3. 姑子天子

The morning came not with light, but with a gray drizzle that turned the camp into a quagmire of mud and canvas. Pei Mingyuan had not slept—not truly—and when the guard's voice called him from the cot, he rose with the stiff joints of a man twice his age. His mind was still churning with Tang Jian's revelation, the name Li Yuanji repeating itself like a cracked bell.

He was led to the Prince's command tent, a spacious pavilion of heavy silk and treated leather, its interior lit by a dozen oil lamps despite the dim morning. The Prince of Qin sat at a field desk, reviewing a sheaf of dispatches, his face unreadable. Tang Jian was already there, seated on a low stool, his bandaged arm resting on his knee. A third man stood near the entrance—a tall, lean officer with a weathered face and a scar that bisected his left eyebrow. Pei Mingyuan recognized him as the guard who had first intercepted him at the picket line.

"Pei Mingyuan," the Prince said without looking up. "Close the flap. We have much to discuss."

Pei Mingyuan did as he was told. The tent fell into a humid stillness, the only sounds the patter of rain on canvas and the distant murmur of the camp stirring to life.

The Prince set down his brush and folded his hands on the desk. "I have sent riders to Yongfeng Granary," he began. "They will arrive by noon. I have also sent a sealed memorial to my father, the Emperor, informing him of the letter's contents—with certain omissions."

Pei Mingyuan's stomach tightened. "Omissions, Your Highness?"

"Omissions," the Prince repeated, his voice flat. "I have not mentioned the second page. I have not mentioned the names that Tang Jian claims to have seen. I have only reported that my uncle, the Minister of Works, has been communicating with Liu Wuzhou, and that he appears to be planning a betrayal at the granary. Nothing more."

Tang Jian stirred on his stool. "Your Highness, with respect—the Emperor deserves to know the full extent of the conspiracy. If his own son is involved—"

"If my brother is involved," the Prince cut in, "then my father deserves to hear it from me in person, not through a dispatch that could be intercepted, copied, or altered by a dozen hands between here and Chang'an. You know how the court works, Tang Jian. A letter is a weapon that can be turned against its sender."

The scarred officer spoke for the first time, his voice a low rumble. "The Prince is right. We have no proof of Li Yuanji's involvement beyond Tang Jian's recollection of a name on a page he saw weeks ago. That is not proof—it is a memory, and memories can be wrong, or they can be planted."

Tang Jian's face flushed with anger. "I was tortured for that memory. I did not invent it."

"I did not say you invented it," the officer said calmly. "I said it may have been planted—by Dugu Huai'en, by Liu Wuzhou, by anyone who wanted to poison the relationship between the Prince of Qi and the Prince of Qin. The rebels are not fools. They know that civil war is their greatest advantage."

Pei Mingyuan listened, his heart pounding. The officer's logic was cold but sound. A name on a page, seen through a haze of exhaustion and fear, was hardly enough to accuse the Emperor's fourth son of treason. And yet, the name had come from Tang Jian, a man of known integrity, a censor who had built his career on exposing corruption.

The Prince raised a hand, silencing the debate. "I have made my decision. Tang Jian will remain in my camp, under protection. Pei Mingyuan will stay as well. The scarred officer—whose name is Liu Shiran, by the way, a man I trust with my life—will lead a small force to Yongfeng Granary to secure the grain and arrest any of Dugu Huai'en's agents who are already in place. If we find evidence of my brother's involvement, we will act accordingly. But until we have that evidence, we keep silence."

Pei Mingyuan felt a strange mixture of relief and dread. The Prince was cautious—that was good. But caution could also be a mask for indecision, or for a hidden agenda that the Prince was not yet ready to reveal.

The meeting broke up. Liu Shiran departed to gather his men, his boots splashing through the mud. Tang Jian was escorted back to the medical tent, his face still tight with suppressed anger. Pei Mingyuan was left alone with the Prince, who gestured for him to sit.

"You have questions," the Prince said. It was not a question.

Pei Mingyuan sat. "Your Highness, I am only a scribe. I do not understand the ways of princes and generals. But I know what I saw—the letter, the blood, the missing page. And I know what Tang Jian told me. If the Prince of Qi is truly a traitor, then your father's throne is threatened from within, and no wall of silence will protect it."

The Prince studied him for a long moment. "You speak plainly. I appreciate that. Most men in your position would be trembling and offering flattery. You speak as though you have nothing to lose."

"I have already lost my colleague," Pei Mingyuan said, his voice quiet. "Li Mo is dead. I do not know where his body is, or if it will ever be found. I have lost my position, my room, my reputation—I fled Chang'an like a thief. I have nothing left to lose except my life, and I am beginning to think that life is not worth preserving at the cost of my conscience."

The Prince's expression softened, just a fraction. "Then you are a rare man, Pei Mingyuan. Rare and dangerous. Dangerous because you are honest, and honesty is the most subversive force in any court."

He rose from his desk and walked to the tent's entrance, looking out at the rain. "There is something you should know. My father—the Emperor—is not a simple man. He built this dynasty from the ashes of the Sui, and he built it with his hands, his wits, and his willingness to make alliances with men he did not trust. Dugu Huai'en is not just my uncle by marriage; he is my father's cousin, a blood relation. My father has known for months that Dugu Huai'en was flirting with Liu Wuzhou. He has known, and he has done nothing."

Pei Mingyuan's mouth went dry. "Nothing? Why?"

"Because my father believes in holding his arrows until the target is certain," the Prince said. "He believes that a treason that is prevented is a treason that can be denied. He wants the conspiracy to mature, to show all its branches, so that when he strikes, he strikes once and irrevocably. He is willing to let Dugu Huai'en go as far as the granary—as far as the rebellion itself—if it means he can uproot the entire nest."

The rain drummed against the canvas, a steady, insistent rhythm. Pei Mingyuan felt as though the ground beneath him had shifted, revealing a deeper darkness than he had imagined. The Emperor knew. The Emperor was waiting. And in the meantime, Li Mo's blood was on a desk, Tang Jian was broken from torture, and a scribe with a guilty conscience was being used as a pawn in a game he could not begin to comprehend.

"Then why did you send the memorial to the Emperor?" Pei Mingyuan asked. "If he already knows, why alert him?"

The Prince turned from the entrance, his face half-shadowed. "Because I want to see how he responds. My father is a master of misdirection. If he sends a message back ordering me to stand down, then I will know that he intends to protect Dugu Huai'en—perhaps to use him as a bargaining chip with Liu Wuzhou. If he sends reinforcements, then he intends to strike now. His response will tell me everything I need to know about where I stand in his calculations."

Pei Mingyuan had no words. He was a scribe, trained to copy documents and file them in neat order. He was not trained to navigate the labyrinths of imperial strategy, where fathers tested sons and uncles betrayed nephews and the entire empire turned on the point of a single decision.

"Rest now," the Prince said, his tone gentler. "Liu Shiran will return from the granary by evening. We will know more then. And Pei Mingyuan—do not leave the tent. Do not speak to anyone outside my immediate circle. There are eyes in this camp that do not belong to me."

He left the tent, and Pei Mingyuan was alone with the rain and the weight of a revelation that had just shattered every certainty he possessed.

The hours crawled. Pei Mingyuan tried to sleep, but his mind refused to quiet. He replayed the Prince's words, searching for hidden meanings, for clues to a puzzle he had not been told he was solving. The Emperor knew. The Emperor was waiting. And the Prince, the brilliant general who had never lost a battle, was also waiting—waiting to see which way the wind would blow.

At noon, a servant brought him a bowl of broth and a piece of flatbread. He ate without tasting, his eyes fixed on the tent's entrance, listening for the sound of hooves. None came.

In the afternoon, the rain slackened to a drizzle. The camp resumed its normal activity—the clang of weapons being sharpened, the shouts of drill sergeants, the rhythmic thud of marching feet. Pei Mingyuan paced the tent's interior, counting his steps, then counting them again.

He heard a commotion near the entrance—voices raised, a horse snorting, the splash of mud. He rushed to the flap and peered out. Liu Shiran was returning, his mounted men behind him, their faces grim. They had not brought any prisoners. They had not brought any wagons of grain. They had brought nothing but the news written on their faces.

Liu Shiran dismounted and strode toward the Prince's tent. Pei Mingyuan stepped out, heedless of the rain, and intercepted him.

"What happened?" Pei Mingyuan asked. "The granary—"

"Is empty," Liu Shiran said, his voice flat. "Not empty of grain—empty of men. The granary keepers are gone. The guards are gone. The records are gone. The only thing we found was a single scrap of paper, nailed to the main gate, with a single word written on it: 'Tomorrow.'"

Pei Mingyuan felt the world tilt. Tomorrow—the same date that was on the letter. The granary was already in Dugu Huai'en's hands, or in the hands of his agents. The Prince's riders had been too late.

Liu Shiran brushed past him and entered the Prince's tent. Pei Mingyuan followed, his heart hammering. The Prince was standing at his desk, his face unreadable as he listened to Liu Shiran's report.

"The keepers must have fled last night," Liu Shiran concluded. "The grain is still in the silos—they did not have time to move it. But they stripped the office of every document, every ledger, every seal. Whoever commands that granary now is a ghost."

The Prince nodded slowly. "They knew we were coming. They knew about the letter. Someone in this camp is feeding information to Chang'an—or to Dugu Huai'en's network."

Pei Mingyuan's throat tightened. The Prince had warned him about eyes that did not belong to him. Now he understood: the conspiracy had infiltrated even the Prince's inner circle.

"Tang Jian," Pei Mingyuan said, the name slipping out before he could stop it. "He was the only one who knew about the granary before your riders left. He knew about the missing page, the names, everything."

The Prince's eyes met his, and for a moment, Pei Mingyuan saw something dangerous there—a flash of suspicion, cold and calculating. Then the Prince's expression smoothed.

"Tang Jian was in the medical tent all morning," the Prince said. "Under guard. He could not have sent a messenger. And even if he could, he has no reason to protect Dugu Huai'en—Dugu Huai'en was the one who left him to be captured by Liu Wuzhou's forces. Tang Jian has every reason to want him destroyed."

"Then who?" Pei Mingyuan asked.

The Prince walked to the tent's rear panel and pulled aside a hanging. Behind it was a small table covered in maps and documents. He selected a folded piece of paper and handed it to Pei Mingyuan.

"Read this," the Prince said.

Pei Mingyuan unfolded it. It was a brief note, written in a clear, official hand:

The scribe has arrived. The Prince will act. Report all movements to the eastern post.

There was no signature. No seal. No indication of who had written it or where it was meant to go. But the handwriting was familiar—Pei Mingyuan had seen it before, on the daily rosters of the Ministry's personnel.

It was the hand of the chief clerk of the Ministry of Works, a man named Feng Rui, who had been transferred to the Prince's camp two months ago as a liaison officer.

Feng Rui was in the Prince's camp. Feng Rui was writing reports to someone at the eastern post. Feng Rui was the leak.

Pei Mingyuan looked up, his face pale. "Does Feng Rui know that I am here?"

"He does," the Prince said. "He saw you arrive. He was the one who briefed the guards on your presence."

Pei Mingyuan felt a cold hand grip his spine. The man who had written that note knew Pei Mingyuan by name, by face, by the letter in his pocket. If Feng Rui was the leak, then Dugu Huai'en already knew that the Prince had the letter. The Minister would be taking measures—desperate measures, violent measures.

"You will say nothing," the Prince said, his voice low. "You will go back to your tent. You will act as though you suspect nothing. Tonight, we will set a trap for Feng Rui, and we will see who he reports to. And Pei Mingyuan—"

The Prince placed a hand on his shoulder, a gesture that was almost fatherly.

"Keep the letter close. And do not sleep without a weapon."

Pei Mingyuan nodded, his tongue dry. He left the command tent and walked back to his own, the rain soaking through his robe, the cold biting at his skin. He entered his tent, stripped off his wet clothes, and wrapped himself in a dry blanket. Then he sat on his cot and waited.

Night fell, a black curtain that swallowed the camp's shapes and sounds. The rain had stopped, but the ground was still soggy, and the air smelled of wet earth and woodsmoke. Pei Mingyuan sat in the darkness, his hand resting on a broken tent peg he had sharpened against a stone—the only weapon he could find.

He listened for footsteps. He heard the normal sounds of the camp: the change of the guard, the distant whinny of a horse, the low murmur of a sentry's conversation. Nothing unusual.

Then he heard a soft rustle, just outside his tent. The flap lifted an inch, and a hand slipped through, holding a small clay bottle.

Pei Mingyuan held his breath. The hand placed the bottle just inside the tent, then withdrew. The flap fell back into place.

He waited a full count of fifty before moving. Then he crept to the flap, lifted it a crack, and peered out. No one was there. The path was empty, the tents dark.

He picked up the clay bottle. It was unsealed, and a faint, bitter smell rose from its mouth. He did not need to taste it to know what it was—he had seen enough poisonings in the Ministry's records to recognize the scent of monkshood extract.

Someone had tried to kill him. Not with a blade or a garrote, but with a silent dose of poison, slipped into his tent in the dead of night.

Pei Mingyuan's hands trembled. He set the bottle down and backed away from it, as though it were a live serpent. He looked at the sharpened peg in his hand, and he realized that the Prince's warning had been more than caution—it had been prophecy.

Someone in the camp wanted him dead. Not Feng Rui—Feng Rui would not risk a clumsy poisoning that could be traced. No, the poison came from someone more careful, more patient. Someone who had access to the medical stores. Someone who knew Pei Mingyuan's tent and his schedule.

Pei Mingyuan thought of Tang Jian's bandaged arm. Tang Jian had been in the medical tent all day. Tang Jian had access to medicines. Tang Jian had a motive—if Pei Mingyuan were dead, the Prince would have one less witness, one less voice corroborating the letter's origin.

But Tang Jian was also the man who had revealed Li Yuanji's name. Would he kill the only person who could confirm his story?

The questions circled like wolves in his mind. He stayed awake the rest of the night, the sharpened peg in his hand, his back pressed against the tent's center pole. He did not sleep. He did not dare.

At dawn, the first bugle sounded, and the camp stirred to life. Pei Mingyuan emerged from his tent, the clay bottle hidden in his sleeve. He walked directly to the Prince's command tent, bypassing the guards, and pushed through the flap.

The Prince was already awake, already dressed, already reading a dispatch that had just arrived. He looked up as Pei Mingyuan entered, and his eyes narrowed at the sight of the young scribe's haggard face.

"Someone tried to poison me," Pei Mingyuan said, holding out the bottle. "Last night. This was left in my tent."

The Prince took the bottle, sniffed it, and his face hardened. "Monkshood. Fast-acting. A single dose would have killed you before sunrise. Do you know who left it?"

"No," Pei Mingyuan said. "But I have a suspicion. And I think you will not like it."

The Prince set the bottle down. "Tell me."

Pei Mingyuan took a breath. "Tang Jian. He was in the medical tent all day. He had access to the poisons. He had a motive—I am the only other witness to his story about Li Yuanji. If I am dead, his testimony becomes the only account, and he can shape it however he wishes. He could accuse anyone—even you, Your Highness."

The Prince stared at him for a long, silent moment. Then he laughed—a short, bitter laugh that held no humor.

"Tang Jian," the Prince said, "is not your enemy. He is mine. Because I ordered him to leave that bottle. It contained nothing but water and a drop of bitter herb—no poison. I wanted to see who would come to warn you, and who would come to finish the job."

Pei Mingyuan blinked, his mind struggling to process the Prince's words. "You—you tested me?"

"I tested everyone," the Prince said. "And you passed. You brought the bottle to me. You did not drink it. You did not panic and flee. You came to me, the only person in this camp who can protect you. That is exactly what I needed to know."

The Prince walked to the tent's entrance and pulled aside the flap, revealing the gray morning. "Now I will tell you the real news. My father's messenger arrived an hour ago. The Emperor has ordered me to return to Chang'an immediately—alone, with a small escort. He has also ordered that Dugu Huai'en be arrested and brought to the capital for trial. And he has ordered that the Prince of Qi, Li Yuanji, be placed under house arrest, pending investigation."

Pei Mingyuan felt his knees go weak. The Emperor had acted. The Emperor had moved against his own son.

"The Emperor knows," Pei Mingyuan whispered.

"He knows," the Prince confirmed. "And he has chosen to strike. But Pei Mingyuan—there is something else. The messenger also brought a private note, from my father's own hand, addressed to me. It says, 'Do not return alone. Bring the scribe. He will bear witness before the court.'"

The Prince's eyes met Pei Mingyuan's, and in them was a mixture of warning and invitation.

"Tomorrow, we ride for Chang'an," the Prince said. "And you, Pei Mingyuan, will stand before the Emperor and tell him everything you know. Everything. Including the blood. Including Li Mo. Including the night you found the letter."

Pei Mingyuan felt the weight of the letter in his pocket, a tangible echo of a crime that was about to reshape the empire.

"Your Highness," he said, his voice barely a whisper, "if I testify against the Prince of Qi, I am signing my own death warrant. His allies will hunt me for the rest of my life."

The Prince placed a hand on his shoulder. "Yes. They will. But if you do not testify, then Li Mo's death will mean nothing. The empire will fall into a war that will drown us all. You have a choice, Pei Mingyuan—the same choice you had the night you took that letter. Run, or stand. What will it be?"

Pei Mingyuan looked at the clay bottle, the bitter water, the Prince's unreadable face. He thought of Li Mo's seal, still tucked in his pocket. He thought of the blood, the missing page, the name Li Yuanji.

And he made his decision.