Gu Yan didn't tell Wuchen what to steal until the last moment.
That was part of the leash. If Wuchen didn't know, he couldn't rehearse guilt into his face. He would look like what Gu Yan wanted him to look like: a runner obeying.
After dusk, Wei brought him a plain cloth bundle and one sentence.
"Wear this under your robe."
Inside the bundle was a darker inner shirt with a stitched pocket at the rib, meant to keep small objects from shifting when you ran. Practical. Quiet. The kind of clothing that admitted a plan without saying it.
Wuchen changed, stacked breath, pinned wrist points, held his two grains steady. Then he followed Wei to the north wall gate.
No one saluted Wei. They didn't need to. Wei's presence was its own pass.
At the gate, a guard stood beside the register board where exits were logged with brush and name. The guard's eyes slid over Wuchen's collar trim, then to Wei's face, then away.
Wei didn't speak. He simply stepped back and let Wuchen approach alone.
This was important. Alone meant the record, or lack of it, belonged to Wuchen.
Wuchen bowed and produced Jiang Ren's sealed patrol pass.
The guard's eyes narrowed at the Ridge Patrol notch wax. He broke the seal, glanced at the short authorization line, then looked past Wuchen into the dark as if checking whether anyone watched.
He didn't reach for the register brush.
He waved Wuchen through with a small jerk of his chin.
Unlogged.
Wuchen stepped out.
Cold mountain air hit him like a slap, clean compared to inner hall incense. He moved fast along the outer path that ran under the wall, keeping to shadow. He didn't head toward ruins. Not tonight.
Wei's earlier words had been clear: a clerk's shelf.
Gu Yan wanted a small missing thing from a place that made Han bite. That meant registry, library, apothecary, or Ridge Patrol records.
Gu Yan had said "clerk," not "deacon."
So not Han's desk. A clerk's storage.
A place where someone lower would take the blame first.
Wuchen circled to the side window of the registry store room, a narrow lattice opening used for airflow. He'd noticed it during latrine duty days, when outer tasks brought him near places he wasn't meant to study.
The latch was simple.
Too simple.
Gu Yan had already prepared this access, just as he prepared everything. Nothing in his traps relied on luck.
Wuchen slid the lattice open and slipped inside.
The store room smelled like paper, dust, and old ink. Shelves lined the walls with sealed bundles, blank forms, stamp pads, and ledger scraps. A single lantern burned low on a hook, flame tiny.
Wuchen kept his breath slow.
He wasn't here to destroy. Destruction made noise.
He was here to take one small thing that would be missed at the right time.
He moved to the shelf labeled "Entry Logs, Week Drafts," where thin bundles were tied with twine.
On the corner shelf sat a small wooden stamp case.
Wuchen opened it carefully.
Inside were hour block stamps like the one he'd used to stain Mu Tao's draft, each carved with a different segment mark. One stamp was missing a sliver of wood at the handle, a flaw that made its impressions slightly unique.
A fingerprint of a tool.
Perfect.
If that stamp went missing, a clerk would panic because unique tools could be traced. Han would smell sabotage. Ridge Patrol would smell trap. Everyone would start counting hands again.
Wuchen slid the flawed stamp into the stitched rib pocket under his robe.
He closed the case exactly as he found it, then stepped back.
As he did, a faint sound came from outside the store room door.
A soft scrape.
A key.
Wuchen froze.
Clerks didn't usually enter at night.
Not unless someone told them to.
Not unless a trap was already closing.
Wuchen's fingers tightened inside his sleeves.
He could hide behind the shelf.
He could slip out the window.
But either choice made a story.
If he slipped out, someone might see a shadow leaving and later say, "I saw a runner."
If he hid and got caught, the stamp in his pocket would make him a thief.
He chose the third thing Gu Yan always forced into his life.
Timing.
Wuchen moved to the window and slipped out just as the door opened.
Cold air swallowed him. He dropped into the brush outside and held still.
Inside, lantern light shifted.
He heard footsteps, slow, deliberate.
A man muttered, "Still burning…"
Not a clerk's voice.
Too calm.
Too deep.
Ridge Patrol?
Or Han's men?
Wuchen stayed motionless until the footsteps moved deeper into the room and the door clicked shut again, muffling sound.
Then he ran.
Not fast enough to pant.
Fast enough to be gone.
He returned to the north wall gate and held the unbroken half of the patrol pass wax in his sleeve as proof he'd used it. The guard was still there.
Wuchen didn't approach openly. He waited until a servant wagon creaked by and used the moment of distraction to slip back through the gate.
Again, the guard didn't log him.
Unlogged in.
Unlogged out.
Wuchen returned to Gu Yan's courtyard and knelt.
Gu Yan and Wei were waiting.
Gu Yan's eyes went straight to Wuchen's ribs. "Did you take it?" he asked softly.
Wuchen pulled the flawed hour stamp from his stitched pocket and offered it with both hands.
Wei took it, inspected the chipped handle, and nodded once.
Gu Yan smiled faintly. "Good," he murmured. "Now someone will miss it in the morning."
Wuchen's throat tightened. "Someone entered the store room as I left," he reported. "Not a clerk. Calm voice."
Gu Yan's eyes brightened. "Excellent," he said softly. "That means Jiang Ren is already trying to guard his own trap."
Wei's voice was low. "Or Han is."
Gu Yan nodded once. "Either way, someone is moving," he murmured.
He tapped the stamp lightly against the table like a metronome. "Tomorrow," he said gently, "you will return this."
Wuchen blinked. "Return it?"
Gu Yan smiled. "Of course," he said. "We don't want the stamp missing for long. We want it missing just long enough to make people show their hands."
He leaned forward, eyes bright. "And when you return it," he added, "you will do it through Jiang Ren."
Wuchen's stomach dropped.
Gu Yan's voice stayed soft. "He offered you unlogged night," he murmured. "So we let him believe his protection worked. Then we make him deliver the cure."
Wei said quietly, "And we see who he runs to when he realizes he's carrying both the sickness and the medicine."
Wuchen bowed, throat dry. "Understood."
He backed out of the pavilion, wrists aching, chest tight, and lay down on his mat without truly sleeping.
Unlogged night had been a door.
Now Gu Yan had pushed him through it holding a stamp like a stolen tooth.
Tomorrow, that tooth would be put back into someone else's mouth.
And the bite would come from whoever panicked first.