## Chapter 29: Breakthroughs And Mutations
The first scream came from the drainage canal behind the estate.
It was sharp, short, and ended too quickly to be human.
Li Tianchen was standing in the inner courtyard when he felt it—not the sound, but the disturbance that followed. A ripple of panic, raw and feral, surged through the thin qi currents near the ground. Something small had died. Something smaller had changed.
He closed his eyes.
"So it begins," he murmured.
Inside the estate, the night lights flickered once, then steadied. On the surface, nothing appeared wrong. The guards at the outer gate continued their patrols, unaware that beneath their feet, the soil itself was no longer inert.
Li Tianchen knelt and placed his palm against the stone tiles.
Qi responded.
Not violently. Not yet.
But it responded.
Tiny movements—erratic, newly awakened—spread like sparks in dry grass.
He withdrew his hand and stood. "The first wave is shallow," he said quietly. "But it reaches everywhere."
Footsteps approached behind him.
"Tianchen?" Ji Ruyan's voice carried concern. "What happened? I heard something… like metal scraping."
"It wasn't metal," he replied. "It was teeth."
She stiffened. "Teeth?"
"Rodents," he said. "Probably."
That did not reassure her.
He turned to face her fully. "Mother, I need you to wake Father and Uncle. Quietly. Tell them to keep everyone indoors tonight. No unnecessary lights. No wandering."
Her lips tightened. "Are we in danger?"
"Yes," he answered calmly. "But not from people."
She inhaled, steadying herself. "Then I'll do it properly."
As she turned to go, Li Tianchen added, "And if you see any animals behaving strangely—anything at all—do not approach them."
She paused. "Even the cats?"
"Especially the cats."
—
The Li estate had always had mice.
Every old place did. They lived in the walls, the storage rooms, the forgotten corners where grain dust settled and no one looked too closely. Usually, they were nuisances—quick shadows, harmless enough.
Tonight, one of them stood upright.
Its fur was patchy, eyes too bright, whiskers twitching as if tasting something invisible in the air. It did not flee when the stray cat approached. Instead, it hissed.
The cat froze.
The mouse leapt.
The resulting struggle lasted less than three seconds. When it ended, the cat lay still, throat torn open by teeth that should never have been that sharp.
The mouse stood over the corpse, chest heaving.
Then its body convulsed.
Bones cracked. Muscles twisted. The qi it had instinctively drawn in surged chaotically, burning away its life from the inside.
The mouse collapsed, dead.
Li Tianchen felt it all.
He exhaled slowly. "Low survivability," he said under his breath. "But the ones that endure…"
He did not finish the thought.
—
Across the city, similar scenes played out.
Cockroaches gathered in unnatural clusters, their shells darkening, limbs thickening before most of them ruptured and died. Stray dogs howled, some collapsing mid-howl as their hearts failed to handle the sudden strain. A few did not collapse.
A few endured.
A street cat leapt onto a fence it had never cleared before and stared at the moon with unsettling focus, pupils dilated, breath steady.
The world was experimenting.
Most subjects would be discarded.
—
Back at the estate, Li Tianchen moved swiftly.
He activated formation nodes he had quietly prepared days ago—not defensive arrays meant for battle, but subtle stabilizers. They thinned excess qi, guided flow downward, dispersed chaotic surges.
The estate became an island of relative calm.
Inside his room, Li Tianhao paced nervously.
"Brother," he said for the fourth time, "the dog at the back gate just growled at me like it wanted to talk."
"That's because it wanted to eat you," Li Tianchen replied, seated cross-legged on the floor.
"That is somehow worse."
"Tianhao," Li Tianchen said without opening his eyes, "sit."
"…Now?"
"Now."
Tianhao hesitated, then obeyed, sitting opposite his brother. "Is this about cultivation, or about the murder-mouse apocalypse outside?"
"Both," Li Tianchen replied.
He opened his eyes.
"The qi density has reached a temporary equilibrium," he continued. "It won't rise significantly for a short while. That makes tonight ideal."
"For what?"
"For breaking through," Li Tianchen said simply.
Tianhao's eyes widened. "You mean… both of us?"
"Yes."
Tianhao swallowed. "At the same time?"
"Yes."
"That sounds… reckless."
Li Tianchen smiled faintly. "It would be, if we were rushing. We are not."
He reached out and placed his palm lightly against Tianhao's chest. "The Nine Suns Overlord Scripture has stabilized within you. Your Fire Spirit Body has adapted faster than I anticipated."
Tianhao grimaced. "Is that good or bad?"
"It means," Li Tianchen said, "that if you hesitate now, the qi will stagnate and burn you from the inside later."
"…I hate when you explain things calmly."
"You'll hate the alternative more."
Tianhao took a deep breath. "Okay. Tell me what to do."
Li Tianchen withdrew his hand and sat upright. "First, understand this. You are not chasing power tonight. You are allowing what you've already accumulated to settle."
"That doesn't sound heroic."
"It is not," Li Tianchen agreed. "It is survival."
He guided Tianhao through the circulation pattern, correcting subtle mistakes, slowing him when instinct pushed too fast. As Tianhao followed, Li Tianchen divided his focus.
One part guided.
Another gathered.
Qi poured into Li Tianchen's dantian—not explosively, but with terrifying consistency. Layer upon layer compressed, refined, rotated. His foundation trembled, then steadied.
Qi Refining—fourth layer.
He did not stop.
Fifth layer followed, smoothly, almost silently. The suppression of the world pressed down harder, responding to the density he was forming.
Li Tianchen countered not by resisting, but by folding inward.
By the time the sixth layer barrier appeared, it was thin.
He waited.
Across from him, Tianhao gasped softly as heat surged through his meridians. "Brother… it feels like my blood is on fire."
"That means it's working," Li Tianchen said evenly. "Do not chase the heat. Let it pass."
Tianhao clenched his teeth. "You say that like it's easy."
"It isn't," Li Tianchen replied. "That's why you're not doing it alone."
Li Tianchen made his move.
He broke through.
Qi Refining—sixth layer.
The world responded instantly.
A pulse surged outward from his body, sharp and undeniable. The air vibrated. Tiles cracked faintly beneath him. For a split second, the estate seemed to inhale.
Then Li Tianchen acted.
He slammed his palm into the floor.
The formations activated fully.
The pulse collapsed inward, swallowed by layered dispersion arrays. What should have been felt for kilometers was crushed into a trembling confined within the estate walls.
Only one person felt it fully.
Tianhao's eyes flew open. "Brother—!"
"I know," Li Tianchen said. "Stay focused."
Tianhao obeyed, forcing his circulation to continue. The pressure from Li Tianchen's breakthrough became a catalyst rather than a threat. Fire qi aligned, condensed.
With a sharp exhale, Tianhao crossed his own threshold.
Qi Refining—second layer.
He collapsed backward, gasping, sweat soaking his clothes. "I— I did it?"
"Yes," Li Tianchen said, standing. His breathing was steady, but his eyes were sharp, alert.
Tianhao laughed weakly. "I thought it would feel… bigger."
"It will," Li Tianchen replied. "Later."
Outside, something howled.
Not a dog.
Too low. Too resonant.
Li Tianchen's gaze shifted toward the window.
The formations trembled—not from his breakthrough, but from something else pressing against them.
Tianhao followed his gaze. "Brother… please tell me that's just a regular animal having a bad night."
Li Tianchen did not answer immediately.
He extended his perception outward.
What he sensed made his expression turn cold.
One of the awakened animals had survived.
Not just survived.
It had adapted.
"Stay here," Li Tianchen said quietly.
Tianhao's voice shook. "You're going out there, aren't you?"
"Yes."
"Alone?"
Li Tianchen paused. Then, "For now."
He stepped toward the door, then stopped. "Tianhao."
"Yes?"
"Lock the door. No matter what you hear."
"…Brother?"
Li Tianchen looked back, eyes steady. "Tonight is only the beginning."
He left.
Outside the estate walls, something moved through the shadows—low to the ground, eyes gleaming with unnatural clarity, its breath steady, patient.
It had learned.
And it was hungry.