Hmm, it really wasn't that easy to leave the Demon City tonight.
Du Feng first picked up a purple crystal and looked at it. It was extremely cold to the touch, and it felt like it could freeze a person's finger joints. If an ordinary person held it in their hand, it would immediately stick because it was too cold. Fortunately, Du Feng knew demonic arts. He transferred demonic qi to his hand to cool it down.
When the temperature of his hand was about the same as the purple crystal, or even colder than the crystal, it naturally wouldn't stick.
Good stuff. Du Feng pinched it with his fingers and tested it. The purple crystal was very hard. If there were large pieces, they could be used as weapons after being polished. However, the ones placed here were all small pieces. It was impossible to polish them into a sword.
How could such a hard thing be fused together and cast into a sword that conformed to the standard?
Du Feng decided to study the smelting furnace first. Perhaps this smelting furnace had some unique functions. He tried to inject demonic qi into the furnace, and soon purple flames appeared in the furnace. The flames weren't hot, but they were very cold. Even through the furnace, he could feel the chill inside.
Interesting. In the past, Du Feng used a high-temperature furnace to melt ores and then forge all kinds of weapons or armor. Today's furnace was strange enough. It actually relied on cold air to melt the crystal. The more demonic qi he injected, the more cold air there was inside, and the more vigorous the cold fire would be.
He had already figured out that these purple crystals were melted by the cold fire in the furnace. Then, he would draw out the melted crystal water from the track on the side and flow into the sword embryo grinding tool.
Since he had figured it out, he began to work. Du Feng wasn't in a hurry to throw all the purple crystals in at once. Instead, he threw them in one by one. When he saw that one was almost melted, he threw it in. The next moment. The amount of demonic qi he injected was also controlled to a certain extent to prevent the furnace from going out of control.
He often observed the situation in the furnace. When he saw that the amount was not much, he stopped filling in the purple crystals. His hands kept injecting demonic qi into the furnace, making the cold fire in the furnace burn more and more vigorously. The purple crystals turned into dark purple crystal water. After being continuously burned by the cold fire, some of the impurities were slowly expelled.
Ordinary ores, after being calcined at high temperatures, would burn some of the impurities into a gaseous state and then evaporate. And these purple crystals had been burned at a very low temperature. Some of the impurities would be frozen into a gaseous state and evaporate. However, the gaseous substance had just evaporated from the furnace and quickly solidified upon contact with the air.
Therefore, Du Feng had to constantly clean up the volatile impurities to avoid affecting the quality of the forging.
When there were no more impurities, Du Feng knew that the time was right. He immediately guided the crystal water out and let it flow into the sword embryo grinding tool. Since this kind of crystal liquefied under extremely cold conditions, it would naturally solidify when the temperature was raised.
Therefore, the process of cold quenching of ordinary weapons became hot quenching here. Du Feng was already able to control the Phoenix Clan's Immortal Fire. As his Cultivation level increased, the power of the Immortal Fire would also increase. Therefore, he simply spouted the Undying Fire on the sword embryo, allowing it to quickly solidify.
Then, he brought it to the forging table and began to hammer it repeatedly with a big iron hammer. When the forging was almost done, he would return it to the furnace to make it semi-soft before taking it out to continue forging. This repeated forging process could allow the sword body to be continuously compressed. The material density would thus increase, and the sword body would naturally become stronger.
Just like that, he busied himself until dawn, and a purple translucent crystal sword was finally completed. There was only one last step left, and that was to infuse it with magic. Infusing magic was the same as infusing spirit. The only difference was that it was not true essence but demonic qi that was infused.
Du Feng did not lack demonic qi, and what he had was the authentic demonic qi. Waves of demonic qi were infused from the sword hilt, and the purple crystal sword was activated. The current situation of the demonic qi directly affected the smoothness of the demonic technique when using the sword in the future.
Du Feng did not dare to be careless. He silently thought about the Mysterious Underworld Three Styles while continuously infusing the demonic qi inside. The Mysterious Underworld Three Styles naturally affected the flow of demonic qi inside the purple crystal sword. This kind of flow could form a special kind of vein. And this vein was the dark pattern on the sword body. It could not be seen normally, but once it was used, it could be seen.
"Done!"
When it was done, Du Feng handed the purple crystal sword to Sorceress. This sword was forged into a supreme-grade instrument. Actually, with Sorceress's Cultivation, she could not use it at the moment.
Du Feng did not care that much. He just wanted to forge the best thing with the current materials and conditions. As for whether Sorceress could use it, that was her own business. Even if she could not use it now, she could use it if she had it. A high-tier weapon was always better than a low-tier weapon.
"You are indeed a talent. Do you want to consider developing in the Devil Realm? I can get grandpa to introduce you to the Universal Eight Desolate Demon Group. It will definitely be beneficial for you. "
Sorceress's eyes lit up as she held the newly forged purple crystal sword. This sword was really good. It was better than what she had imagined. Du Feng knew how to do business, understand formations, and sell the elixirs that he refined. Now, he had personally forged a sword in front of her. She could not miss out on such a talent.
"When there is a chance in the future, I will make a trip to the Devil Realm. Not now."
Du Feng did not reject her bluntly because he was not the kind of person who hated evil when it came to demonic cultivators. After all, he also practiced demonic arts and got along well with some of his friends in the Devil Realm. Previously in the Dark Clouds Region, many demonic cultivators treated him as their pillar of support.
"That's good. If you go, remember to join the Universal Eight Desolate."
Originally, Du Feng was not interested in this Universal Eight Desolation. However, the female demonic cultivator repeatedly mentioned it. Therefore, he asked her what kind of organization this so-called Universal Eight Desolation was.
This question was not a big deal. The so-called Universal Eight Desolate of the Devil Realm was actually an organization similar to the Heaven Realm's Adjudicator. They had very high adjudicator power and could deal with others as they pleased. This also meant that in the Devil Realm, as long as the Universal Eight Desolate felt that someone was guilty, they would send someone to kill that person. Regardless of whether it was a Clan Head or a Sect Head of a large sect, they would not give them any face.
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