Immortal weapons, with the word "immortal" on them, would rise to another level. If Du Feng had forged an ultra-quality innate weapon in a few days, it wouldn't have been a big deal, and Niuer wouldn't have thought that he was powerful. But an immortal weapon was different, because Niuer couldn't forge an immortal weapon yet.
"Brother, you're not here to tease me, are you? Do you still need me to teach you such a high level? "
Niuer really felt that Du Feng was here to tease him. You've even forged an immortal weapon, why do you still need to learn from me?
"I'm lucky, I'm really lucky."
Du Feng was indeed lucky this time, but the key problem was that he still had to learn how to upgrade weapons with crystal salt, so he couldn't be too proud.
"Well, I'm just kidding."
Niuer originally planned to wait for Du Feng to pick silt and then show him how to upgrade weapons with crystal salt after he won. In this case, it was better to strike while the iron was hot. He wouldn't make an immortal weapon, but he had no problem upgrading an innate weapon. Now that the Dragon Riding Sword was a middle-grade innate weapon, he could help upgrade it to a high-grade innate weapon.
"Haha, you're finally willing to do it."
Of course, Du Feng was happy, because he could finally learn this method. With this method, he could also figure out how to upgrade an immortal weapon in the future.
Niuer, who had been smiling just now, suddenly became serious. He mysteriously took out an iron bucket, which was much smaller than the one used to carry silt, and was about the size of the bucket used by ordinary families to carry water. He didn't know why he took out this iron bucket. Was it a special liquid for quenching?
As soon as the lid was opened, Du Feng's eyes widened. It was a bucket full of precious crystalline salt.
"How is it? It's all what I've accumulated over the years."
Niuer patted his chest proudly. He had indeed earned these crystal salt through his own labor. Some of them were made by queuing up to fetch water, and some were exchanged with the points earned from picking silt. A full bucket of crystal salt was worth a lot of money.
"Do you need so much crystal salt to upgrade a weapon?"
Du Feng pursed his lips, feeling that it was a little extravagant and wasteful. If he had to spend so much Crystal Salt just to upgrade a Mid-Grade Connate Magical Weapon to a High-Grade Connate Magical Weapon, wouldn't the price be a little too high? Even if he were to upgrade a High Grade Connate Magical Weapon to a Superior Grade Connate Magical Weapon, it wouldn't be worth it either.
"Haha, just watch carefully. I will only demonstrate once."
As he spoke, Niu Er took out a high-grade Innate Magic Weapon. It was neither a saber nor a sword, but an iron pole. This iron pole looked exactly the same as the one he had used to carry the silt, but it was of a higher grade.
Tsk, tsk, tsk … It seemed that Niu Er was very confident in his skills. He was actually demonstrating with a high-grade Connate Magic Tool. If it was successfully upgraded, it would become a top-grade innate magic artifact. Although it was still incomparable, it was still not bad.
Niuer first put the iron shoulder pole into the furnace to be calcined. While calcined, he also crushed a crystal salt into powder and slowly sprinkled it in. During the calcination process, the temperature couldn't be too high, or the weapon couldn't be melted into molten iron. However, the temperature couldn't be too low, or the weapon wouldn't be able to burn through if it was too low. It had to be red to be effective.
The whole process lasted about an hour, during which Niuer consumed a total of three Crystal Salt. All of them were crushed into powder and sprinkled in evenly. It felt like adding seasoning. This was probably how pepper was sprinkled when eating barbecue.
After the calcination process was over, he quickly picked it out with a pair of big pliers. The next thing was naturally to put it on the forging table and beat it. During the beating process, the shape remained the same, and it felt like he was knocking the matter that had just been sprinkled in.
After beating it repeatedly for a period of time, the sword slowly cooled down. Then, he needed to put it back into the furnace and continue to calcine and heat it up. During the calcination process, he also needed to sprinkle salt in.
After the process of calcination, sprinkling salt, and beating was repeated three times, nine Crystal Salt had been consumed. When it was calcined for the fourth time, he didn't sprinkle salt, but burned it until it was red and about to melt. He took it out while it was still hot and quickly inserted it into the bucket full of Crystal Salt.
There was no water in it at all. It was densely packed with Crystal Salt. After it was inserted, white smoke immediately came out, and it also had a strange smell. After the upper half was inserted for a while, he inverted it and inserted the lower half. He changed it repeatedly until the whole weapon cooled down.
When it was completely cooled down, Niuer put the iron shoulder pole back on the forging table. This time, he used a small hammer and quickly beat it from beginning to end. The big arm didn't move, but the forearm swayed slightly, mainly using the strength of the wrist to vibrate at a high frequency.
This kind of vibration was not random, but had a certain frequency. After a certain number of times, the whole blacksmith shop made a buzzing sound, as if the surrounding space was resonating with it.
Amazing, how did he discover this method? The whole process of calcination, sprinkling salt, and beating seemed very simple, and anyone could master it. But the first person to invent this method was definitely a forging genius.
Of course, it was easy to learn by watching others do it, but it was really difficult to come up with a method by yourself. There was only one place that Du Feng didn't agree with, and that was, when it was inserted into the Crystal Salt to cool, it had to be constantly flipped from both ends. If it was a large vat of Crystal Salt that was deep enough, it would be great to insert it all at once.
Well, Du Feng's idea was right. In fact, Niuer wanted to do that. But the problem was that a large vat of Crystal Salt was not so easy to get. Every time he sprinkled the powder, he had to consume several Crystal Salt. When it was inserted and cooled, although the Crystal Salt would not disappear, it was actually reduced overall. In other words, the amount of Crystal Salt consumed was also about 10. That was to say, this trip consumed about 20 Crystal Salt.
It took him a while to upgrade a weapon, and so far he hadn't been able to get a large vat of Crystal Salt. It could be said that storing a large vat of Crystal Salt was Niuer's dream.
"Hey, it's not difficult. I'll go hunting with you tomorrow."
Du Feng understood as soon as he heard it. It turned out that Niuer didn't know how to make money. It was one thing to have the technology, but it was another thing to turn it into money. Although Crystal Salt couldn't be bought directly with money, lake water had to be exchanged with Immortal Stones. The exchange price of a bucket of water was a second-stage Immortal Stone, and each person had only one bucket of water a day.
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