The Three Envelopes Weighed Differently

The three envelopes weighed differently.

Jang Munsu weighed them again on the empty scale before setting them on the saddle. The heaviest envelope seemed to hold three sheets of paper, the lightest less than one. He did not break the seals. Written on the outside were only the words for confirming the three seals upon return, along with three different routes.

"We won't know until we measure."

The telegraph bureau messenger asked.

"Should I write down even the weight?"

"We need to know if it changed when it comes back."

Jang Munsu recorded the weight of each envelope, the thickness of the paper edges, and the direction of the crack in the sealing wax, each separately. He did not put what the contents might be into the estimate column. Writing visible traces and later interpretation on the same line would produce a conclusion before the envelope was even opened.

The truce hourglass was running at the same time inside the city gate and at the expeditionary force's camp. While the second water barrel of the shared water supply was being hoisted up, one soldier on the palace side wrapped cloth around his shoulder. Water and two more days had been secured, but that did not make the road north safe.

Yun Haejun arrived carrying a copy of the forged code wrapped in oil paper.

"Is this the original?" Jang Munsu asked.

"No. The original is held by the audit office."

"Who copied it?"

"Choi Ikdo made the first copy, and Oh Bokrye checked the character count against it. I marked the point where the priority code was changed."

"And the interpretation?"

"None."

Jang Munsu unwrapped it. On the left of the copy was the transmitted code, on the right only the position where it differed from the original. Words like "relief purpose," "military purpose," "foreign interference" appeared nowhere.

"This is a trace," he said. "Intent is still a guess."

Haejun nodded.

"That's why I changed the recipients."

Jang Munsu looked at the outside of the three envelopes. The name column was still blank.

"Who do we name?"

"Im Gwanpil, Baek Mujeong, Han Seorin."

"And you?"

"I'm excluded."

"You're also the person who knows the first forgery best."

"That's exactly why I shouldn't receive all three."

Haejun wrote three lines of reasoning. The audit office would confirm the change to the original text and its storage route, the workshop would measure the code and the parts, the trading house would confirm the traces of transport and payment. For any one person to gather all three envelopes, they would need the viewing time and consent of the other two.

Jang Munsu asked.

"What if the three of them reach different interpretations?"

"We don't force them to match. We look first at whether the measurements match."

"And the political conclusion?"

"That gets signed separately."

It was on the condition that Haejun reduce his own authority. Still, it was Haejun who had decided the recipients. Jang Munsu drew one more blank line.

"Right to replace a recipient."

"Why is that needed?"

"One of the three could be arrested, or could move before the envelope reaches them. If you decide again, the monopoly comes back to you."

"Who makes the change?"

"The remaining two recipients and one keeper of the transport route."

Haejun calculated for a moment.

"Agreed."

Jang Munsu wrote the recipient and replacement condition on each envelope. The first was Im Gwanpil, by the telegraph bureau messenger's route. The second was Baek Mujeong, carried on his own person. The third was Han Seorin, by the trading house's relay horse route. If he, a technician, carried the technical envelope himself, knowledge would concentrate on one route. He swapped the second and the first. He kept the audit envelope on his own person, and the telegraph bureau messenger took the workshop envelope.

"Why did you swap them?" the messenger asked.

"If I carry the technical envelope, I'll be suspected even without opening it."

"And the audit one is fine?"

"It's not fine. It's just a different kind of risk."

He noted the time and reason for the swap on the outside. He drew a line through the original route without erasing it, and wrote the new route beside it.

The order for the northern investigation read "confirm facts related to the line anomaly and the subsidy." Which line to examine first, which person in the Qing technical network to meet, what to report to the central authority, all of it was left blank.

Haejun asked.

"What will you confirm first in the north?"

"First, the relay resistance value. Second, which station kept a copy of the same code. Third, the seal paper and the time of transport."

"And the owner of the three seals?"

"That question comes after the measurement."

"The political conditions?"

"If I take any, I'll write them separately."

Jang Munsu had gotten his training and parts from the northern technical network. They might offer copper in exchange for demanding to see his report. If he hid the source and conditions of the parts, it would look like an independent investigation, but if he handed over everything, Joseon's field evidence would belong to a foreign technical network.

"What if they ask to see the original?" Haejun asked.

"I say there is none."

"The copy?"

"I show only the part needed for the measurement. Whatever measurement value they give in return, I take with their name attached."

"What if they demand the full copy as a condition for supplying parts?"

"It's unlikely I'll accept."

"Unlikely?"

"If the line is cut in the field and the operator is trapped, the judgment could change."

Jang Munsu wrote "I refuse" and then struck it through before the ink dried. He could not know whether he could keep to that after the line was cut and the operator trapped. Below it he wrote something new. If he accepted a condition, he would record on the same page who demanded it, what part he showed, and who he had drawn out in exchange.

Haejun held out one more sheet.

"This is the incomplete transmission log from the north gate."

"That's not in the investigation order."

"It shows the same copper overheating and relay delay."

"There's a possible connection. I can't say it's the same cause."

Jang Munsu placed it in the northern investigation bundle but marked the cover differently. "For comparison, not direct evidence." When a technician sees similar waveforms, it's easy to lump them into one cause. He decided to look for the differences first instead.

The last check before departure was the envelopes themselves. Jang Munsu attached a paper strip to the edge of the sealing wax and had each route receive a different mark. The telegraph bureau messenger drew two vertical lines, the trading house's relay horse route drew a half horseshoe. Jang Munsu drew a single horizontal line on his own envelope and added the weight and the direction of the crack in the wax. Given time and tools, one mark alone could be imitated, but the number of traces that would all have to be matched at once had grown.

Jang Munsu did not leave the three envelopes on one table for long. He handed each to its keeper in the order the records were finished. The messenger followed the northern telegraph relay stations, and the trading house's relay horse took the western commercial road toward the northern shop. Jang Munsu chose the riverside road, which did not overlap with the military road.

The telegraph relay stations were fast but checked permit tags, the commercial road was slow but left a receiving ledger at every shop. The riverside road had few intermediate records and few ferry crossings for flood season. Jang Munsu carved three conditions into a wooden tag, each with a different knife mark, ordering that delivery stop if he met a demand for sealing, a demand for collateral, or a mismatch in recipient. Without the two signatures for the right of replacement, he would not hand it even to a substitute. This was to make sure the rule could not be changed into a different order in the hands of a driver who could not read.

"The arrival times will all differ," Haejun said.

"That way if one route is blocked, they don't all vanish at once."

"When the first envelope arrives, do we wait for the rest?"

"We record the measurement only as provisional. We don't raise it to a shared fact until two routes agree."

Haejun glanced at the truce hourglass.

"We won't get an answer within forty eight hours."

"We can't reach a conclusion from whichever one sheet arrives fastest."

Jang Munsu made a not yet arrived column beside the provisional record column and drew a thick line under it. Even if two routes agreed, the fact that the remaining route had not arrived would not be erased.

Haejun was about to sign the three route receiving forms when he stopped.

"I'm not a recipient, but I am the one who approved the dispatch."

"That fact needs to be kept on record too."

"Doesn't that contradict saying I won't monopolize this?"

"Responsibility for dispatch and authority to receive are different things."

Haejun wrote his name in the dispatch approval column. Jang Munsu added beside it "no right to view contents." The fact that authority had been reduced, and by whom, was also kept on record.

The driver tightened the saddles on the three horses. On the third horse, which carried no envelope, were loaded Jang Munsu's toolbox, insulating cloth, and blank measurement sheets. The telegraph line might not know borders, but customs knew copper. At every checkpoint they would be asked about the source of the tools and taxes.

"Who pays the cost?" the trading house's relay horse rider asked.

Haejun checked the money pouch. What remained after the truce and the dispatches was little.

"Up to the first relay station, the telegraph bureau. The commercial road, Han Seorin's trading house pays in advance. The riverside road..."

"Comes out of my subsidy first," Jang Munsu said.

That subsidy itself could become a subject of investigation. He did not hide the source of the funds and wrote "temporary use pending verification of source." If it later turned out to be improper money, the travel cost would remain as a debt.

The three did not depart at the same time. The telegraph bureau messenger left through the east gate first, and after about the time it takes to eat a meal, the trading house's relay horse turned onto the western market road. Jang Munsu confirmed that the two routes had split before mounting his horse last.

At the shared water point, the third barrel was being hoisted up. The truce hourglass had run down by a little more than a meal's worth of time. The moment Jang Munsu turned his horse's head toward the northern road, a dull burst sounded from the direction of the docks, duller than gunfire.

He pulled the reins by reflex. The horse reared, and beyond his line of sight a thick rope snapped through the air like a snake.

The wooden axle of the hoisting pulley twisted, and the net of sacks hanging in the air tilted. Oh Bokrye shoved the person below her out of the way and grabbed the rope. The rough fiber tore her palm and her fingers caught in the gap of the pulley.

"Let go of the rope!" someone shouted.

By the time Oh Bokrye pulled her hand free, blood had run down to her wrist. The net of sacks fell to the ground but missed the people below. Jang Munsu saw the severed end. The outside looked bright like new rope, while only the inner part that had been wound around the axle was pressed dark. If he rode over now, he could check the injury and the axle. But then one of the three routes would be tied to his own hands again, right from the start.

She pressed her injured hand to her chest and rang the work stoppage bell three times with the other hand.

"Full stop! Don't turn a single pulley!"

Every rope on the dock came down to the ground. As the laborers took their hands off the pulleys, the sacks at the shared water point also stopped in midair.

Jang Munsu, his horse half turned, heard all three rings of the bell. Checking the severed axle was Yun Haejun's task, and checking the northern line was his own. The blood falling from Oh Bokrye's wrist could not be divided that way.

He took a blank measurement sheet from his toolbox and threw it to the telegraph bureau's assistant.

"Don't throw away the axle. Write down both ends of the severed rope and the time of the injury, separately. Don't write the cause yet."

Only after confirming the assistant had caught the paper did Jang Munsu let go of the reins. As his horse rounded the first bend of the northern road, the work stoppage bell was still ringing longer than the truce bell had.