Because the building itself is a tower-shaped structure, the top floor of the Seven Star Building is at least four or five times smaller than the first floor, but in this floor, more things are piled up, and the quality of these items is obviously higher than that of the downstairs, in fact, because the top floor of the Seven Star Building will be haunted by alchemists and those masters of the late stage of Ning Zhen and even the junior master masters of the early Zhou Tian, the top floor of the Seven Star Building is concentrated with more good things.

Although Yun Tian didn't know what purpose Tourmaline had in mind to take him up to the top floor of the Seven Star Tower, he was at ease, and he also urgently needed to find a usable Dan furnace, so although he had some doubts in his heart, he still decided to follow Tourmaline to take a good look at the top floor of the Seven Star Tower.

The top floor of the Seven Star Building consists of five areas, namely the Herb Area, the Pill Area, the Mineral Materials Area, the Craftsman Area and the Rare Treasures Area. The herb area and the pill area are the activity areas for alchemists, the mineral area and the craftsman area are the activity areas for craftsmen, and the rare treasure area is the area frequented by most people.

After Yun Tian came in, he just glanced around with his gaze, and soon his attention focused on a certain area of the Rare Treasure Area.

In that position, there were three Dan furnaces side by side, three Dan furnaces of different sizes and shapes, none of which looked like they were new furnaces, but had been used for a long time.

Yun Tian walked over quickly, picked up a Dan furnace first, held it in his hand and looked at it carefully.

The volume of the three Dan furnaces is not very large, the one on the left is about a foot high, the furnace body is round, there are two furnace ears, but there is no furnace lid, the whole body of this Dan furnace presents a blue-black, it seems to be often used. This kind of Dan furnace can obviously refine medicine at most, and it is impossible to refine Dan at all, because an open Dan furnace is likely to let the spiritual energy of the herb escape and lose the spirituality of the pill.

The Dan furnace in the middle is about eight inches high, although the height is shorter than the previous one, but the Dan furnace is square, like a miniature version of a small ding. Moreover, this Dan furnace has a complete lid, and there are some clear artificially carved textures on the furnace body.

"This small furnace is actually a tripod, that is, the Dan master world often said Dan Ding, the tripod is engraved with a formation, this tripod can be used by the masters of the condensation period and even the Zhou Tian period, it is the most expensive of the three Dan furnaces. As for the first Dan furnace, its volume is large, suitable for refining a medium amount of pills, and the volume of its furnace body determines that the heating area is more uniform, which is suitable for refining pills by hand alchemists. ”

Tourmaline carefully describes the differences and characteristics of several Dan furnaces. The focus is on the first two Dan furnaces. But when it came to the last Dan furnace, she didn't go into detail, but said to Yun Tian: "The function of this Dan furnace is worse than the previous two, but if you are a beginner, you should be able to use it, but I don't know which one Yun Gongzi likes?"

Yun Tian looked at the tourmaline and didn't seem to pay much attention to the last Dan furnace, but he was curious in his heart, he could clearly feel that there was an extraordinary power in this Dan furnace, just from this point of view, I am afraid that this Dan furnace is not simple, why does tourmaline turn a blind eye?

Yun Tian hesitated in his heart whether to tell Sù Tourmaline about his doubt, but after thinking about it, he decided to hide this question in the bottom of his heart.

"Tourmaline girl, what is the price of these three Dan furnaces?" Yun Tian asked.

"These Dan furnaces are worth a lot of money, so they will not be measured by ordinary gold and silver, and their price will be calculated in terms of pills or Xuanshi. The first Dan furnace is equivalent to ten mortal Xuanshi, and the second Dan furnace is equivalent to one hundred mortal Xuanshi, as for this last Dan furnace, because it is not a complete product, only one mortal Xuanshi or one Qi Condensing Pill can also be exchanged. ”

Yun Tian's heart trembled when he heard this, he didn't expect these Dan furnaces to be so valuable before, you must know that in this world, gold and silver jewelry are only things that ordinary people like, for cultivators, gold and silver jewelry are far less valuable than cultivation resources, therefore, in this world, cultivators are more likely to exchange Xuanshi or pills as the equivalent of exchange.

Xuanshi includes ordinary Xuanshi, lower-grade Xuanshi, middle-grade Xuanshi and Shang-grade Xuanshi, and its ratio to huàn is basically one to 100. As for the gold and silver in the secular realm, it was very cheap in front of the resources used by cultivators. Even if it is the lowest grade mortal stone, according to the secular value, its value is more than ten taels of gold, as for a higher grade lower grade stone, it is simply priceless, and it is impossible to exchange it for ordinary gold and silver.

Similarly, the refining pill is also quite valuable, the pill made of it, even the most ordinary body forging pill can be worth one or two gold, and a body refining pill that can almost improve a realm cannot be bought for hundreds of taels of gold, and at this time, Yun Tiancai realized that the few body refining pills he ate before were actually equivalent to eating thousands of taels of gold!

It is said that as far as cultivators are concerned, ten taels of gold are nothing, the problem is that the things that the Fang family gave to Yuntian before are not enough for ten taels of gold, plus the previous purchase of Heavenly Star Grass has spent some more, the remaining bit of gold is not enough for ten taels at all, and it is not enough to buy the silver needed to buy the last Dan furnace I saw.

Yun Tian hesitated for a moment before suddenly asking, "Tourmaline girl, the silver money I have on me is not enough, can I exchange the pill for this pill?"

"Pill, what pill?" Tourmaline knocked on Yuntian, looking a little puzzled.

Yun Tian thought about it, but decided to come up with something, otherwise it would not be enough to convince Tourmaline.

So Yun Tian shook his wrist, and suddenly a small porcelain bottle appeared in his hand. Yun Tian's movements made Tourmaline's eyes light up, and she stared at his hand tightly, but Tourmaline didn't find any storage magic weapons such as rings and bracelets from Yun Tian's hand, but this only added to her doubts.

The porcelain vase that appeared in Yun Tian's hand only contained one pill, but it was this pill that had already made Tourmaline's small mouth open and his face full of shock.

"This is, this is actually a mortal-level fifth-order elixir soul nourishing pill?" Tourmaline couldn't help but shout.

"Yes, it's the Soul Nourishing Pill, what's wrong?" Yun Tian couldn't help but ask when he saw that Tourmaline was so surprised, in his opinion, the effect of this Soul Nourishing Pill was far inferior to that of the Body Refining Pill, but why did Tourmaline have such a big reaction.

It's just that Yun Tian doesn't know at all that for most cultivators, the most difficult thing to overcome is actually the improvement of spiritual sense, ordinary people lack good cultivation techniques, so it takes a lot of time to improve spiritual sense, but the effect is not obvious. However, it is not possible to improve the cultivation of spiritual sense, because without sufficient spiritual sense, many exercises are difficult to perform.

In contrast, the improvement of cultivation is much easier, and with the assistance of exercises and resources, this process becomes very easy.

Only a person like Yun Tian who defends the sky will not need to worry about improving his spiritual sense.