Blackwind Caverns, Sealed Tunnel
The slow, deliberate thrusts gave way to a driving, hungry rhythm. The initial agony of her body being claimed was a distant memory, consumed by a firestorm of sensation that was both terrifying and addictive.
Su Linyue's hips, which had been pinned against the wall, began to meet his, a desperate, unspoken plea for more, for deeper, for faster.
Gu Xuan grunted, a low, guttural sound. He was no longer just a physician administering a cure.
The feedback loop of their union was intoxicating him as well. Her refined Frigid Yin, once a poison, was now a celestial nectar, nourishing his own Yang, making his penis feel harder, his energy more potent.
He pulled back almost completely, the head of his cock sliding past her swollen clit, drawing a sharp, shuddering gasp from her before he slammed back into her depths.
The sound of their wet flesh slapping together echoed in the small cave, a primal, frantic beat.
"More," she begged, the word torn from her throat, her nails digging into the hard muscle of his back. "Deeper."
He obliged, changing his angle slightly. His penis now rubbed directly against a sensitive spot deep inside her vagina she never knew existed—her G-spot.
A scream tore from her throat as a bolt of pure, white-hot lightning shot through her. Her inner walls clenched around him in a series of violent spasms.
The sensation was too much for Gu Xuan. He roared, a sound of pure male dominance, and drove into her with a final, frantic burst of speed.
The friction, the heat, the impossibly tight grip of her climaxing vagina—it pushed him over the edge.
A scream tore from Su Linyue's throat as her orgasm hit, a cataclysmic, soul-shattering release that sent her entire body into convulsions.
At the exact same moment, Gu Xuan roared, his body locking rigid as he flooded her womb with his hot, thick seed.
The instant it happened, the true union of the scripture was achieved.
A golden-silver vortex of energy erupted from their joined bodies, so powerful it cracked the very stone around them.
It was a violent, cleansing flood that surged through every meridian, shattering old limits and reforging their spiritual foundations.
Su Linyue felt the last of the Frigid Yin not just melt, but be utterly consumed and integrated into a new, perfect core.
The invisible barrier that had separated the Qi Condensation realm from the next level simply ceased to exist.
A powerful aura, dense and carrying the profound pressure of a higher realm, burst from both of them simultaneously, the raw power of their breakthrough undeniable.
They had reached the Foundation Establishment realm.
The aftermath was a panting, sweat-slicked silence. Su Linyue's body felt boneless, yet humming with a power she had only ever dreamed of.
She looked at the man collapsing against her, his face no longer a mask but flushed with exertion.
He was her savior, her man, the architect of her rebirth. A pact sealed not in blood, but in flesh and spirit.
Gu Xuan was the first to stir, pulling out of her with a wet slick sound. "We need to get out," he said, his voice husky. "They will be panicking."
She nodded, a new, unshakable confidence in her eyes. They dressed quickly, the earlier vulnerability replaced by a quiet, conspiratorial understanding.
They were partners now, bound by the ultimate secret.
They stood before the massive boulder and rockfall that sealed their tunnel. It was a solid wall of stone that would have been an insurmountable obstacle just minutes ago.
"Together," Gu Xuan said, looking at her. "Channel your new power to your hand. We strike as one."
Su Linyue took her place beside him. She took a deep breath, circulating her Qi flawlessly for the first time in a year. A powerful, silvery aura enveloped her hand.
Beside her, Gu Xuan's hand glowed with a potent golden light. Their auras, Yin and Yang, reached out and intertwined instinctively.
"Now," he commanded.
They struck the boulder in perfect unison.
It did not crack. It did not shudder. The massive rock simply disintegrated.
A shockwave of pure force turned the tons of stone into a cloud of fine grey dust, revealing the main cavern beyond.
On the other side, Li Wei and Zhao Feng were frantically clawing at the rubble, their faces streaked with dirt and tears.
"It's no use!" Zhao Feng was sobbing. "They're dead! We have to go back and report it!"
"Shut up and dig!" Li Wei roared, his voice cracking with fear and frustration.
Then, the wall of rubble vanished. They both froze, their mouths agape, staring in utter disbelief at the impossible hole that had just appeared. Through the settling dust, two figures emerged.
Gu Xuan and Su Linyue stood there, their robes disheveled, but their presence was utterly transformed.
They radiated an aura so powerful, so profound, that Li Wei and Zhao Feng felt an instinctive urge to fall to their knees. It was the crushing spiritual pressure of the Foundation Establishment realm.
A stunned, terrified silence filled the cavern. Li Wei looked from the vaporized boulder to the two disciples who were supposed to be dead weakling, his mind utterly failing to comprehend what he was seeing.
Gu Xuan calmly brushed a piece of dust from his shoulder, his face once again a mask of placid mediocrity, though his eyes held a new, chilling depth.
"We were lucky," he said, his quiet voice cutting through the silence. "Seems there was a weak point in the rock."