One person: I, Daoist Master, am a cultivator of immortality!

Sun Yao conjured the Heaven and Earth Furnace out of thin air, but this time it was very different from the Heaven and Earth Furnace he had used before. This time, the Heaven and Earth Furnace was crimson gold, because Sun Yao used Samadhi True Fire to cast it, so the overall crimson gold color was actually the color of Samadhi True Fire.

Sun Yao infused the earth's fiery energy into the Samadhi True Fire, using it to sustain its combustion and greatly reducing his own spiritual energy consumption. He then used his spiritual energy to control the continuous feeding of cold iron and meteorite iron into the Heaven and Earth Furnace. Soon, under the scorching heat of the Samadhi True Fire, the cold iron and meteorite iron were melted into molten iron.

However, after dissolving all these materials into liquid, Sun Yao encountered a real problem: casting. Sun Yao initially thought that he could simply replace the materials to complete the casting of the entire Guixu Cauldron, but in practice, it was not that simple at all.

If the Guixu Cauldron is to be reforged, it must be completely melted down. There is no way to reforge it without destroying the original cauldron body. If that were the case, the Guixu Cauldron would only be wrapped in another layer of material. In the end, it would still be an ordinary medicine cauldron and would not be able to be reforged into a magic weapon or a magic treasure.

Since that was the case, there was no other way but to reforge the entire Guixu Cauldron. Sun Yao placed the Guixu Cauldron into the Heaven and Earth Furnace, and in no time, the entire Guixu Cauldron turned into a pool of molten copper.

The Guixu Cauldron was ultimately made of copper essence supplemented with South China Sea dragon fire. In terms of material, it was inferior to cold iron and meteorite iron, so its melting speed was actually much faster than that of cold iron and meteorite iron.

After melting the Guixu Cauldron, Sun Yao began experimenting with the fusion ratio of the three metals. However, after several attempts, he was unable to fuse the molten materials together. No matter how he tried, there were always layering, mottled patterns, and other issues. Sun Yao experimented for a full hour, only to have to rework the cooled materials several times to remelt them back into a liquid state.

Sun Yao experimented many times, even trying the forging method of hundred-refined steel to combine the three materials, but it was all unsatisfactory. The project to recast the Guixu Cauldron had reached a bottleneck, and Sun Yao was also getting irritable. When he got angry, he even slammed down a small hill next to him.

After using his fire-based magic to maintain the Heavenly Furnace, Sun Yao looked at the mirror-like Heavenly Pool. The pool's crystal-clear water always seemed to wash away his worries and bring him into a state of calm. Just as he was enjoying the beautiful scenery, a bright light flashed before his eyes, causing them to involuntarily close slightly. He shifted his position and looked in the direction from which the light had been reflected. There, he saw a piece of material the size of a gold nugget—yes, it was the Heavenly Star Copper left behind by Second Master Liu.

"I remember this should be the meteorite copper guarded inside the Zhang family's bronze gate. Judging from the function of those three meteorite copper pieces, these meteorite copper pieces have the ability to realize illusions. So, judging from this size, it should be enough to affect reality. If we use it as the basis to construct a pill furnace, wouldn't we be able to successfully forge a pill furnace that is unprecedented and unparalleled?"

Upon realizing this, Sun Yao immediately became excited. This thing's abilities were practically a panacea; using it as a foundation, it might be possible to perfectly forge a magical artifact or even a magical treasure.

Sun Yao raised his hand and drew the Celestial Copper into his palm. He then placed it into the liquid materials, which quickly and visibly transformed into a golden liquid. This liquid was golden, clearly neither the color of cold iron nor meteorite iron, nor the color of copper essence. At this moment, the liquid had fused into a special alloy under the influence of the Celestial Copper. Regardless of its name, it was evident that this metal, in terms of strength, load-bearing capacity, and everything else, was many times stronger than the original three metals.

Now that the material issue has been resolved, the next step is casting. To cast a pill furnace, a mold is needed, but where is Sun Yao supposed to find one?

Sun Yao didn't have a mold, of course, but making one on the spot wouldn't hurt. He used golden light to condense the shape of a pill furnace. This furnace had three legs, but its top resembled a Boshan furnace. Atop the furnace, a celestial mountain was entwined with dragons and phoenixes soaring. Small openings on the furnace were used for refining pills and burning energy. During the refining process, flames would burst forth from these openings, further enhancing the celestial mountain's appearance, as if celestial fire were irresistibly erupting from its belly.

Now that he had designed the furnace using the golden light technique, the next steps were to pour, cool, and inscribe runes. The entire mass of molten gold was poured into the mold formed by the golden light, and a massive furnace, over two meters tall, took shape before his eyes.

He continuously began to inscribe runes on the walls of the alchemy furnace using the Tongtianlu technique, controlling the fire, temperature, and sealing (to prevent the loss of medicinal power), adjusting the size as he pleased. He even inscribed runes for toughness and suppression on the furnace, seemingly intending to use it as a magical artifact to suppress people.

After he finished inscribing all the details, Sun Yao finally used the Fire Element Technique to control the temperature of the alchemy furnace, and then, at the right moment, quenched it with the spiritually rich water from the Heavenly Pool. The alchemy furnace was now complete. However, it was still unclear whether this furnace should be considered a magic tool or a magic treasure. After all, the concept of magic tools existed in this world, but the term "magic treasure" was very rare; in fact, no one really knew what constituted a magic treasure. Nevertheless, Sun Yao felt that his alchemy furnace should already be considered a magic treasure, but without a comparison, he couldn't make a hasty conclusion.

This alchemy furnace is forged from celestial copper. With the help of celestial copper, the probability of successfully refining pills in this furnace is greatly increased by 50%, and most importantly, the effects of the pills are also amplified by 20% to 30%.

"Since you are made from Celestial Copper, then I will call you Celestial Torch."

Sun Yao named the furnace Heavenly Star Torch, and then poured all the remaining earth vein fire energy into it. Refining the Heavenly Star Torch had already consumed nearly half of the earth vein fire energy in the Heavenly Pool's earth fire veins, but the remaining half was still considerable and should be enough to help him complete the final steps of the Heavenly Star Torch.

After Sun Yao poured all the earth vein fire energy into the Heavenly Star Torch, he used all his spiritual energy to condense a seed of Samadhi True Fire and threw it into the Heavenly Star Torch. The next moment, with the help of the earth vein fire energy, the seed of Samadhi True Fire burned fiercely in the Heavenly Star Torch, and Sun Yao's Samadhi True Fire successfully became the furnace fire of the Heavenly Star Torch.