A spacious chamber, soft light spreading evenly to every corner, completely banishing the darkness. Against the wall near a corner stood a flat bed, upon which Xiao Yan sat in meditation. Before him were various herbs, carefully arranged and preserved—rare indeed. If placed in Black Corner Domain, they would surely fetch excellent prices, and the quantity was so abundant that it truly underscored the remarkable wealth of Han Feng. Glancing past the numerous herbs, Xiao Yan shook his head in amazement, once again marveling at Han Feng's fortune. Yet, despite this wealth, it all ultimately ended up being offered at a discount to him. "Among these herbs, the materials precisely match what's needed to prepare a batch of Fuzi Ling Dan," Xiao Yan said, after a moment of contemplation, with a touch of surprise. The Fuzi Ling Dan. Whenever he thinks of this medicine, Xiao Yan immediately recalls the Ice Emperor Haibo Dong of the Jama Empire—the first companion he ever had. Though this elderly man seemed rather cold and distant at first, he had earned Xiao Yan's strong regard, especially when, during the final moments when he was pursued by Yunlan Sect, Haibo Dong still managed to lend him a helping hand. That alone made Xiao Yan deeply grateful. Thus, the debt of medicine owed to Haibo Dong has remained firmly in his heart. In the past, he lacked the strength to create the medicine. After emerging from the depths, though his strength had grown sufficient, the herbs he had painstakingly gathered over time had vanished completely during his underground journey. Now, seeing that such a complete set of ingredients for crafting the Fuzi Ling Dan is available here, Xiao Yan naturally thinks of Haibo Dong right away. "Heh, of course the herbs are sufficient. Then let's prepare the medicine for that old man right away. Otherwise, when we return to the Jama Empire, we might face questions and find it difficult to explain." Xiao Yan smiled gently, slightly shook his head, then raised his hand—immediately, a large, crimson cauldron surged forth from his Yuhai Storage Amulet and crashed down firmly onto the ground before him. The cauldron was substantial, adorned with various intricate patterns around its body. Carved in lifelike detail upon its surface were images of fierce beasts; when their massive mouths opened wide, one could almost hear a low, resonant roar emanating from within, as if merely listening closely. These subtle qualities clearly demonstrated the exceptional nature of this crimson cauldron. Naturally, this cauldron was not Xiao Yan’s own possession, but one bequeathed by Han Feng—seemingly a vessel used by the latter for alchemical crafting. "That fellow has been ruling the Black Thorn Domain with authority, securing numerous benefits," Xiao Yan remarked, lightly tapping the cauldron with his palm. The crisp sound of metal-on-metal resonance echoed pleasantly throughout the chamber, and he nodded with satisfaction, chuckling softly. Although Xiao Yan didn't know the origin of this crimson medicinal cauldron, he did know that the medicinal cauldrons he had used in the past—except for the Black Demon Cauldron listed among the "Heavenly Cauldron Rankings" by the Medicinal Elder—were likely nothing more than trash when compared to this one. Ember-green flames surged wildly within the cauldron, continuously radiating terrifying heat. Yet no matter how intense the temperature grew, the crimson cauldron remained utterly still—indeed, even though the interior was scorching, its outer surface remained as cool as ice. "A splendid cauldron!" Xiāo Yīn, his eyes blazing with admiration, finally broke the silence. Though he had not yet begun the actual process of refining pills, after this series of tests, he could already sense just how significantly this cauldron would aid in the art of alchemy. In fact, he could confidently assert that using this cauldron would undoubtedly improve the success rate of pill-making. For a pharmacist, what could be more compelling than a cauldron that enhances the success rate of refining pills? Amid the swirling emerald flames, the temperature within the cauldron gradually reached the degree required by Xiao Yan. In the meantime, he repeatedly reviewed the method for preparing Fuzi Ling Dan—the recipe, which Master Yao had originally passed down to him, had remained untouched by him until his early days of practicing pharmaceutical arts, due to his then-inferior skill. After mentally revisiting the recipe several times, Xiao Yan's mind finally settled. With a sweep of his sleeve, several herbs were skillfully launched directly into the roaring flames of the cauldron. As soon as the herbs entered the cauldron, they began to wither under the intense heat, visibly and rapidly. Though their branches and leaves wilted, a distinct liquid seeped slowly through the main stems. When the leaves finally turned to ash and drifted down, droplets of liquid of varying colors floated atop the emerald flames. Under the flames' gentle heat, these liquids slowly released their impurities. Of course, in past years, Xiao Yan would never have dared to be so carelessly ambitious. But now it's different. With his strength having surged dramatically and his mastery over flame growing ever more refined, and now equipped with the vibrant green flame formed by the fusion of the two unique flames, as well as Han Feng's inherited crimson medicinal cauldron, even when crafting sixth-rank pills, Xiao Yan's success rate would surely be quite high. As soon as the herbs were dropped into the cauldron, they instantly turned into powders or liquids, floating within it. Over time, the number of suspended liquid and powdered herbs within the cauldron steadily increased. The process of refining these liquids demanded particularly heavy consumption of spiritual energy. Such a substantial drain would likely be sustainable only by Xiao Yan among peers of the same level—others would hardly dare to undertake such an endeavor. His eyes were tightly fixed on the various liquids and powders floating within the medicinal cauldron. After a long while, the final herb was finally tossed into the cauldron by Xiao Yan. Once the last herb entered, Xiao Yan's expression grew increasingly serious. In the past, when crafting pills, he would naturally divide the process into numerous steps, carefully processing each herb. But now, he had seamlessly and completely poured all the herbs into the cauldron at once, maintaining distinct heat levels for each type—achieving a level of mastery that was utterly unmatched compared to his previous methods. The handprint shifted, and within the medicinal cauldron, the originally gentle, shimmering emerald flames suddenly erupted into an astonishingly intense heat—like a catalyst had been added—causing the medicinal liquids to vaporize rapidly under this intense temperature. As the liquids evaporated, the impurities they contained were completely extracted and refined. Staring at the emerging shape of the pill, Xiao Yan exhaled a quiet relief. Although the Fuzhilin Pill was a sixth-rank medicine, its crafting requirements were not particularly demanding. The pill's effects were quite unique—only a small number of people truly needed it; for most others, possessing it offered no real benefit. Thus, in terms of actual value, the price of a single Fuzhilin Pill actually fell short of that of a Douling Pill. After roughly an hour, a peculiar medicinal aroma and a surge of energy suddenly erupted from the cauldron, and only then did Xiao Yan slowly open his eyes. What he found strange was that the aromatic scent and energy fluctuations rising from the purple pills—vividly colored and dynamic—were entirely blocked by the crimson cauldron, no matter how vigorously they surged, unable to escape. "Can this cauldron actually conceal the unusual phenomena when a sixth-rank pill forms?" Xiao Yan was amazed at the cauldron's ability, and upon a moment's pause, he settled his astonishment. With a wave of his hand, the lid of the cauldron lifted automatically, and a purple pill, carrying a delicate fragrance, glided out and was gently caught by Xiao Yan, who then placed it into a pre-prepared vial. Gazing at the deep purple pill within the cauldron, shimmering like a precious gem, Xiao Yan smiled gently. The compensation he had promised Sea Bo Dong years ago had finally come to fruition only now. Nevertheless, he was deeply pleased to have successfully refined the Fu Zi Ling Dan, as achieving a sixth-rank pill—symbolizing his mastery as a sixth-rank alchemist—was already a significant accomplishment, even though this particular Fu Zi Ling Dan was one of the more basic sixth-rank pills.