuation.

The white light formed a closed space in Hongtu's practice room, and the colorful glow immediately poured out from the alchemy furnace, this colorful glow was very powerful, but it could not pass through the prohibition arranged by Hongtu, so it was impossible for the demons outside to know, in the practice room on the basement floor of the Inviting Moon Chamber of Commerce, the Huayuan Dan refined by Hongtu was about to be successfully born.

Seeing the colorful glow beside him, Hong Tu's face showed a smile, but at this moment, Hong Tu still didn't dare to slack off. Huayuan Dan is about to take shape, but after all, it has not yet been fully formed, the colorful glow is just a harbinger of the imminent birth of Huayuan Dan, and before the moment when Huayuan Dan is really formed, anything can happen, so Hong Tu's mind is still paying attention to the pills in the Dan furnace, and his divine sense controls the speed at which Huayuan Dan is formed.

Detonating the medium-grade spirit stones one by one, Hong Tu controlled a large amount of spiritual power, and poured spiritual power into the Dan furnace at a speed that was not slow or hurried. The Huayuan Dan in the Dan furnace is absorbing the spiritual power that has been injected into the Dan furnace, Hong Tu uses his divine sense to evenly fuse the medicinal essence in the Dan furnace into each pill, and the Huayuan Dan slowly takes shape under the control of Hong Tu's divine sense.

Using the divine consciousness to control the formation of the elixir is very simple to say, but it is very difficult to do this, after all, the divine consciousness of the immortal cultivator is limited and powerful, and the divine consciousness of cultivating to a certain realm will increase, but it is impossible to enhance to the point that the realm cannot bear it, so although Hong Tu's divine consciousness is powerful, it can only be controlled within the scope of his own realm.

After the pill was formed, the colorful glow in Hongtu's practice room began to slowly dissipate, and the huge spiritual power had been absorbed by the Huayuan Dan in the Dan furnace, and only a small part was absorbed by Hongtu. Now that Hong Tu has successfully refined the Huayuan Dan, Hong Tu's divine consciousness has always controlled the Huayuan Dan in the Dan furnace, so Hong Tu knows very well how many pills have been successfully refined in this alchemy. Although it is said that one medicinal material for refining the Yuan Dan is enough to refine thirty-six pills, the alchemist will definitely have some imperfections in refining the pill, so it is impossible to refine thirty-six pills with one material, after all, the alchemist is not a machine, and he cannot refine the pill like a machine without the slightest error, and it is impossible for the machine to refine the pill.

This time the refining of the Hua Yuan Dan successfully refined nine pills, although a part of the materials was wasted, but the first time the refining of the Hua Yuan Dan had nine successes, Hong Tu was already very happy. Immediately afterwards, Hong Tu took out the jade bottle in the storage ring, and prepared to use the pill to receive the pill into the jade bottle.