The first warning came in the form of a broken seal.
Lin Han found it beneath the records office door shortly after sunrise.
It was a small piece of dark clay, no larger than the tip of his thumb. One side was smooth. The other carried the incomplete impression of an official seal.
There was nothing unusual about broken sealing clay.
Documents were opened every day. Old bindings were discarded. Fragments fell beneath tables and were swept into corners.
But this fragment had not been there the previous evening.
Lin Han knew because he had swept the passage himself.
He crouched and examined it without touching it.
The impression was incomplete, but part of a character remained visible.
It was not enough to identify the issuing office.
He looked toward the door.
The records room was supposed to remain locked overnight.
Han Rui held one key.
The chief clerk held another.
Lin Han had no reason to believe either man had entered after the evening watch.
He also had no reason to believe they had not.
He straightened.
Then he went to find Han Rui.
***
The clerk arrived carrying his writing case.
He listened to Lin Han's explanation, examined the fragment, and opened the records room.
Nothing appeared disturbed.
The document cases remained on their shelves.
The writing table was orderly.
The window shutters were secured.
Han Rui inspected the lock.
"No damage."
Lin Han stood beside the doorway.
"Could someone have opened it?"
"Someone with a key could."
"Did you enter last night?"
"No."
Han Rui looked toward the shelves.
"The chief clerk may have."
He bent to collect the fragment, then paused.
"Fetch a clean slip."
Lin Han obeyed.
Han Rui placed the clay on the slip and examined it beneath the morning light.
The surviving impression showed only part of a character and the edge of a border.
"Not enough to identify," he said.
"Should we report it?"
"We will ask who entered the room."
He looked at Lin Han.
"And until we know, you will say nothing about it."
"Yes, sir."
Han Rui placed the fragment inside a small container.
Then he began checking the document cases.
Lin Han watched him.
The clerk was not frightened.
But he was no longer behaving as though the fragment were ordinary rubbish.
***
By midday, they had an explanation.
Or something resembling one.
The chief clerk reported that he had entered the records room after sunset to retrieve a transport summary requested by the station commander.
He had opened one sealed case and returned it before the night watch.
Han Rui asked which case.
The chief clerk named it.
Han Rui checked the shelf.
The case was present.
Its binding had been replaced.
The explanation was plausible.
The matter should have ended there.
Instead, Han Rui discovered that the case contained one more document than its transfer list recorded.
It was a narrow bundle of writing slips tied with faded black cord.
The bundle had no exterior title.
Its position suggested that it had been inserted among the transport summaries rather than filed with them.
Han Rui stared at it for a long moment.
Then he closed the case.
"Lin Han."
"Sir?"
"Go to the loading yard."
Lin Han hesitated.
"Is something wrong?"
"That is not your concern."
The clerk's voice was sharper than usual.
Lin Han bowed.
"Yes, sir."
He left without another question.
But he remembered the black cord.
And the expression on Han Rui's face.
***
The trouble began before the evening meal.
A soldier entered the loading yard and ordered Lin Han to report to the administrative office.
Tian Bo was inspecting a cart nearby.
"Who summoned him?"
"Clerk Han."
The sergeant looked toward Lin Han.
"Go."
Lin Han bowed and followed the soldier.
Inside the records office, Han Rui stood beside a table.
Commander Meng Zhen was present.
So was Zhao Wen, the chief clerk whose earlier accounts had caused difficulty during the station's grain inspection.
The narrow bundle lay on the table.
Its black cord had been removed.
Meng Zhen looked at Lin Han.
"You were the first to notice the broken seal?"
"Yes, Commander."
"Did you enter this room during the night?"
"No."
"Did you handle any of the document cases?"
"No."
"Did you know this bundle was inside the case?"
"No, Commander."
Meng Zhen studied him.
"Have you seen it before?"
Lin Han examined the slips from where he stood.
"No."
Zhao Wen folded his arms.
"Then why is the laborer here?"
Han Rui answered.
"Because he reported the fragment that prompted the inspection."
"That hardly makes him a witness to the documents."
"No," Meng Zhen said. "It makes him a witness to the condition of the room before the case was opened."
Zhao Wen lowered his head.
"Of course, Commander."
Meng Zhen turned back to Lin Han.
"Describe exactly what you found."
Lin Han did.
He described the location.
The appearance of the clay.
The condition of the door.
He did not claim that anyone had entered unlawfully.
He did not claim the seal belonged to the newly discovered bundle.
When he finished, Meng Zhen nodded.
"That is sufficient."
Lin Han bowed.
He expected to be dismissed.
Instead, the commander asked another question.
"Do you recognize any of these place names?"
Han Rui looked up sharply.
"Commander—"
"Only the names."
Meng Zhen turned one slip so that Lin Han could see it.
Several entries had been written in a cramped hand.
The first named a supply station west of the river.
The second named a roadside depot.
The third—
Lin Han stopped breathing for a moment.
East Ridge.
He forced himself to remain still.
"Yes, Commander."
"Which?"
"East Ridge."
"Have you worked there?"
"No."
"Then why do you recognize it?"
"Because I encountered the name in transport records at Heiyang."
Meng Zhen's expression remained unchanged.
"What records?"
Lin Han hesitated.
The room seemed suddenly smaller.
He thought of Wei Rong.
Of Chen Yu.
Of Qiao Ren.
And of Xun's warning.
A statement was not proof merely because a man remembered it.
"A tally that I saw," Lin Han answered carefully. "It referred to a delivery of six hundred shi."
Han Rui looked toward him.
Zhao Wen's eyes narrowed.
Meng Zhen asked, "And?"
"A later summary referred to nine hundred shi going to the same destination."
Silence followed.
The commander looked toward the bundle.
Then he closed it.
"That will be all."
Lin Han bowed and withdrew.
He did not know whether he had helped himself.
Or placed his neck beneath another man's blade.
***
Tian Bo found him outside the barracks.
"What happened?"
Lin Han glanced toward the administrative building.
"They asked about the broken seal."
"Anything else?"
"Commander Meng showed me a document."
Tian Bo waited.
"It contained the name East Ridge."
The sergeant's expression changed.
"Did you speak about Heiyang?"
"Only what I had seen."
"Lin Han."
"I did not accuse anyone."
Tian Bo looked at him for a long moment.
Then he sighed.
"That is better than before."
Lin Han lowered his eyes.
"But?"
"But now they know you remember the figures."
"I already told the commander I came from Heiyang."
"Knowing where you came from is not the same as knowing what you saw."
The sergeant looked toward the records office.
"Do not discuss this with the other laborers."
"I won't."
"And if anyone asks about the bundle, send them to Han Rui."
"Yes."
Tian Bo turned away.
Then he stopped.
"One more thing."
Lin Han looked up.
"Do not assume the bundle was hidden because it contains a crime."
Lin Han thought of the black cord.
"Then why was it there?"
"That is what the commander must determine."
***
The bundle had once belonged to a different office.
Han Rui discovered that the following morning.
Its slips were older than the surrounding transport summaries. Their edges had darkened, and several bore small holes where a previous binding had passed through them.
The entries were arranged in columns.
Not by destination.
Not by date.
Not by issuing station.
But by reference marks.
The marks were short combinations of characters and numbers.
Some appeared beside grain movements.
Others beside timber, animals, or equipment.
At first, Han Rui believed the bundle was an old index.
Then he noticed that several entries referred to transactions already marked complete in the station's ordinary records.
Beside those transactions, a second destination had been written.
In some cases, the second destination was followed by a different quantity.
The bundle did not explain the differences.
It simply preserved them.
Han Rui reported this to Meng Zhen.
The commander ordered the slips secured and asked whether anyone could identify their original filing system.
Han Rui knew one man who might.
Xun.
But the old archivist had already departed.
Sending for him would take time.
And Meng Zhen had other concerns.
The regional supply administration had requested an explanation for the lost Shiqiao convoy.
The fourth cart remained missing.
The grain seized by the unidentified travelers had not been recovered.
And the station's emergency reserve was becoming dangerously small.
Meng Zhen could not devote every officer to an unexplained bundle.
So he gave Han Rui a narrower instruction.
"Determine whether these entries refer to real movements."
"Yes, Commander."
"Do not alter the original slips."
"Understood."
"Do not circulate copies."
"Yes."
"And do not begin an accusation based upon an unidentified index."
Han Rui bowed.
"I understand."
***
Lin Han learned the name by accident.
It happened during the afternoon count.
A young clerk entered the loading yard carrying an empty document case.
He complained to another scribe that Han Rui had spent the entire morning examining the black-bound register.
"The black register?" the other asked.
"Whatever it is."
The first clerk shrugged.
"Old slips tied with black cord. No proper title. No one knows where they came from."
Lin Han continued counting sacks.
He did not look toward them.
But the phrase remained in his mind.
The Black Register.
It sounded important.
Perhaps too important.
Xun would have warned him not to mistake a convenient name for an explanation.
Still, names had power.
A bundle of unidentified slips could be dismissed as a filing error.
A Black Register sounded like something someone had intended to conceal.
Lin Han disliked how quickly the second description changed his expectations.
***
That evening, the station received an unexpected visitor.
A commercial transport agent arrived with two carts and a request for replacement animals.
His papers identified him as an intermediary serving several merchant households.
He claimed that one of his animals had collapsed near the southern road and that his employer would pay the station for temporary assistance.
The request was ordinary enough.
Private carriers sometimes sought help from military stations when roads became impassable.
But the station's animals were already heavily committed.
Tian Bo refused the request.
The agent argued.
He said the goods were urgently needed.
He said his employer had connections with regional officials.
He said the station would regret delaying the shipment.
Tian Bo remained unmoved.
"Then ask your employer to send another animal."
The agent's face reddened.
"You do not understand who I represent."
"Then explain it to the station commander."
"I may do that."
"Good."
The sergeant turned away.
Lin Han had watched the exchange from beside the loading platform.
He thought little of it until the agent began speaking with one of the drivers.
The man mentioned the southern road.
Then an intermediate holding place.
Then a name.
Luo Jian.
Lin Han's hand stopped moving.
He looked up.
The agent had his back turned.
The driver nodded.
"Master Luo's carts?"
"Yes."
"Then why come here?"
"Because the assigned animals have not arrived."
The conversation continued.
Lin Han heard no more.
A soldier called him to the grain storehouse.
He obeyed.
But his thoughts remained in the yard.
Luo Jian.
The commercial intermediary Mei Ling had mentioned.
A man connected to private transport along the southern route.
A name that had appeared near the edges of the Heiyang mystery.
And now his carts were requesting assistance at the same military station where an unexplained register had been found.
Lin Han felt the familiar temptation.
To connect everything.
To turn coincidence into design.
He stopped himself.
The agent had not been identified as Luo Jian's employee by any verified document.
The southern road served many merchants.
The Black Register might have nothing to do with Heiyang.
He knew all this.
Yet he also knew that if he ignored the conversation, the opportunity to learn more might disappear.
***
He waited until Tian Bo had finished his inspection.
"Sergeant."
"What now?"
"The commercial agent."
"What about him?"
"He mentioned Luo Jian."
Tian Bo looked up.
"Are you certain?"
"I heard the name."
"Did he say he worked for him?"
"He referred to Master Luo's carts."
"That is not the same thing."
"I know."
Tian Bo studied him.
"Why does the name matter?"
Lin Han hesitated.
"Mei Ling mentioned him at Heiyang."
The sergeant's expression hardened.
"Lin Han."
"I am not accusing him."
"Then what are you doing?"
"Reporting what I heard."
Tian Bo was silent.
The answer was reasonable.
But it was also incomplete.
Lin Han knew why he had reported the name.
He hoped it mattered.
He hoped the scattered pieces were beginning to form a pattern.
Tian Bo sighed.
"Very well. I will ask the agent to identify his employer properly."
Lin Han bowed.
"Thank you, Sergeant."
"Do not thank me. If his papers are in order, that will be the end of it."
"Yes."
***
The agent's papers were not entirely in order.
They identified the merchant household responsible for the shipment.
They named the route.
They listed the goods.
But the authorization for the replacement animals had been issued by a different intermediary.
The name was not Luo Jian.
It was Shen Fu.
Tian Bo examined the documents.
"Who is Shen Fu?"
The agent hesitated.
"A transport broker."
"Where does he operate?"
"Along the southern road."
"Does he work for Luo Jian?"
The agent looked surprised.
"Sometimes."
"Explain."
"Master Luo arranges some shipments. Shen Fu provides carts and drivers for others."
"Who authorized this journey?"
"Shen Fu."
"Then why did you mention Luo Jian?"
The agent hesitated.
"Because the carts were originally assigned through his network."
Tian Bo studied him.
"That does not establish your right to military animals."
The agent lowered his head.
"I understand."
The request was denied.
The man departed before sunset.
No arrest was made.
No goods were seized.
No accusation was recorded.
But Tian Bo sent a short notice to Han Rui.
It contained the names Shen Fu and Luo Jian.
And the route the agent claimed to be using.
***
The following morning, Han Rui summoned Lin Han.
The clerk looked tired.
Several document cases lay open on his table.
"Close the door."
Lin Han obeyed.
Han Rui examined him.
"Sergeant Tian says you reported a commercial agent."
"Yes, sir."
"Why?"
"Because I recognized the name Luo Jian."
"From Heiyang?"
"Yes."
Han Rui leaned back.
"Do you know him?"
"No."
"Have you seen his records?"
"Only fragments of commercial accounts shown to me by another person."
"Who?"
Lin Han hesitated.
"Mei Ling."
Han Rui frowned.
"The woman from Chu?"
"Yes."
The clerk was silent for a moment.
Then he asked, "Did those accounts identify Shen Fu?"
"No."
"Did they identify this station?"
"No."
"Did they prove that Luo Jian handled the missing three hundred shi?"
"No."
Han Rui nodded.
"Then we have no established connection."
"Yes, sir."
The clerk examined him.
"You are learning to answer more carefully."
Lin Han lowered his eyes.
"I am trying."
Han Rui looked toward the open cases.
"Good. Because careless answers may soon become expensive."
Lin Han felt his stomach tighten.
"Sir?"
The clerk took a slip from the table.
It contained several short entries.
One referred to a grain movement.
Another named a roadside holding place.
A third carried the same reference mark.
Han Rui placed the slip beside a transport summary.
"Look at the marks."
Lin Han leaned forward.
The reference marks matched.
Not the quantities.
Not the dates.
The marks.
He looked up.
"What does that mean?"
"I do not know."
Han Rui's voice was quiet.
"But the same marks appear in records prepared by different offices."
Lin Han stared at the slips.
"Could they refer to the same shipment?"
"Possibly."
"Then why are the destinations different?"
"That is what I intend to establish."
The clerk gathered the documents.
"You will not copy these."
"Yes, sir."
"You will not speak of them."
"Yes."
"And you will not approach the commercial agent."
"I understand."
Han Rui studied him.
"Do you?"
Lin Han looked toward the slips.
For a moment, he thought of Xun.
The old archivist had said that a man should search for records created outside the control of whoever might have altered the official account.
Now Han Rui had found matching reference marks in different sets of records.
It was not proof of a crime.
But it was a reason to continue.
"Yes, sir," Lin Han answered.
***
The danger came that night.
Lin Han was returning from the water jars when he heard a noise near the records office.
A dull impact.
Then hurried footsteps.
He stopped beneath the covered passage.
The courtyard was dim.
Only two lamps burned near the administrative building.
A figure moved between the shadows.
Lin Han could not see the person's face.
The figure carried something beneath one arm.
Then a second man emerged from the records office.
He spoke sharply.
"Stop."
The first figure ran.
The second pursued him.
Lin Han stepped backward.
A moment later, the fleeing man collided with a stack of empty baskets.
Wood scattered across the stones.
A guard shouted.
The figure turned toward the outer passage.
Lin Han saw a short blade in his hand.
He froze.
The man looked at him.
For one terrible moment, neither moved.
Then the man lunged.
Lin Han threw the water jar.
It struck the man's shoulder.
Water splashed across the stones.
The blade flashed.
Pain tore through Lin Han's forearm.
He stumbled backward.
The man pushed past him and ran toward the eastern gate.
Guards shouted.
Footsteps thundered through the courtyard.
Lin Han fell to one knee.
Blood ran down his hand.
He stared at it.
The cut was not deep enough to sever the muscles.
But it burned fiercely.
He pressed his sleeve against the wound.
The second man reached him.
It was Han Rui.
"Lin Han!"
The clerk knelt beside him.
"Where did he go?"
"East gate."
Han Rui shouted for the guards.
Then he looked at Lin Han's arm.
"Can you stand?"
"I think so."
"Do not move."
The clerk called for the medical attendant.
Lin Han looked toward the records office.
The door stood open.
One of the shelves had been disturbed.
A document case lay on the floor.
Its binding had been cut.
***
The intruder escaped.
The eastern gate guards reported seeing a man climb the outer drainage wall before disappearing into the darkness.
A search was ordered.
No one was found before dawn.
Lin Han's wound was cleaned and bound.
He Ning said the cut was painful but not immediately dangerous.
The laborer was ordered to rest.
He did not sleep.
Near sunrise, Tian Bo came to see him.
The sergeant stood beside his sleeping place.
"How is the arm?"
"It hurts."
"Good."
Lin Han looked up.
Tian Bo's expression remained stern.
"Pain means you will remember not to stand in front of a man carrying a blade."
"I did not intend to."
"Few men do."
The sergeant sat beside him.
"Tell me what happened."
Lin Han described the footsteps.
The figure.
The blade.
The water jar.
He did not claim to recognize the intruder.
He had seen no face clearly enough.
Tian Bo listened.
Then he nodded.
"That agrees with the guards' account."
Lin Han hesitated.
"Was anything stolen?"
The sergeant's expression changed.
"Some documents are missing."
Lin Han felt cold.
"The black-bound bundle?"
"Part of it."
He stared at Tian Bo.
The sergeant continued.
"Han Rui discovered that several slips had been removed. Others remain."
"Do we know which?"
"Not yet."
Lin Han lowered his eyes.
The intruder had not come for grain.
Or animals.
Or weapons.
He had come for records.
***
Meng Zhen ordered the station secured.
The records room was placed under guard.
All access was recorded.
Han Rui was instructed to prepare an inventory of the remaining slips.
The chief clerk was questioned.
So were the night guards.
The investigation established several facts.
The records room had been entered without authorization.
A document case had been opened.
Several slips from the black-bound bundle were missing.
An unidentified man had fled with a blade.
Lin Han had been wounded while attempting to stop him.
But the investigation did not establish who had sent the intruder.
Nor did it prove that the theft was connected to Heiyang.
Meng Zhen refused to make either claim.
Still, the commander understood what the attack meant.
Someone had been willing to risk entering a military station to remove a handful of old records.
That made the bundle important.
Not necessarily because every entry was true.
But because someone feared what those entries might reveal.
***
Two days later, Han Rui visited Lin Han in the infirmary.
The clerk carried no documents.
He sat beside the injured laborer.
"How is your arm?"
"Better."
"Can you write?"
"Slowly."
"Good."
Han Rui looked toward the courtyard.
For a while, neither spoke.
Then the clerk said, "The missing slips were not taken at random."
Lin Han looked up.
"Sir?"
"Most of the bundle remains. The intruder removed several entries from a particular group."
"Which group?"
Han Rui hesitated.
"Movements involving intermediate holding places."
Lin Han felt his pulse quicken.
"South of the usual routes?"
"Some."
"East Ridge?"
The clerk studied him.
"One of the remaining entries refers to East Ridge."
Lin Han lowered his eyes.
He wanted to ask more.
He wanted to know whether the missing slips concerned three hundred shi.
Whether Luo Jian's name appeared.
Whether Shen Fu was connected.
But he remembered Xun's warning.
Do not mistake a contradiction for understanding its cause.
He forced himself to ask a narrower question.
"Do we know who created the bundle?"
Han Rui shook his head.
"No."
"Then how do we know the entries are reliable?"
The clerk looked at him.
For the first time, he smiled faintly.
"That is the correct question."
***
When Han Rui departed, Lin Han remained beside the infirmary window.
His arm throbbed beneath the bandage.
He watched soldiers moving through the courtyard.
The station looked ordinary.
Carts were being repaired.
Grain was being counted.
Messengers came and went.
But something had changed.
The records office was guarded.
The clerks spoke quietly.
And Commander Meng had ordered an inquiry into documents that had previously been treated as forgotten administrative material.
Lin Han thought of the Black Register.
The name was not official.
It had begun as a careless description of old slips tied with dark cord.
Yet it had become something else.
A collection of movements that did not fit neatly into the empire's ordinary accounts.
A record of destinations that differed.
Quantities that shifted.
Transactions that appeared complete in one office and uncertain in another.
It might be evidence of fraud.
It might be a private reconciliation list.
It might be an unfinished administrative review.
He did not know.
But someone had tried to remove part of it.
And someone had carried a blade into the station to do so.
Lin Han looked at the bloodstained edge of his sleeve.
He had wanted the truth to become dangerous enough that powerful men would take it seriously.
Now it had.
And he was beginning to understand that danger did not distinguish between the guilty and the curious.
***
That evening, Tian Bo returned with a message.
"Commander Meng wishes to see you tomorrow."
Lin Han looked up.
"Why?"
"The records."
"Am I accused of something?"
"Not at present."
The answer did not comfort him.
Tian Bo studied him.
"Listen carefully. The commander has requested information from Heiyang."
Lin Han felt his stomach tighten.
"About the grain?"
"About several transport summaries."
"Will they question Qiao Ren?"
"I don't know."
"Chen Yu?"
"I don't know."
Lin Han lowered his eyes.
Tian Bo continued.
"The inquiry may reach people you once knew."
Lin Han thought of Wei Lan.
Of the slip she had hidden.
Of Chen Yu, still trapped in the administrative machinery of Heiyang.
He had hoped that leaving the compound would place distance between himself and the danger.
Instead, the road had brought the danger back.
The sergeant rose.
"Rest your arm."
"Yes."
"And Lin Han?"
He looked up.
"If the commander asks what you know, tell him exactly what you know."
Lin Han nodded.
"Nothing more?"
"Nothing less."
***
Long after Tian Bo departed, Lin Han remained awake.
The infirmary was quiet.
Beyond the window, the station's lamps burned against the darkness.
He thought of the three hundred shi.
Of the fourth cart that had never been recovered.
Of the commercial agents who used the southern road.
Of the black-bound slips.
The connections were tempting.
But temptation was not evidence.
He could not yet prove that the missing grain at Heiyang and the stolen records belonged to the same scheme.
He could not prove that Luo Jian had ordered anything.
He could not prove that the intruder had been sent by a regional official.
What he could prove was smaller.
A bundle of unexplained transport entries had been found.
Some of its reference marks corresponded to records kept elsewhere.
Someone had entered the station and removed selected slips.
And a man had wounded him while escaping.
Those facts were enough to demand an investigation.
They were not enough to complete one.
Lin Han closed his eyes.
For the first time since leaving Heiyang, he did not dream of freedom.
He dreamed of a room filled with records.
Every shelf was orderly.
Every bundle was labeled.
Every seal was intact.
Yet whenever he opened a case, the slips inside described a different destination.
He searched for the original instruction.
There was none.
He searched for the receiving acknowledgment.
It had been replaced.
He searched for the name of the man responsible.
The name changed each time he read it.
Then, from somewhere beyond the shelves, he heard Wei Rong's voice.
"Count again."
Lin Han woke before dawn.
His injured arm burned.
The station bell sounded.
Another day had begun.
And somewhere inside the guarded records office, the surviving slips waited to be read.
The Black Register had not given Lin Han an answer.
It had given him something more dangerous.
A reason for powerful men to believe that he might eventually find one.