After Wang Yong threw the fist-sized amount of empty dark iron into the refining furnace, he only heard a 'clang', followed by the sound of metal rolling, Wang Yong rolled his eyes, and the corners of his mouth twitched.

When the abnormal noise inside the refining furnace disappeared, Wang Yong let go of his divine sense to check, and saw that the empty dark iron had stopped rolling at the bottom of the refining furnace.

According to the records in the jade slips, it is necessary to calcinate the empty dark iron with all its strength to remove the impurities inside. The cleaner the impurities in the Empty Shadow Iron are removed, the higher the purity of the Empty Shadow Iron, and the better the effect of the flying sword refined.

Wang Yong pinched the law and opened two more fire throats, allowing the flames to form a fire plate at the bottom of the refining furnace, heating the refining furnace in all directions, and at the same time heating up the materials inside.

Wang Yong's divine sense has not been withdrawn, and he has been observing the changes of the Void Iron continuously, accumulating experience for his refining weapons.

Gradually, Wang Yong opened the fire throat one by one, and not long after opening the seven fire throats, the empty dark iron began to melt, and Wang Yong also stopped continuing to heat, maintaining the existing temperature, waiting for the empty dark iron to completely melt.

Twenty minutes later, the empty iron in the furnace has completely turned into orange molten iron, Wang Yong estimated, the furnace has about five or six thousand degrees of high temperature, Wang Yong can't help but sigh, this kind of extraterrestrial metal is strong, if it is replaced by ordinary mortal iron, at such a temperature, there is nothing left.

Wang Yong observed with his divine sense, and saw that the molten iron of the empty iron no longer emitted white gas, and Wang Yong turned on another fire to raise the temperature in the furnace.

As the fire hose was opened, the temperature in the furnace rose again, and the molten iron at the bottom of the furnace began to emit a faint white gas, and the volume also shrank slightly. Wang Yong knew that this was because the impurities in the empty iron had decreased again, so he was not surprised.

After waiting for more than ten minutes, the molten iron stabilized again, and Wang Yong opened the last fire throat and calcined the empty molten iron in the furnace with all his might.

After Wang Yong's divine sense saw a relatively thick white smoke coming out of the Empty Shadow Molten Iron, the volume of the Molten Iron was greatly reduced, and the Molten Iron became more pure.

After ten minutes of calcination at high temperatures. Wang Yong began to gradually close the throat again. Slowly reduce the temperature inside the furnace. When only the last fire throat was left, Wang Yong wrapped his true qi in his hands, and then lightly feared it on the ears of the refining furnace.

I saw that the bottom of the refining furnace suddenly bounced upwards rapidly, and the empty molten iron inside was ejected out of the refining furnace. Wang Yong had already prepared, picked up a spar pot that had been prepared a long time ago, caught the empty molten iron without leaking, and then put it aside, waiting for it to cool naturally.

Then. The bottom of the furnace has returned to normal, and the part that just bounced off has become tightly closed, and there is no trace to be seen.

Wang Yong looked at the still hot empty molten iron, and didn't want to waste time waiting, so Wang Yong grabbed the second ingredient, the magic crystal, and threw it into the refining furnace without hesitation.

With an unsurprising 'clang' sound. Wang Yong began to refine the materials again.

The material of the magic crystal is very special, it is not like metal, the purer the calcination, the better, and the magic crystal needs to remove the inferior substances inside, but other impurities are of great benefit to the refining of flying swords. Therefore, refining magic crystals can also be said to be the most critical and difficult to refine among all the materials for refining flying swords.

As for why refining the flying sword would require a material that is only available in this world, it is because the demon beast Neidan, which was originally needed to refine the flying sword, could not be found here at all. That's why the cloud piercing will be replaced by magic crystals. But the effect is similar.

And the reason why Wang Yong ranked the most difficult material to refine the magic crystal in second place was because Wang Yong had great confidence in himself. It can also be said that he has great confidence in his own divine sense.

It is recorded on the jade slip that the temperature of refining magic crystals should not be too high, so Wang Yong only opened three fire throats, and then used his powerful divine sense to wrap the melted magic crystal liquid, constantly flipping and stirring, so that it can be evenly calcined.

This process was very long and consumed divine sense, and after nearly two hours of calcination, the magic crystal liquid could meet the requirements of the refining weapon.

At this time, Wang Yong was already exhausted, and reluctantly took out the magic crystal liquid in the refining furnace, and then didn't think about anything, and fell asleep.

Wang Yong opened his eyes again, and the first thing he did was to check the materials in the two spar pots, the empty dark iron was no longer dark, but turned into a dazzling silver, although the volume was reduced by half, but the weight was not reduced much.

The magic crystal liquid has also solidified, not only is it purer but also has an excellent feel, turning into a dark blue color magic crystal, just like a clear night sky, it looks so deep and charming.

Wang Yong was overjoyed, this form of the magic crystal was exactly the same as the one recorded on the jade slip, he didn't expect that he would successfully refine the most difficult part for the first time.

Wang Yong took a deep breath, and with the success of refining the first two materials, Wang Yong's confidence increased greatly, and he grabbed the third material, silver essence, which is what this world calls Mithril, and threw it into the refining furnace to start refining.

According to the records in the jade slips, the material Mithril only needs to be heated at a low temperature and then refined into quicksilver. Wang Yong only opened three fire throats and melted Mithril, but when the Mithril Water had just melted, a puff of white smoke unexpectedly came out, and all the Mithril Water turned into a charred black.

Wang Yong stopped refining, took out the charred Mithril water, and looked at the black liquid in front of him in a daze, thinking about all the steps just now, trying to find out what the problem was.

But Wang Yong recalled it many times in his mind, and he didn't find any negligence or omission, and in the end he could only attribute the reason for the failure to the temperature.

Fortunately, Mithril may be rare for other people, but for Wang Yong, a big landowner, although it is not so much that it can be squandered at will, it is still no problem to get one hundred and eighty catties.

Wang Yong took out another piece of Mithril and threw it into the refining furnace, then preheated and warmed it, and each step was carried out in an orderly manner according to the annotations on the jade slip.

However, when Wang Yong opened the third throat, the Mithril melted and began to melt, and before Wang Yong could take a closer look, the Mithril Water emitted white smoke again, and then became black.

Taking out the scorched Mithril water, Wang Yong frowned, there was no mistake in any step just now, and there should be nothing wrong with opening the third throat to heat it. Because opening the second throat can only heat up the Mithril, there is no way to melt the Mithril, and only by opening the third throat can the Mithril be melted.

Wang Yong doesn't believe in evil, and if he continues to experiment, he doesn't believe that the most difficult place can be reached, and this simple material can't be refined by himself. So, the sad refining process began, experimenting again and again, failing again and again, but Wang Yong persevered in repeated defeats and repeated defeats, and entered a vicious circle.

In the continuous failure, Wang Yong's brows became tighter and tighter, and just when Wang Yong's emotions were about to get out of control because of depression, suddenly a trace of clarity flashed in his mind, allowing Wang Yong to get rid of the endless vicious circle in time, just staring blankly at the large pile of black Mithril in front of him for a long time.

After a long time, Wang Yong sighed, ran the Xuangong Clearing Technique, closed his eyes and breathed, and kept repeating every process of refining Mithril in his mind.

I don't know how long it took, Wang Yong suddenly opened his eyes, and once again threw a fist-sized piece of Mithril into the refining furnace to warm up, his eyes full of solemnity.

When the Mithril was preheated, Wang Yong did not directly open the third throat as before, but first wrapped the Mithril block with his divine sense, and then opened the third throat.

When the surface of the Mithril block began to melt, Wang Yong closed the third throat in time, and let the Mithril melt little by little with the help of the residual temperature in the furnace.

When the temperature inside the furnace is too low to melt Mithril, Wang Yong will open the throat again to increase the temperature in the furnace, and when the Mythril melts again, he will turn off the throat again.

In this way, I don't know how many times it was repeated, when all the Mithril melted into a liquid state, Wang Yong grabbed the fourth ingredient - Xijin powder and threw it into the refining furnace, and then used his divine sense to evenly fuse the Xijin powder with Mithril water, and after another heating up, Wang Yong carefully took out the Mithril water and put it in front of his eyes to take a closer look.

Wang Yong kept blowing the wind against the Mithril water, which quickly cooled down the Mithril water, and finally, looking at the Mithril water that had cooled but did not solidify, Wang Yong laughed out loud, because after N failures, he finally succeeded in refining the quicksilver and found a way to refine the Mithril.

Next, Wang Yong refined more than a dozen other materials one by one, or smelted them separately, or smelted several materials together, and after several failures, finally all the materials were refined.

In front of Wang Yong, there were only six kinds of refined materials, Empty Shadow Iron, Ink Crystal, Quicksilver, Cooking Gold, Heption Gold, and Colorful Stone Solution, these were all the materials for refining the flying sword.

Because what Wang Yong wanted to refine was only a low-grade magic weapon-level flying sword, there were not many materials needed, and it didn't take so much time to refine. If it is a magic weapon that can only be used above the Jindan period, there are more materials needed, and it takes a long time, so don't even think about it for a year and a half.

The next step is to make the sword blank, because Wang Yong's strength is not enough, he can't control the material to hang in the air, and at most he can only let it rotate in the furnace, so Wang Yong can only make the sword blank by hand.

If Wang Yong can control the dynamics of the material, then he can finish the sword blank when the material melts, and the sword blank will be better that way.

Wang Yong picked up a large piece of gold and threw it into the refining furnace, constantly heated it to melt, and made a grinding tool for a sword embryo out of hedron.

When the food is melted into liquid, Wang Yong pours the liquid into the mold, which is very simple, similar to pouring iron pipes, but the materials are different.

But the next thing to do is a lot more troublesome, because after Wang Yong polishes the sword blank, he needs to engrave many formations on the sword blank, which is also the core of the flying sword.

To put it bluntly, other materials are used to strengthen the material of the flying sword, making the flying sword harder and sharper, and the formation carved by the seal is the soul of the flying sword. (To be continued.) )