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"Shangxian can know that this sword-casting technique is only the easiest way to make weapons, although the speed is very fast, but the sword produced is only the most ordinary, whether it is in hardness or other aspects, it is not too strong, so most of the popular swords on the market now are not copper swords." The old blacksmith did not leave immediately, but raised such a question.

"Oh? You mean there are other swordsmanship? Ning Fan asked curiously.

"In addition to this sword-casting, the stronger ones have a hundred refining techniques, and there are stronger forging methods, and the swords made are far higher than this sword-casting techniques in terms of sharpness and tenacity, but Xiao Lao'er is not too proficient in these two techniques." The old blacksmith blushed as he spoke.

"Oh? Thank you for that, but do you know any swordsmiths who are proficient in this? Ning Fan asked casually.

"I don't know about this little old man, but I heard that there is a Zhang family in Hanshan City, and the hundred refining swords are very well cast, but the little old man has also heard about it and has not been there." The old blacksmith said as he thought.

"Cold Mountain City?" Ning Fan wrote down the name, and then asked Niu Lei to send the old man away.

Ning Fan was ready to learn the art of refining a hundred times, but it was not now, and he felt that since the Zhang family in this cold mountain city was so famous, it must not be so easy to invite, so it was better to have the opportunity to visit it in person.

But now, he still has to practice this sword-forging technique well, although the sword made by this skill is not too strong, but Ning Fan thinks that this is a foundation for him to learn swordsmanship, but it can't be ignored.

After sending off the blacksmith master, Ning Fan did not rest, and called Niu Xing to help continue to pull the bellows for the furnace, and he put another material into the furnace and began to cast the second sword.

Without the old blacksmith to guide him, Ning Fan carried out it cautiously this time, striving not to make mistakes, and it took nearly an hour, and finally did not fail, and made another sword blank again, but this sword blank, I don't know why, was a little inferior to the one he cast before, not only was it much rougher, but the shape was not very good-looking. Ning Fan was a little disappointed in his heart, but after all, it was made.

After thinking about it carefully, Ning Fan felt that the impurities should not be properly handled during smelting. After thinking about the countermeasures for a while, Ning Fan continued to cast the third one, this time the speed was much faster, and the sword blank cast was obviously much better, almost better than the first cast.

Seeing such progress, Ning Fan was very happy in his heart, and after thinking about it, he put the second not-so-good one back into the furnace, smelted it again, observed while smelting, and used his divine sense to test the difference between the molten copper this time and the other two times.

When the impurities were almost gone, Ning Fan found a problem, he found that the copper liquid seemed to be much less this time, and this amount didn't seem to be able to fill the model, what should I do? Do you want to give up this copper liquid?

Suddenly, a spiritual light flashed through Ning Fan's mind, can you add some more materials?

If you want to do it, it's just an attempt anyway, and it's also a retraining, and Ning Fan doesn't have any psychological burden.

Soon, Ning Fan poured some copper, as well as trace amounts of tin and lead, into the furnace according to the amount calculated by his divine sense, and ordered Niu Xing to continue to add fire and smelt.

Niu Xing, this guy, although he has cultivation, is still a little tired after pulling down the bellows of the day, and he has begun to wipe his sweat at this time. However, he didn't dare to disobey Ning Fan's order at all. Keep adding fire.

It's just that he has a small wish in his heart at this time, if only Ning Fan gave him this forged sword.

Although the old blacksmith said that this kind of sword is not very good, he still wants one, there is no way, he is such a person, otherwise he would not have pretended to be a ghost in front of Ning Fan for the sake of a courtyard problem.

Ning Fan ignored him, continued to smelt, and asked Niu Xing to add or reduce the fire from time to time.

Soon, the smelting was completed, and Ning Fan carefully poured the copper liquid into the model this time. Soon the model cooled down, and Ning Fan removed the clay, revealing the sword blank inside.

Just one look, Ning Fan's eyes lit up, and he found that the sword blank made this time was better than any previous casting, and even he felt that this sword blank was better than the one cast by the old blacksmith.

What's going on?

Ning Fan was stunned, even if he was confident, it was impossible for him to surpass the old blacksmith in such a short period of time, he had been doing it all his life.

What's going on here? This problem is obviously not a problem of experience, nor is it a problem of operation, although Ning Fan feels that he has divine sense, but he is still inferior to the old blacksmith in operation.

What's the problem with that? After thinking about it for a while, Ning Fan understood that the problem should be on this refinement.

If you practice this one more time, can you make the sword blank more refined?

With this question, Ning Fan began to cast the next sword again, after casting the sword blank, Ning Fan returned to the furnace again to refine, and added more materials to smelt again, when the sword blank was cast, Ning Fan looked at the sword blank, it was really very fine, such a sword blank, Ning Fan estimated that as long as it was slightly handled, it would be much better than the sword he cast for the first time.

In this way, Ning Fan cast the swords one by one, and cast them overnight, casting a total of twelve swords, and then stopped.

Selecting the best three of them, Ning Fan gave two of them to Niu Lei and Niu Xing, while the third one was kept for himself.

Niu Lei took the sword and thanked him with a smile, while as soon as Niu Xing got the sword, he was excited, and he thanked him unbreakingly. Ning Fan looked at these two people, and his heart was also happy, and there was a faint sense of accomplishment.

As for the rest of the inferior ones, Ning Fan put them away and dealt with them later.

The next day, Ning Fan did not forge the sword again, but returned to Kunyang Peak's own cave mansion and cultivated again.

The unexpected breakthrough before, although Ning Fan checked it, although there was no problem, he was still a little uneasy, and took a quenching pill to consolidate it.

After that, Ning Fan began to think back on the entire process of sword casting, not only to have a further understanding of this sword-casting technique, but also to have more understanding of the sword itself.

Ning Fan felt that he had made greater progress on the step of Ming Sword Nature.

It's just that it seems to be a little far from the realm of the first glimpse of the sword soul mentioned in the novella of "Yilong Thunder Light Sword".

According to the appendix of the novella of "Yilong Thunder Light Sword", as long as you master the low-level sword-casting technique, you can immediately start learning the high-level sword-casting technique. However, Ning Fan felt that at this time, although he had entered the door of sword casting, he still hadn't mastered some more profound things, such as the discovery of remelting the furnace to improve the quality of sword casting that he found yesterday, Ning Fan didn't figure it out now.

After some cultivation, Ning Fan rushed back to Niutou Mountain again, and he planned to continue practicing sword forging today.

This time, Meng Quanlong said that he would follow, he knew as soon as Ning Fan came back yesterday, and he also found that Ning Fan had made such a big breakthrough in just one day, what was going on?

He didn't ask, and Ning Fan didn't explain, but Meng Quanlong's curiosity was very strong, and he regretted a little that he had returned to the cave yesterday to cultivate. At that time, Ning Fan just said that he didn't need any help to cast the sword, and Meng Quanlong went back to the cave, and now he regrets it.

Since Ning Fan still had to forge a sword today, how could he not keep up? He decided that no matter what Ning Fan did in the future, he would try to follow him as much as possible. What did he stay by Ning Fan's side for, apart from that promise to bet, wasn't it so that he could learn something by Ning Fan's side?

Ning Fan saw that he insisted on coming, but he didn't persuade him, and set off directly.

When the two returned to Niutou Mountain again, Niu Lei immediately greeted him, and immediately ordered his outer disciples to go out to prepare materials.

"Uncle Niu, I came this time, in addition to continuing to forge swords, I also want to trouble Uncle Niu to help me inquire about the news of the Hanshan Zhang family mentioned by the blacksmith master yesterday." Ning Fan smiled and explained the intention.

"Do you want to study their casting techniques?" Niu Lei thought for a while and asked.

"Yes, since the blacksmith master said that the Hanshan Zhang family has better technology, of course I want to see it." Ning Fan nodded and said.

Niu Lei nodded when he heard this, but said again: "I understand what you mean, but I don't understand it." ”

"Oh?" Ning Fan looked at Niu Lei and didn't know what he meant.