6. The Forged Tallies

The old charcoal road was not a road at all. It was a scar left by a thousand woodcutters' carts, a rutted track that wound through the foothills like a frayed thread across a gray blanket. In summer it would have been choked with dust and the smell of ox dung. In winter it was a frozen canal, its ruts filled with ice that cracked under the horses' hooves like thin pottery.

They had found three horses in Suwen's supply cache, just as she had promised. The horses were Tuyuhun ponies, short-legged and shaggy-coated, the kind that could survive on frozen grass and snowmelt. Beside the horses were saddlebags packed with millet cakes, dried mutton, and two waterskins of barley wine. Suwen had prepared for a long journey. She had prepared for her brother.

Liu Gui rode at the head of the column, his eyes on the eastern horizon. The moon had set, and the stars were fading one by one as the sky lightened from black to charcoal to the pale gray of a winter dawn. Behind him, Li Yuanqing rode in silence, his tool roll slung across his back like a quiver. Zhang Anu brought up the rear, his sword across his saddle, his face set in the expression of a man who was already calculating how far they could ride before the army caught up with them.

They had been riding for three hours. No one had spoken for the last two.

The cold was brutal. It seeped through their woolen tunics and leather boots, numbing their fingers and toes until the reins felt like foreign objects attached to someone else's hands. Liu's breath crystallized in the air before him, a small ghost that dissipated as quickly as it appeared. He thought about the relay station. He thought about the brazier, still warm when they had left it. He thought about the courier's body, frozen in the cold store, and the two copper coins on his eyes.

The sun rose. It was a pale, watery sun, the kind that gave light but no warmth, and it revealed a landscape of brutal simplicity. To the north, the Qilian Mountains rose like a wall of white teeth. To the south, the Yellow River was a distant ribbon of gray ice. Ahead, the charcoal road wound eastward through a series of low hills, each one crowned with a signal tower that had not been manned since the Anxi Protectorate had collapsed a generation ago.

"We need to decide," Zhang said finally, his voice startling in the silence. "What we're actually going to do when we reach Chang'an."

"We need information first," Liu said. "We know almost nothing. Someone in the Secretariat sent that courier. Someone wrote our names on a piece of invisible paper. Someone wanted us dead before we ever touched the map. Why?"

"Because we were convenient," Li said. "Three soldiers on rotation. Easy to predict our route. Easy to arrange an accident. No families to ask questions. No commanders to demand investigations."

"That explains why we were chosen. It doesn't explain why anyone wanted us dead in the first place."

Li was silent for a moment. Then he said, "The message in the bronze tube. It said we were the delivery mechanism. We were supposed to deliver something to someone. What were we delivering?"

"The transfer gear," Liu said. "The final component for the failsafe mechanism. Suwen's brother was supposed to install it. When he died, we carried it into the mountain instead."

"So our deaths weren't the point. Our deaths were a side effect. Someone wanted the transfer gear delivered to the mountain, and they wanted the deliverymen to die afterward so no one could trace it back to them."

"Which means someone in the Secretariat knew about the assassination," Liu said. "Knew about Suwen. Knew about the mechanism. And wanted it to succeed."

"Or wanted it to fail," Zhang said. "If they wanted it to succeed, why write our names on a death warrant? Why not just pay us to deliver the gear and keep quiet?"

"Because dead men tell no tales," Liu said quietly. "And this is the kind of tale that could topple a dynasty. If the Empress learned that someone in her own Secretariat had conspired to assassinate her, the executions would make the old purges look like a spring festival."

They rode on. The sun climbed higher, but the temperature did not rise. The horses' breath steamed in the cold air, and their hooves crunched through the frozen crust of the snow.

Around midday, they reached a crossroads. A stone marker stood at the intersection, its inscription worn by wind and weather but still legible. East to Lanzhou, forty li. South to the Yellow River ferry, fifteen li. West to the charcoal camps, ten li. North to the garrison road, thirty li.

"We should avoid the garrison road," Liu said. "The army patrols it twice a day. If anyone's looking for three missing soldiers, that's where they'll be watching."

"Lanzhou is a prefectural seat," Zhang said. "They'll have a garrison. They'll have a magistrate. They'll have inspectors who can recognize a deserter from forty paces."

"Then we take the ferry. Cross the river and approach Chang'an from the south. The southern road passes through smaller towns. Less military presence. Less chance of being recognized."

Li nodded. "And if we can find a courier station along the way, we might be able to send a message ahead. Feel out who in the Secretariat is watching for us."

Zhang laughed—a short, humorless sound. "Feel out? We don't even know who we're looking for. We have no names. No faces. No evidence except a bronze tube and a jade seed and a story that no one will believe."

"We have one more thing," Liu said. He reached into his tunic and withdrew the sheepskin map. The invisible script had faded almost completely, but the map itself remained—the mountain, the rivers, the ox-shaped ridge. "The map was stamped with a seal. The galloping horse of the Liangzhou garrison commandery. But the map didn't come from the garrison. It came from the Secretariat. Someone in the Secretariat had access to a Liangzhou garrison seal. That's a crime in itself. Unauthorized use of a military seal carries a death penalty."

"Then whoever used it is already a dead man. He just doesn't know it yet."

"Or she," Liu said. "The Empress employs women in the Secretariat. More than any emperor before her. If we're looking for someone with access to military seals and invisible ink and the Directorate for Armaments' secrets, we might be looking for a woman."

They turned south toward the ferry. The road was narrower here, less traveled, and the snow was deeper. The horses struggled, and after an hour they dismounted and led them by the reins. Li walked ahead, using a fallen branch as a walking stick to test the snow depth before each step.

The Yellow River appeared suddenly through a gap in the hills—a broad expanse of gray ice, cracked and ridged where the current had frozen in mid-flow. The ferry was a single flat-bottomed barge, drawn up on the near bank and chained to a massive iron ring set into the rock. A thin coil of smoke rose from a stone hut beside the landing, and as they approached, a man emerged, wrapped in so many layers of sheepskin that he looked more like a pile of laundry than a human being.

"Ferry's not running," the ferryman said. "River's frozen. Wait until spring."

"We can cross on the ice," Liu said.

"You can cross on the ice if you want to die. The current's still moving underneath. Ice is thin in the center. A horse's weight will crack it. A man's weight might. Your choice."

"Is there another crossing?"

"Thirty li upstream, there's a bridge. Built by the Sui emperors. Still standing. But the garrison controls it. You'll need travel permits to cross."

Liu exchanged a glance with Zhang. Travel permits were issued by the local prefectural office. Applying for permits would mean presenting their military tallies—the same tallies that would identify them as soldiers overdue for rotation.

"We'll take our chances with the ice," Liu said.

The ferryman shrugged. "Your funeral. Pay the crossing fee anyway. Two coppers per head, horse included."

"There's no crossing fee if the ferry isn't running."

"Maintenance fee, then. Someone has to keep the hut standing. Someone has to watch the river. Someone has to pull your bodies out when the ice cracks."

Liu paid the man six coppers from the small pouch Suwen had left in the supply cache. The ferryman pocketed them and retreated to his hut without another word.

They led the horses onto the ice. The surface was slick and uneven, ridged with pressure cracks and dotted with patches of snow that had been sculpted by the wind into fantastical shapes. Liu went first, testing each step with his sword scabbard before committing his weight. The ice groaned beneath him, a deep, resonant sound that seemed to come from the river's throat.

"The ferryman wasn't wrong," Li said. "The ice is thin in the center. I can hear the water moving underneath."

"How far to the far bank?" Zhang asked.

"Two hundred paces. Maybe two hundred and fifty."

"Long way to fall."

They moved slowly, spreading their weight as much as possible. The horses were nervous, their ears flat and their eyes wide, but they followed the men with the docility of animals that had learned to trust their handlers. Liu kept his eyes on the far bank, a low line of gray-brown hills that grew slowly larger with each step.

Halfway across, the ice cracked.

It was not a catastrophic break—not the sudden plunge into freezing water that Liu had been bracing for. It was a hairline fracture that spread from beneath his boot like a spider's web, branching outward in all directions. Water welled up through the crack, dark and cold, and the ice sagged perceptibly beneath his weight.

"Back up," he said. "Slowly."

They retreated, one step at a time, until the crack stopped spreading. Liu stood at the edge of the web, breathing hard, watching the water seep through the fractured ice. The river beneath was moving—he could see it now, a dark current that swirled and eddied beneath the translucent surface.

"We can't cross here," Li said. "The ice won't hold."

"Then we go back to the ferry and find another way."

"There is no other way. The ferryman said the bridge requires permits."

"Then we go upstream. Find a narrower crossing."

"And if there isn't one?"

Before Liu could answer, a voice called out from the far bank. It was a woman's voice, clear and carrying across the ice, and it was speaking in the Xianbei dialect that Li had been deciphering in the cave.

Li's head snapped up. "She said 'the crossing is safe twenty paces to the left. The ice is thicker there. Follow the line of the old bridge.'"

"What old bridge?"

Li pointed. Beneath the ice, barely visible in the gray light, were the remains of stone pilings—the foundations of a bridge that had collapsed long before the Sui engineers had built their garrison crossing. The pilings had slowed the current, and the ice above them was thicker, reinforced by the stone beneath.

They followed the line of the old pilings, and the ice held. At the far bank, a woman was waiting. She was old—seventy at least—with a face like a crumpled map and hands gnarled by a lifetime of labor. She wore the traditional clothing of the Tuyuhun herders, a long woolen coat dyed with indigo and edged with faded embroidery. A herd of shaggy goats milled around her, their bells clanking softly in the cold air.

"You came from the mountain," she said in heavily accented Chinese. "The mountain that smoked last night."

Liu tensed. "What do you know about the mountain?"

"I know it was sacred. I know the old Wei monks sealed it. I know someone has been living inside it, lighting lamps, burning charcoal. My goats could smell the smoke. They wouldn't graze on the eastern slope." She studied him with eyes that were the color of old tea. "And I know you are soldiers who should be somewhere else."

"We're not—"

"You are soldiers. The way you stand gives it away. Soldiers and craftsmen." She nodded toward Li. "The young one has the hands. The older one has the shoulders. And you," she looked at Liu, "you have the eyes of a man who has been making decisions for other people for a very long time."

Liu said nothing. The old woman's gaze was disconcerting, as though she could see through his skin to the bones beneath.

"The mountain smoked," she said again. "That means the clockwork finally stopped. I've been waiting for it to stop since I was a girl. My grandmother told me about it. The Ox that eats gold. She said one day the Ox would finish its meal and belch smoke, and then the spirits of the old Wei would finally rest."

"The old Wei?"

"The monks who built the shrine. They weren't just monks. They were engineers. Clockmakers. The last of the Northern Wei workshops, fleeing the Emperor's purge. They hid their treasure in the mountain and built the Ox to guard it. My grandmother was one of them. The last survivor. She escaped because she was nine years old and small enough to crawl through a ventilation shaft."

Liu felt the cold tighten around him. "Your grandmother knew about the mechanism?"

"She helped build it. She was the oiler. Her job was to climb through the maintenance tunnels and grease the gears. She did it from the age of seven to the age of nine, when the Emperor's soldiers came and the adults sealed the entrance and she escaped through a shaft too small for anyone else to follow."

"And she told you this?"

"She told me everything. She lived to be eighty-seven. She talked about the Ox every day of her last year. She said there was something in the mountain that no one had ever found. Not the gold. Something older. Something the monks had sealed in the third stomach."

"The third stomach was the gunpowder chamber."

"The third stomach was below the gunpowder chamber." The old woman's eyes were sharp, sharper than her age should have allowed. "My grandmother said the Ox had three stomachs, but the third stomach had a fourth. A hidden compartment. She said it was where the monks kept the thing that was worth more than gold."

"What thing?"

"I don't know. She never saw it. Only the abbot and the chief engineer had access. But she said it was what the monks had fled the capital to protect. Something older than the Wei. Something older than the Han. Something that had come from the Western Regions on the back of a Sasanian prince."

Li stepped forward. His face had gone pale. "A Sasanian prince? The one who brought the tribute gold?"

"The same. The gold was a decoy. The prince was carrying something else. Something the Persian king had sent to the Tang court as a gesture of eternal alliance. When the prince was killed—" She paused. "You don't know about the prince?"

"We know the official record says bandits took the caravan."

"The official record is a lie. The prince was killed by imperial agents. The Emperor wanted the object he was carrying, but he didn't want to pay the political price for taking it. So he had the caravan ambushed, and the prince was killed, and the object was stolen, and the gold was hidden in the mountain by the very agents who had committed the murder."

"Then the monks?"

"The monks were the agents. They had been ordered to hide the gold and return the object to the capital. But when they saw what the object was, they refused. They sealed themselves in the mountain rather than deliver it to the Emperor."

"What was it?"

"I told you. I don't know. But if the mountain has collapsed, it's still there. Buried under ten thousand tons of rock. Waiting for someone who knows where to dig."

Liu thought about the failsafe. The explosion had destroyed the treasury chamber, but it had not collapsed the mountain. The primary charge had never fired. The gunpowder beneath the chamber was still there, and the third stomach—the fourth stomach, if the old woman was right—was still intact.

"If the object is still in the mountain," he said slowly, "and if we could recover it—"

"You would have something worth more than gold," the old woman said. "Something that could buy more than a prefecture appointment. Something that could buy an audience with the Empress herself."

"Or get us killed," Zhang said. "We barely escaped that mountain. We're not going back."

"We don't need to go back." Liu turned to Li. "The schematic you copied from the loom. Does it show the gunpowder chamber?"

"Yes. The layout is detailed. The charges are in a sub-level beneath the treasury. The primary detonator is connected to the main gear train. If the gear train was frozen by my wedges, the primary charge is still intact. Undamaged. Accessible."

"Then the chamber beneath it—the fourth stomach—is also intact."

"In theory. But we'd need to dig through the collapsed treasury to reach it. That would take weeks. Months."

"Not if we knew where the ventilation shaft was." Liu turned back to the old woman. "Your grandmother. Did she describe the shaft she escaped through?"

The old woman smiled. It was a thin, knowing smile, the smile of someone who had been waiting for this question for a very long time. "She described it in great detail. She drew maps. She made me memorize them when I was a child. She said one day someone would come from the mountain, and they would ask about the shaft, and I was supposed to tell them everything."

"Why would she want you to tell us?"

"Because the object in the fourth stomach was not supposed to stay buried forever. The monks sealed it to protect it from the Emperor, but they always intended for it to be recovered. They left instructions. Maps. Keys. The jade seed was one of the keys. The transfer gear was another. The monks wanted someone worthy to find the object and deliver it to its proper destination."

"Which is where?"

"Chang'an. The Great Wild Goose Pagoda. The abbot's brother was a Buddhist monk who had fled to the Tang court. The object was meant for him. For his monastery. For safekeeping until the world was ready for it."

Liu looked at Li. Li looked at Zhang. Zhang looked at the old woman and the goats and the frozen river behind them.

"What kind of object are we talking about?" Zhang asked. "A statue? A relic? A weapon?"

"I don't know. But my grandmother said it was the reason the Sasanian empire fell. The prince was bringing it to the Tang court as a peace offering, and when it was stolen, the Persian king blamed the Tang emperor. The alliance collapsed. The Arabs conquered Persia. A hundred thousand people died. All because of whatever was in that prince's saddlebag."

A silence fell over the group. The goats bleated. The wind stirred the snow. The frozen river groaned beneath its load of ice.

"We need to make a decision," Liu said finally. "We can continue east to Chang'an. Try to find whoever in the Secretariat is hunting us. Trade the jade seed for our lives. Or we can go back to the mountain. Find the ventilation shaft. Recover whatever is in the fourth stomach. And then ride into Chang'an with something that might actually protect us."

"The edict is still in effect," Zhang said. "Every day we delay, the army gets closer. The inspectors get more suspicious. The death warrant gets closer to our necks."

"The edict won't matter if we bring the Empress something she's been hunting for decades. Something her predecessor killed a Sasanian prince to obtain."

"You're assuming the Empress knows about the object."

"She knows. The courier was carrying the map to the Secretariat. Someone in the Secretariat knows about the mountain, knows about the gold, knows about the assassination. If they know all that, they know about the fourth stomach too."

Li spoke up. "The old woman said the monks sealed the fourth stomach to protect the object from the Emperor. That was two dynasties ago. The Tang emperors—the current Empress—they might not know the object still exists. They might think it was destroyed when the mountain was sealed."

"Then we'd be bringing them news of something they thought was lost. That's even better. That's leverage."

Zhang was silent for a long moment. Then he said, "I came on this journey because I wanted gold. I stayed because I wanted to survive. Now you're asking me to go back into a mountain that nearly killed us, on the word of a goat-herding grandmother, to find something that may or may not exist, so we can deliver it to an Empress who may or may not want it, in exchange for pardons that may or may not be granted."

"That's an accurate summary."

Zhang looked at the sky. The sun had climbed past its zenith, and the light was beginning to soften into the long gold of afternoon. He looked at the river. He looked at his horse. He looked at his hands, which were empty of gold but still attached to his wrists.

"I'm still here," he said. "That means I'm in."

The old woman nodded, as though she had expected this. "The ventilation shaft is on the eastern slope of the ox's spine. There's a false rock—a granite slab with an iron ring hidden on its underside. My grandmother said it was covered by a juniper grove, but the grove was burned years ago. The slab might be exposed."

"How do we find it?"

"You'll need the map. My grandmother's map. I have it in my hut." She turned and began walking toward a cluster of felt tents half-hidden in a fold of the hills. "Come. I'll show you. And I'll give you something else. Something my grandmother said should go to whoever came looking for the fourth stomach."

"What is it?"

"A key. The final key. The monks sealed the fourth stomach with a mechanism that requires three components: the jade seed, the transfer gear, and a bronze cylinder. The jade seed opens the door. The transfer gear aligns the mechanism. The cylinder—" She paused and looked at Liu. "You already have the cylinder, don't you? The one that held the seed and the gear."

Liu drew the bronze tube from his boot. The old woman looked at it for a long moment, and her expression was strange—half triumph, half grief, as though she was seeing something she had been waiting her whole life to see and dreading every moment of the wait.

"That's the third key," she said. "You've been carrying it all along. The monks designed the mechanism so that the three keys would be separated. The courier carried two. The map carried the instructions. The third key was supposed to be in the Directorate for Armaments, in the hands of the chief clockmaker."

"Suwen," Li breathed. "Suwen was supposed to have the third key."

"The clockmaker was supposed to have the cylinder. The courier was supposed to have the seed and the gear. They were supposed to meet in the mountain and open the fourth stomach together. But something went wrong."

"The Empress tried to kill Suwen. She fled. The courier had to find the cylinder on his own. He carried all three keys. When he died—"

"The keys came to you." The old woman stopped walking. She turned to face them, and her face was suddenly very serious. "Do you believe in fate, soldier?"

"I believe in decisions," Liu said. "And consequences."

"Then make your decision carefully. My grandmother said the object in the fourth stomach was not meant for everyone. She said it would change whoever found it. She said it had changed the monks. It had changed the prince. It had changed everyone who ever laid eyes on it."

"Changed them how?"

"She never said. But she prayed every night until she died. Not for herself. For whoever would eventually open the fourth stomach. She prayed they would be strong enough to carry what they found."

The old woman turned and continued walking toward the tents. Liu watched her go, and the cold that had settled into his bones seemed to deepen, spreading through his chest and into his heart. He had never believed in fate or gods or the power of prayers. But he believed in the weight of decisions, and the weight of this one was growing heavier with every step.

Somewhere behind him, the mountain sat in its mantle of snow and smoke, waiting. And somewhere beneath it, in a chamber that had not been opened in a century, something was waiting too.