The first grain of qi didn't make Lin Wuchen strong.
It made him sensitive.
When he left the side room, the corridor felt louder. Not in sound, but in presence. Servants passing by carried faint heat in their bodies. Lantern flames felt sharper. Even the stone under his feet seemed to hold cold more clearly.
He kept his face dull anyway.
Sensitivity was a luxury you couldn't show.
Wei took him to a small inner service alcove behind Gu Yan's courtyard and pointed at a narrow sleeping mat and a low basin. "Here," Wei said. "You sleep. You wash. You wait."
Wuchen bowed. "Yes."
Wei paused a breath, then added flatly, "No wandering."
Wuchen nodded.
When Wei left, Wuchen sat on the mat and tried to breathe the way Gu Yan had ordered. Spine straight. Tongue up. Slow inhale. Slower exhale.
For a few breaths, the tiny weight in his lower abdomen stayed.
Then it wobbled.
A warmth slid upward, thin as smoke.
Wuchen's chest tightened.
He focused harder, imagining the cup, imagining the rim steady.
The warmth slipped anyway, like water finding a crack.
His palms grew faintly warm. His fingertips tingled. Then the sensation vanished.
The weight in his belly felt lighter.
Leaked.
Wuchen swallowed, throat dry.
So this was thin Origin.
Not that he couldn't gather.
That he couldn't keep.
He sat for a long time, breathing and chasing the feeling, trying to pull it back down.
Once, he felt a tiny pressure return.
Then it slipped again.
By midnight, he was sweating lightly despite the cold, jaw clenched, eyes stinging from not blinking.
He stopped.
Gu Yan had warned him: don't chase heat. Chase stillness.
Chasing made you leak faster.
Wuchen lay down on the mat, staring at the dark ceiling, and listened to his own breathing.
A runner's breathing.
A tool's breathing.
Now a cultivator's breathing, barely.
In the outer yard, survival meant keeping your body intact.
In the inner hall, survival meant keeping a secret coin inside you from spilling out through cracks you didn't even know you had.
Near dawn, Wei returned.
He didn't knock. He didn't need to. He stepped into the alcove and looked down at Wuchen.
"You didn't sleep," Wei said.
Wuchen sat up quickly and bowed. "This one tried to hold."
Wei's eyes narrowed slightly. "And?"
Wuchen swallowed. Honesty was dangerous, but Wei would see it anyway. "It leaks," he said quietly.
Wei stared at him for a moment, then nodded once, as if confirming what he already knew. "Thin cups leak," he said.
He tossed a small paper packet onto Wuchen's mat. "Bone-warming powder," he said. "Auntie He's. One pinch tonight. It helps your channels not seize when you hold."
Wuchen's throat tightened. "Why do you help?"
Wei's face stayed flat. "If you break, Gu Yan gets angry," he said.
That was the truth.
Wuchen bowed. "Yes."
Wei gestured toward the courtyard. "Senior Brother Gu wants you," he said. "He has another errand."
Wuchen stood, pulled his robe straight, and followed.
In Gu Yan's pavilion, Gu Yan was writing again.
He didn't look up when Wuchen entered. "Sit," he said, as if Wuchen had always belonged there.
Wuchen knelt.
Gu Yan's brush paused. "Did you hold the grain?" he asked.
Wuchen's throat tightened. "It leaked," he admitted.
Gu Yan chuckled softly. "Of course it did," he said. "If it didn't, Elder Qin would have given you a sect token instead of sand."
Wuchen stayed still.
Gu Yan set his brush down and looked at him, eyes bright. "Leaking isn't failure," he said gently. "Leaking is information."
He leaned forward. "It means you need a seal," he murmured.
Wuchen's stomach tightened. "A seal?"
Gu Yan nodded. "Not a talisman seal," he said. "A method. A habit. A way to close cracks."
He tapped the table once. "You'll learn it by doing," he said.
Gu Yan slid a small folded paper across the table. It wasn't sealed. It was too plain for inner hall messages.
"Take this," Gu Yan said. "To the inner library clerk. Exchange it for a breathing manual fragment. A cheap one. The kind outer disciples aren't allowed to touch."
Wuchen's throat went dry. "A manual?"
Gu Yan smiled. "A fragment," he corrected. "Enough to patch a cup."
Wuchen bowed. "Yes."
Gu Yan's voice lowered slightly. "And Wuchen," he added, "don't let anyone see the paper. If Deacon Han learns you're seeking methods, he'll decide you're worth stealing."
Wuchen bowed deeper. "Understood."
Gu Yan's smile widened. "Good," he said. "Now go leak somewhere useful."
Wuchen took the plain folded paper with both hands and left the pavilion.
The first grain of qi had leaked away.
But it had also changed the rules.
Now Gu Yan was feeding him methods.
Methods were more dangerous than sand.
Sand was fuel.
Methods were doors.
And doors, in a sect, were what people killed to keep closed.