Seeing the expressions of astonishment on Xiao Yan's three companions' faces, the Yeold smiled and then waved his hand, saying, "Enter then..." Upon hearing this, the three nodded in agreement and, at the same time, moved their bodies swiftly, leaping onto the steep sand mountain. In a few flashes, they appeared before the spatial black hole. As they arrived, figures from around the area periodically came into view, pausing briefly to gaze at Xiao Yan and his party, before often lingering a moment longer on Cai Lin and Xiao Yi. However, those who had reached this point were no ordinary people—they clearly understood that only certain talents could access this place—and thus, few were foolish enough to deliberately approach and bother them. As for those glances, the Elder of the Medicine had paid no attention, simply stepping through the void and entering the spatial black hole directly. Behind him, Xiao Yan and the other two followed closely. At the very moment they entered the black hole, they clearly felt a strange force sweeping over them—gentle, almost like an examination. Xiao Yan and the other two nodded. To dedicate a special space solely for transactions was no small feat—though the space itself was modest, it was far beyond what an ordinary person could achieve. "Just take your time to browse," the herbal elder smiled. "There's hardly any ordinary goods here—everything is rare and excellent." Then he lifted his foot and walked down a street, and Xiao Yan and the others followed closely, their eyes constantly scanning the surroundings. "The Earth Demon Leg, an advanced Earth-tier combat technique..." "The Too-Xuan Technique, an advanced Earth-tier cultivation scripture..." "Form-Shaping Pill, a high-grade seventh-rank pill..." "Blood Spirit Ginseng, aged for a thousand years..." The street wasn't very long—only a few hundred meters. When Xiao Yan realized he had reached the end, he found himself still somewhat enchanted, his eyes wide with admiration. Simply on this street, he had been struck by no fewer than ten different things. Yet, though deeply moved, these things didn't offer him much practical value. After a brief inquiry, Xiao Yan therefore decided to abandon the exchange. These seasoned, shrewd elders offered items whose value was no less than what they themselves were selling. Xiao Yan's brow slightly arched as he recognized the object, murmuring a moment of realization to himself. This so-called seven-colored original stone is a variant of a special spiritual stone, closely related to the Seven-Color Sky-Eating Python. It is said that such stones only appear with a certain probability at the site where the Seven-Color Sky-Eating Python has perished. When these stones absorb the python's blood, they generate a unique energy—energy that is truly beneficial to the Seven-Color Sky-Eating Python. That is precisely why Cai Lin had paused to attend to it. Xiao Yan stepped forward slowly, glancing at the elderly man seated in a meditative posture behind the stone platform, who remained listless and silent, not even acknowledging the presence of Xiao Yan and his companions. "Sir, how may I exchange for the seven-colored original stone?" Xiao Yan asked calmly. Upon hearing Xiao Yan's question, the elderly man finally lifted his eyes slowly and replied, "Two eighth-grade pills, each with three or more colors of thunder essence." "Seems a bit on the expensive side, doesn't it?" Xiao Yan ran his palm over the seven-colored original stone. Though rare, it wasn't so rare as to be extraordinary, and its value was limited—useful only to the Seven-Color Devouring Sky Serpent, with no benefit to others. Thus, its price didn't quite match that of two eight-rank pills worth more than three-color Thunder Pills. Yao Lao stood by, arms folded, silent, only smiling as he watched Xiao Yan haggle with the thin, elderly man. "Then just keep it if it's too expensive," the elderly man replied, clearly having a strong personality, his tone hardly treating Xiao Yan as a guest at all. Xiao Yan could only roll his eyes, though he hadn't quite reached the point of frustration yet. After all, these years of cultivation had demanded more than just a little patience—otherwise, he truly would have fallen short of honoring the years of rigorous training he'd endured. While Xuanyin was about to prolong the conversation, Cai Lin suddenly grasped his hand, her slightly cool, slender jade fingers gently writing a single character on the palm of his hand: "Buy!" Xuanyin was momentarily taken aback by her action. He knew Cai Lin was no simple woman. Though the seven-colored original stones were precious to her, they were not something she couldn't part with—yet she still insisted, and even quietly conveyed this message to herself. That was certainly worth pondering. Nevertheless, though he had received her message, Xuanyin did not immediately change his tone. He continued to linger with the thin, weary elder, prolonging the exchange until the latter grew visibly impatient. Then, he tossed a jade bottle over and seized the seven-colored original stones at the same time, before pulling Cai Lin and turning to walk away. At the sudden surge of remarkable dexterity displayed by Xiao Yan, the thin, elderly man was also taken aback. He reached for the jade vial before him and examined it carefully, equally astonished. After a moment, he furrowed his brows, gazing at the retreating backs of Xiao Yan and the others, feeling an inexplicable sense of something being off. "By the gods, has old man here finally made a mistake in judgment? But that's clearly a seven-colored original stone—how could Xiao Yan have?" the thin elder murmured, puzzled. Yet, clearly, no one came to explain his confusion. "Hmm..." Color-Scale took the seven-colored primordial stone, a gentle smile blooming on her otherwise cool and composed face. "Common people know that where the bodies of seven-colored Sky-Eating Snakes have perished, there is a chance for seven-colored primordial stones to form. Yet they are unaware that if the bodies of more than a hundred seven-colored Sky-Eating Snakes perish at the same location, there is a chance for eight- or even nine-colored primordial stones to emerge. However, it is nearly impossible for over a hundred such bodies to fall at one place, which is why common people are largely familiar only with seven-colored stones, and rarely know of eight- and nine-colored ones. "Heard this from Cai Lin, even the Ye Lao was somewhat astonished—clearly, this had never been mentioned before. 'It's no wonder only you recognized it,' Xiang Yan chuckled, shaking his head, then with curiosity adding, 'So, is this original stone eight-color or nine-color?'” The iridescent scales of the crimson scales gently brushed against the jade finger, and a drop of blood fell onto the original stone. Upon the seventh vibrant pattern on the stone's smooth surface, a new colorful streak slowly emerged, as if pulsing to life. "To truly discern the number of colors in this stone, one must use the blood of the Seven-Color Devouring Sky Serpent..." "An Eight-Color Stone..." Seeing this, Xiao Yan felt a touch of regret. If it had been a Nine-Color Stone, the crimson scales would truly have reaped a substantial gain. Of course, he knew he was being overly optimistic—Eight-Color was already quite exceptional. With proper utilization, it would undoubtedly bring significant growth to the crimson scales' strength. Though only one color apart from Seven-Color, the energy contained within the Eight-Color and Seven-Color stones was vastly different. "Hmm, if that old man knew about this, he'd probably spew out a whole mouthful of blood right away..." The Elder of Medicine smiled, pleasantly surprised that even at their very first appearance at the Spatial Exchange Fair, they had already secured such a promising start.