A vibrant cascade of energy, resembling a rainbow slicing through space, carried faint ripples of spatial disturbance, and struck the immense, formless body of the invisible fire serpent with tremendous force. An explosive surge of energy erupted like a brilliant fireworks display, scattering across the serpent’s body. Gathering the full power of all the elite warriors from Black Horn Domain, this devastating assault was even too much for Su Qian to withstand directly. Though the invisible fire serpent had formidable presence, under such relentless blows, its massive form began to plummet rapidly, emitting furious, piercing shrieks that echoed across the sky. As they watched the retreating fire serpent, the warriors from Black Horn Domain beamed with delight. Yet, before this joy could spread, a more terrifying and scorching wave of energy surged suddenly from below. Startled, they lowered their gaze—and there, like a lightning bolt, the enormous body of the invisible fire serpent now stood before them. Its massive triangular eyes, blazing with intense heat, seemed poised to melt everything in front of it entirely. "Block it!" Seeing the intangible fire serpent surge forth once more, Han Feng's face tightened slightly, and he roared sharply. As soon as the roar echoed, the surrounding elite warriors swiftly redoubled their internal qi flow, yet before they could launch an attack, the monstrous maw of the surging intangible fire serpent suddenly opened, unleashing a column of flame that, though seemingly formless, instantly warped the very space around it. The intangible flame column sliced through the void, evaporating all air in its path, leaving behind a clear, visible trail in the sky that left everyone in stunned silence. "Move out of the way!" sensing the terrifying heat within the flame column, Han Feng shouted urgently. The flame column moved with the speed of lightning—just as Han Feng's call fell, it surged forward with tremendous force, crashing directly into the group of warriors encircling the Black Angle Domain. At the very instant the flame column surged forth, the stronger cultivators like Han Feng barely managed to evade it, yet even so, the flame passing close to them caused a sharp, intense burning sensation across their skin. "Ah!" Only those with slightly stronger capabilities escaped the flame column. Others, however, were struck directly, engulfed by the intangible fire that spread throughout their bodies. Despite the protective aura of their qi, they felt a searing, penetrating pain. In the sky, figures darted and flickered as a dozen black-angled domain cultivators frantically scrambled, struggling desperately to break free from the enveloping flame. "Help!" Han Feng called out, his eyes fixed on the black-angled domain cultivators affected by the fire. These individuals were crucial to his ability to obtain the Fallen Heart Flame—any loss would be unacceptable. As soon as his voice fell, Han Feng was about to move forward to rescue first, but a surge of intense heat shooting upward from below forced him to halt mid-action and look down—there, another flame sphere, no weaker than the one before, was bearing down upon him. "Damn it!" With clear awareness of the sheer destructive power of the flame column's wielder, Han Feng couldn't afford to be even slightly negligent. He swept his sleeve outward, and a powerful deep blue flame erupted from his body, eventually forming a vast blue sky-like canopy above his head. "Hah!" He swiftly activated a hand seal, pressing his palms firmly against the surging flame column below. Instantly, the blue canopy of flame swept down in a sweeping wave, cascading like waves rolling across a sea, layer upon layer, until it collided forcefully with the intangible flame column. "Boom!" Two distinct hetero-flames collided with a thunderous roar, instantly exploding in the ears of every person present. At the very moment of impact, even the inner courtyard students could feel the temperature of the sky suddenly soar, with some dry leaves spontaneously catching fire at various points. "Han Feng, this strange fire is too powerful—our help may be limited. You possess the strange fire, so you're immune to its scorching heat. Therefore, you should first employ some tactics to weaken it!" Suddenly, a loud command rang out. Upon hearing this, Han Feng's heart sank immediately. Turning his gaze, he saw Master Jin and Master Yin standing far away, flanked by a large group of strong warriors from Black Horn Domain—clearly, the formidable assault launched by the formless fire serpent had already instilled fear in them. "A bunch of cowardly, self-preservation-minded fools!" Han Feng muttered again in his mind. Yet, he dared not make any significant movements. He knew that the formless fire serpent had now locked onto him. As long as he retreated even slightly, the serpent would pounce upon him instantly. "It seems we'll have to take some measures to slightly curb the momentum of the Falling Heart Flame, or else, given those people's cautious natures, they'll likely never step in again..." His thoughts raced swiftly. After a moment, Han Feng gritted his teeth, his gaze cold and fixed on the intangible fire serpent below. With a flick of his hand, two ice-blue jade vases materialized in his grasp. A jade bottle of ice-blue color suddenly burst, and instantly, a vast surge of blue cold air erupted forth, swiftly enveloping a wide expanse of sky. Within this range, the intangible fire serpent was fully contained. As the blue cold mist spread, the fire serpent seemed to sense an increasing unease; under the influence of the chill, the intangible flames rising from its body grew somewhat frail and thin. "This mist... can actually suppress the unique fire?" observing the fire serpent now appearing slightly more subdued than before, Xiao Yan was struck with astonishment. "This ice-blue mist—ah, it must be the 'Heavenly Cold Qi.' How rare it is! Its scarcity is no less than that of the Strange Fires. It only exists deep within the most frigid regions, and ordinary flames automatically extinguish when they reach a certain distance from it. Only the Strange Fires can withstand it. Even so, under the influence of this Heavenly Cold Qi, the power of the Strange Fires is somewhat diminished." The slightly astonished voice of the Elder Pharmacist echoed in Xiao Yan's mind: "I didn't expect him to have managed to obtain the Heavenly Cold Qi. Clearly, he must have put in considerable effort to secure the Strange Fires." "Then... might he have succeeded?" Xiao Yan furrowed his brow, hesitating. "Don't worry," the Elder reassured him. "Although the Heavenly Cold Qi exerts some suppression on the Falling Heart Flame, the Strange Fires remain the most devastating force in the world. Even under suppression, capturing and taming them would be extremely difficult." Hearing this, Xiao Yan finally felt a sense of reassurance, his gaze firmly fixed on the hazy mist, where the jade-colored flames slowly rose within his eyes—thus, the vague sensation completely vanished. "Hmph! Beast! No matter how intelligent you may be, you still cannot escape the fate of being captured!" Observing the somewhat weary Unconscious Fire Python within the mist, Han Feng felt a surge of joy, smiled, and once again, deep blue flames surged forth from his body, coalescing at his fingertips into a rapidly spinning flame drill. The flame drill spun furiously, emitting a continuous wailing sound that echoed across the sky. Despite being within the reach of the cold mist, the drill seemed unaffected—its intense heat still causing the space around it to warp and ripple. "Go!" With a gentle flick of his finger, the flame drill shot forth violently, its wailing sound like a child's cry, shaking the space along its path. "Whoosh!" The flame drill surged through the cold mist like a lightning bolt, finally striking the immense, formless body of the invisible fire serpent with the force of a flying drill. "Shriek!" The flame drill was momentarily blocked by the serpent's scales, then pierced straight through, sending out a piercing, furious roar that thundered across the clear sky. As the roar faded, a wave of terrifying energy surged forth from the mist, instantly causing everyone present to gasp. The temperature, which had been lowered by the "sky-cold air," suddenly surged again. As the temperature rose, the sky-cold air began to thin out, clearly losing its effectiveness as the unusual fire truly erupted. At the very moment when the sky-cold air had thinned completely, the invisible flames spread out like a celestial fire, sweeping across the heavens—directly impacting Han Feng, who stood closest. The sleeve robe sent out a deep blue flame that pushed back the invisible fire rushing toward it. Han Feng glanced downward, only to be startled to find the massive body of the invisible fire serpent completely vanished—gone without a trace. Frowning, he quickly scanned the surroundings, but wherever his eyes fell, he could only see the invisible flames sweeping in from all directions; the serpent’s form was nowhere to be seen. "Struck by this blow, a fountain of blood erupted directly from Han Feng's mouth, while his body itself surged forward like a projectile, shooting straight toward the ground. Xiao Yan stared in astonishment at Han Feng, who had just moments before been confident and triumphant—now reduced to this state so swiftly. The fallen Heart Flame truly was formidable. At that very moment, as Xiao Yan was still stunned, a sudden cry from Yao Lao echoed within his mind, causing his entire body to tense, his pores instantly contracting. 'Xiao Yan, hurry! That beast has turned its attention to you!'