The hidden cavern behind the thundering waterfall had transformed into an isolated sanctuary of profound martial evolution. Cut off from the academy, the factions, and the bloodthirsty predators of the Abyssal Trench, the two siblings existed entirely within the grueling, repetitive cycle of cultivation.
On the drier side of the cavern, Xiao Yu stood before a shallow pool of water that had formed from the mist of the cascade.
Her breathing was remarkably steady, matching the rhythmic crashing of the waterfall outside. Over the past month, the chaotic, terrifying frenzy that had originally accompanied her bloodline awakening had been thoroughly suppressed. The ambient, soothing aura radiating from the Mystic Aqua Spirit Ginseng—even while Yoriichi was absorbing it on the other side of the cave—acted as a perfect, passive anchor for her mind.
Xiao Yu extended her right hand, her azure whip uncoiling with a sharp snap.
'Do not force the cold,' Xiao Yu reminded herself, her internal monologue echoing Yoriichi's past instructions. 'Guide it. Water is fluid; ice is merely water that has found its absolute stillness.'
She channeled her Dou Qi. Instead of the wild, erratic bursts of freezing energy that had characterized her fight against the Da Dou Shi, a smooth, concentrated layer of frosty-silver light elegantly coated the length of her leather whip.
With a flick of her wrist, she lashed out toward the edge of the cavern entrance, where the roaring waterfall crashed down.
Crack!
The tip of her whip struck the edge of the rushing water. Instantly, a mesmerizing phenomenon occurred. The kinetic force of the strike, combined with the extreme Yin temperature of her Dou Qi, bypassed the natural laws of motion. A five-foot section of the thundering waterfall instantly froze in mid-air, forming a beautiful, jagged sculpture of solid ice hanging precariously over the abyss before the sheer weight of the water above shattered it into a million glittering diamonds.
Xiao Yu retracted her whip, a serene, confident smile gracing her refined features.
Her control was now profoundly stable. She could direct the flow of her ice for short, focused intervals, calmly commanding it with her will rather than letting her emotions dictate the output. She was no longer a victim of her own awakening; she was becoming its master.
Across the cavern, sitting motionlessly within the thickest veil of mist, Yoriichi was fighting a war of entirely different proportions.
Deep within his internal universe, the miraculous anomaly had survived. The single, microscopic strand of azure blue sparkle—the condensed essence of the Mystic Aqua Spirit Ginseng—had firmly rooted itself within the scorching, milky-white cyclone of his Dantian.
But Yoriichi did not stop there.
Maintaining his absolute, monk-like tranquility, he meticulously siphoned more essence from the glowing root resting in his palms. He fed it into the vortex, drop by agonizing drop.
Over the days, that single azure spark multiplied. Two sparks formed. Then four. Then eight. Like scattered glitter, they gathered together, creating a few distinct, resilient azure sparks of pure water-attribute energy that orbited the core alongside his existing crimson-gold sparks.
And then, something entirely unprecedented occurred.
According to the laws of the Dou Qi Continent, without a designated, high-tier Qi Method, a cultivator's absorption rate of worldly energy was strictly limited by their body's natural talent. But Yoriichi, through sheer force of will, had trapped two diametrically opposed elements—extreme Yang and extreme Yin—within the same contained space.
Fire naturally expands. Water naturally contracts.
As the two elements continuously pushed and pulled against one another inside his Dantian, they created a terrifying, unnatural cycle of internal pressure. They formed a microscopic, biological engine.
Whoosh!
A massive, invisible vacuum opened up around Yoriichi. The dense, water-aligned worldly energy of the cavern, which normally took hours to absorb, was violently sucked into his pores at a monstrous rate—nearly ten times faster than his previous limit. He was unknowingly forging the foundational mechanics of a custom, heaven-defying Qi Method based purely on elemental synthesis.
The influx of raw energy was staggering.
Boom!
His Dantian expanded. He silently ascended from a Four-Star Dou Zhe to a Five-Star Dou Zhe.
But the vacuum did not shut off. The opposing elements demanded more fuel to sustain their volatile orbit. The worldly energy continued to flood his meridians.
Three days later, another muffled tremor shook his body. Six-Star Dou Zhe.
A week later, Seven-Star. Then Eight-Star.
His cultivation was skyrocketing at a speed that would cause the Core Elders of the Jia Nan Academy to vomit blood in sheer disbelief. But to Yoriichi, this rapid ascension was not a moment of joyous celebration; it was an agonizing, life-or-death crisis of bodily integrity.
'Hold the vessel together,' Yoriichi commanded himself, his consciousness pushed to its absolute limits.
His internal focus was entirely dedicated to maintaining the structural integrity of his flesh. The sheer volume of Dou Qi rocketing through his pathways was tearing microscopic fissures in his meridians. Using his Transparent World vision, he had to manually, painstakingly weave his mental power into his physical body, acting as internal stitches to prevent his veins from abruptly exploding under the pressure.
He was constantly stabilizing his mind against the blinding pain, ensuring the fiery gold sparks and the azure blue strands didn't collide and detonate his Dantian.
Finally, as another full month slowly ticked by in the absolute isolation of the hidden cave, the violent vacuum inside him began to settle. The cyclone in his Dantian had reached its maximum physical volume. It was impossibly dense, heavy, and spinning with the terrifying momentum of a hurricane.
He had successfully reached the absolute limit of the realm.
Nine-Star Dou Zhe. Peak stage. He was now a half-step Dou Shi.
Yet, Yoriichi remained in his deep meditative trance. His body was pushed to the brink, and he needed an extended period of absolute stillness to allow his torn meridians to adapt to this monstrous new capacity. He slowed his breathing to one inhalation per hour, entering a state of suspended animation.
While Yoriichi rested in his profound trance, the cycle of martial progression shifted across the cave.