After a long time, Zhou Nan retracted his thoughts, and threw the ore that had been prepared into the casting furnace without hesitation and smelted it.

In fact, there are also raw materials for purifying good things in the immortal cultivation world, but they are generally refined ordinary things. Because of this, mass production is possible. However, the purity requirements of the raw materials for refining special things are different. Therefore, it is difficult to have a standard that meets a wide variety of needs.

In this way, some precious ores are sold as raw materials. After buying it back, it will be concocted by the immortal cultivators themselves, and they can get it as they want. As for messing up, it's that you're not good at learning, and it's no wonder to others.

Moreover, this ore purification is not a simple job. If the technique is not good, it is easy to lose a large amount of raw ore. As a result, not many people are willing to sell materials that are purified and good. Even if this can be sold in large quantities and make huge profits, unless those big business alliances have this confidence, self-employed people will never be able to play.

The temperature of the casting furnace was very high, and even with Zhou Nan's current physical strength, he felt unusually hot after staying for a long time. This casting furnace is specially made, with a complex formation engraved on it, after filling in the spirit stone, the formation can be activated, the flame can be gathered, the temperature is raised, and it is very convenient to use.

The last time he cast, Zhou Nan could use his own mana to stimulate the spiritual fire seeds in his body, and use the spiritual fire to refine the weapon and purify the raw materials. But now, he doesn't have that ability. Therefore, it is necessary to prepare such a casting furnace and solve its own drawbacks.

This casting furnace was accidentally found in a small market when Zhou Nan traveled a few years ago, and he bought it to save trouble. Unexpectedly, providence made people, and one day it just happened to apply to him. Otherwise, he wouldn't be able to cast. After all, no matter how high your skills are, you can't even melt the ore, and everything you say is empty.

It is precisely because of this that refiners, alchemists, and array mages, these special professions are very popular in the world of cultivating immortals. belongs to the kind of person with the best popularity, and both the good and the devil eat it. After all, everyone has a difficulty, not all immortal cultivators can refine pill refining tools, and they will always ask for people.

Therefore, alchemists, refiners, and array mages are very valuable resources. Just like the old master you met the last time the Valley of the Wind was opened. Although there is only the cultivation of the Great Perfection of the Foundation, it is also very face-saving to connect the ancestors of the Dan Period. Because, he has an identity, the top five formation mages in the Yan Kingdom. Although it is not clear what the level of this top five is, just relying on fame makes people awe-inspired.

Alchemy, alchemy, formation, these skills are very profound, and many monks spend their lives without spying on the profound realm. Therefore, most immortal cultivators who take this path will miss their cultivation in vain because of their painstaking study, and in the end they will end up with a pinch of loess, which has to be said to be an irony.

But even so, in order to be able to mix better in the immortal cultivation world, many people are still willing to learn these essential skills. After all, the path of immortals is difficult, and human affection is very important. Asking others for everything, and it is not the same thing for a long time. Therefore, many immortal cultivators will also cultivate a skill.

Just when Zhou Nan was thinking wildly, the large pieces of ore had gradually melted under the high temperature. As long as the ore is melted at the beginning, it is not far from being completely melted. Sure enough, it didn't take long for a small half-viscous dark red liquid to appear in the casting furnace.

These dark red liquids have a very high temperature. Because of the presence of many impurities, many spots of other colors appear on the surface. And, as the high temperature continues to burn, these impurities are decreasing. But at a certain point, no matter how much it is burned, some impurities will not be reduced by half.

At this point, it will depend on the foundry's own ability. They will first cool and solidify the ore solution. Then take advantage of the residual temperature to seize the time and temper the impurities in the material. This process is cumbersome and requires repeated operations. Eventually, the ore becomes a pure raw material.

The method used by Zhou Nan was a casting technique, not an immortal cultivator's refining technique. Therefore, this work is inevitable. Unlike a refiner, who sits there and does not move, he just needs to use spiritual fire to continuously burn away impurities according to a specific method. Although the methods are different, the final results are the same. All of them are working hard to purify the raw ore.

According to different properties, materials are divided into metal materials, monster materials, wood materials, and some other special materials. Zhou Nan is best at metal materials. Because, when he first learned, he also learned step by step from refining metal ores. Over the years, Zhou Nan has never used materials other than metal.

But this is not to say that the other types of materials are bad, it's just that Zhou Nan hasn't touched on them for the time being. Moreover, at present, in the world of cultivating immortals, the highest output is metal materials. The sources of other materials are quite unstable and, as a result, limit their development from the side.

Because to make soft armor, only a single metal is used, which simply cannot meet the requirements. Therefore, Zhou Nan first had to raise the ore to a high enough purity, and then use special techniques to blend a variety of metals and compound their properties to meet the requirements.

Whether the soft armor is good or not, this silk making is the key. Whether silk making is good or not, the purity and compounding of this material are very important. Therefore, from the very beginning of this refining, Zhou Nan was required to do his best every step of the way, and there must be no sloppiness.

Wielding the casting hammer vigorously, Zhou Nan pounded the ore hard, even though the sweat got into his eyes, it was sour and disgusting, but he still had to feel everything tightly with his divine thoughts, and he didn't care about wiping it.

In this way, with a meticulous attitude, half a month later, Zhou Nan finally purified more than a dozen kinds of metal ore.

After inspecting the raw materials and finding that the purity and quantity were qualified, Zhou Nan no longer hesitated to combine the metals.

This step is very important, and it doesn't save much trouble compared to embroidery. Although the foundry may seem rude, there is art in many of the details, but it is not easy to spot.

Next, Zhou Nan took out a delicate small tripod from the storage bag, and the surface of the small tripod was inscribed with one strange formation after another, one foot square, not much of a size. This tripod is square, on the four tripod feet, each plate has a dragon head. There is a thin tube in the faucet that allows the liquid to flow out.

moved the casting furnace, Zhou Nan didn't care about the heat, so he took out a whole boulder and blocked it on the fire. After that, he made a small fire hole on the boulder and put Xiao Ding on it.

Seeing that everything was ready, Zhou Nan took a deep breath, and cut the raw materials that had been refined into small pieces and threw them into Xiaoding.

As the heat burns, the raw material gradually melts, eventually forming a liquid. When the temperature of the liquid is high enough, it will become very thin and can flow out slowly along the mouth of the dragon at the foot and along the thin tube.

When the first drop of liquid was about to flow out, Zhou Nan's eyes lit up, and he hurriedly took out a bunch of jars of different sizes. These jars are covered with sealed rune paper. After opening the jar, Zhou Nan took advantage of the high temperature to fill the liquid in the thin tube into the jar, pasted the talisman seal, and quickly sealed it.

Repeating this step, until all the ore had been turned into liquid and the seal was completed, Zhou Nan stopped what he was doing, wiped the sweat from his forehead, and let out a long sigh of relief.

After resting for a while, Zhou Nan picked up the jar and mixed these high-temperature liquids according to a certain proportion.

After the last, Zhou Nan took out a bronze sieve and poured the mixed liquid on it. Suddenly, under the action of gravity, these liquids flowed down the sieve holes into silk threads.

The formed silk threads were very hot for a short time, and Zhou Nan soaked them in a special liquid. On the one hand, this can cool down, and on the other hand, it can increase the strength of the silk thread.

In this way, two days later, Zhou Nan's side was already piled with several thick layers of silk threads. The essence of these silk threads is metal, because the sieve hole is small, so when it flows out, it becomes a very fine silk thread. To the touch, it is no different from real silk thread, the same softness and toughness. If you are not careful, you may even cut your fingers, which is very sharp.

After the wire drawing is completed, Zhou Nan's soft armor production can be said to be more than half completed. Next, Zhou Nan measured his size and got busy. Using a technique of hollowing through silk, he easily weaved a pile of silk threads on the ground into a piece of soft armor.

The soft armor is very thin, but there are as many as three layers. There are gaps between the layers, which can slow down the force and defuse the attack. Between each layer, because of the special technique of hollowing through the filament, it is very dense. Moreover, after this, the soft armor made of metal has lost the characteristics of metal at all, and it feels soft and smooth like satin. Wearing it on the body is a rare enjoyment.

This soft armor, Zhou Nan directly made a coat against his robe. When he was done, he took off his coat and put the soft armor on his body. The soft armor is very light and soft, and it is not restricted by hard armor at all, and it is very comfortable.

Turning around and moving, a smile appeared on Zhou Nan's face. But this was not over, he took out the high-grade spirit weapon flying sword from the storage bag again, and stabbed it fiercely on the robe.

Suddenly, a bright spark flashed, and Zhou Nan only felt that the part that was stabbed was tight, and with a 'poof' sound, the flying sword slid weirdly. Looking at the soft armor again, except for a white mark, there is basically no damage on it. With a slight touch of the finger, the white marks disappeared.

Nodding with satisfaction, looking at the glittering soft armor, Zhou Nan's heart moved, and he said with a smile, "Yes, although the flying sword is only a body attack and does not stimulate any power, but even so, it is enough to see that you are extraordinary." Let's call you Mingguang Jia, I hope it can bring me good luck. ”