The word hit me harder than the mountain wind ever could.
"Sister."
Xie An called me quietly across the low table in the relay station's private room, his small voice cutting straight through the crackle of the brazier and the distant clatter of horses being stabled outside. I froze with a spoonful of millet porridge halfway to my mouth. Lantern light flickered across his serious face, twelve years old and already carrying the weight of a general's son. He looked at me like I was the only steady thing left in his world.
I set the spoon down before my hand could shake. The room smelled of woodsmoke and steamed onions, warm and close after the long chill of the pass. Silk robes clung to my skin, too heavy, too real. I am Xie Yunxiang here, princess and not the girl from Chengdu who had fallen asleep at her laptop. Not Gu Yunxiang anymore. The knowledge sat in my chest like a stone I could not swallow.
"You have been staring at the wall for a long time," he said. He pushed his own bowl aside and leaned forward on his elbows, the way a much older brother might. "Ever since we left the pass. Is it the marriage? You can tell me, i'm not a child."
I wanted to laugh or scream. Instead I forced a smile that felt practiced, the kind I used back home when professors asked about my thesis and I pretended I had not stayed up until dawn rewriting it. I knew Tang court etiquette better than most scholars alive. I could play this role, I have to.
"I am only adjusting to the road, An," I said. My voice came out smoother than I expected, carrying the soft accent of Nanzhao that somehow lived in my throat now. "The bells in the pass left an echo. Nothing more."
He studied me the way he might study a battle map. Those dark eyes missed nothing. "You always say that when something bothers you. Remember the time Father left for the border? You held your jade pendant so tight your fingers turned white, but you smiled at Mother and told her everything would be fine. I believed you."
The memory flickered in, uninvited. White orchids on a hillside. A girl my age pressing a pendant into a smaller boy's hand and promising the mountain would keep their father safe. It was not mine, it belonged to the body I wore. But it felt close enough to sting.
I touched the pendant, now hidden beneath the collar of my robe. The jade was warm against my collarbone, the same piece that had rested on my nightstand in Chengdu only hours ago, or days, or centuries. Time had stopped making sense.
Xie An reached across the table and covered my hand with his. His palm was small but callused from sword practice. "You do not have to be strong every moment, Sister. Not with me. Mother taught us that. She said even the strongest orchid bends in the wind so it does not break."
I bit the inside of my cheek instead of my tongue this time. I had to stop the nervousness, I squeezed his fingers once and let go, reaching for my tea instead. It was lukewarm, slightly bitter, exactly the way I imagined ancient tea might taste when it had traveled in saddlebags for days.
"You sound like Mother already," I told him, keeping my tone light. "Soon you will be giving me lectures on court manners before we even reach Chang'an."
He grinned, quick and bright, the first real smile I had seen on him since waking in the carriage. It made something in my chest twist. This boy worshiped me. The knowledge sat heavy. He saw me as his anchor, the clever older sister who read letters and understood politics and always knew what to say. I was none of those things. I was a history student who had spent her life romanticizing this exact world from the safety of a laptop screen. Now I sat inside it, wearing another woman's face, and the only thing I wanted was to wake up.
Bai Xueqing slipped into the room carrying a tray of fresh fruit and a small pot of hot water. She moved with the quiet efficiency of someone who had served royalty all her life. Her face was open, cheerful in a way that felt genuine, but I caught the sharp way her eyes scanned the corners of the room before she set the tray down.
"Princess Yunxiang," she said, bowing low. "The station master sends these pears from the southern slopes. It's very sweet this year, he claims. And more hot water for your tea. The journey tomorrow will be easier once we leave the hills."
Xie An straightened at once, the little general mode returning. "Thank the master for us. My sister needs to rest. We'll leave at first light tomorrow."
Bai Xueqing nodded and glanced at me. "Of course, young master. I will check on the horses and return to help you prepare for bed, Princess." She left as silently as she had come, the door sliding shut behind her with a soft click.
Alone again with my brother, the silence stretched. I poured fresh water into my cup and watched steam curl upward. The brazier popped. Outside, someone laughed near the stables, a rough male sound that reminded me how far I was from the quiet of my apartment. No traffic noise, no hum of a refrigerator. Only wind and fire and the boy who would not stop looking at me.
"You really are different tonight," Xie An said after a while. He picked up a pear and turned it in his hands, not eating. "Your eyes. They look like you are seeing everything for the first time, just like when we were kids and you first showed me the Orchid Valleys at dawn. You said the world looked new because the mountain had just woken up."
I swallowed hard. "New" . That was one word for it. I had studied Tang dynasty politics for years. I knew the shape of Chang'an on a map, the names of the palaces, the fragile balance of power between ministers and eunuchs. But knowing it from books and living in silk and lantern light were two different universes. My mind kept trying to process everything: the weave of the mats under my knees, the exact shade of red in the lacquered door frame and the way Xie An's robe smelled faintly of pine resin from the pass.
"I suppose the journey has made everything feel new," I said carefully. "The capital will be even grander. I have heard stories of the Daming Palace. The way the halls stretch on forever."
Xie An's face grew solemn again. "Father said Emperor Li Song is wise and gentle. Not like the stories of other rulers who spill blood for fun. He keeps his own counsel, though. Trusts few people. The alliance with Nanzhao is important. You will make it stronger, Sister. You always make things stronger."
The praise landed like a weight on my shoulders. I wanted to tell him the truth. That I was not the sister he remembered. That I came from a time where emperors were names in textbooks and jade pendants were museum pieces. That I had no idea how to be a wife or sister in this world, let alone a political bridge between kingdoms. I smiled instead, the confident curve of lips I had perfected in university debates.
"Then I will do my best to be worthy of that trust," I said. "For Nanzhao. For our family."
He beamed at me, the kind of open, worshipful look that made my stomach knot. He believed every word I said. It was easier than explaining the impossible.
We finished the meal in quieter conversation. He told me about a new sword technique his tutor had shown him before we left. I listened and asked the right questions, drawing on half-remembered details from the life that was not mine. The role fit better the longer I wore it. I could do this. I had spent years pretending to belong in lecture halls full of people who knew less than I did. This was just another stage.
Later, when Bai Xueqing returned to help me undress for bed, Xie An curled up on the mat beside my low wooden bed like he had done a thousand times before. The room was simple: whitewashed walls, a single window shuttered against the night, the brazier casting long shadows. I lay on my back under thick quilts and stared at the ceiling beams. The jade pendant rested cool now against my skin. Sleep hovered somewhere out of reach.
Xie An's breathing evened out. I turned my head and watched him in the dim glow. Small chest rising and falling. Hand tucked under his cheek. He looked so young. So certain that his sister would fix everything. The thought of disappointing him clawed at me harder than any fear of the road ahead.
I closed my eyes and tried one last time to get myself back to Chengdu, my apartment, laptop screen, documentary voice talking about calligraphy and rain tapping glass. Nothing happened, only the soft pop of the brazier and the distant hoot of an owl outside.
A knock sounded at the door. Light but urgent.
Bai Xueqing's voice came through, hushed. "Princess Yunxiang? Forgive the late hour. A messenger has just ridden in from Chang'an. He carries a personal letter from the emperor himself. He asks to speak with you at once. He says the emperor wishes to know if the journey has been kind to you and if there is anything you require before you reach the outer gates."
My heart lurched. Li Song is already reaching out across miles. The emperor whose face I had only seen in grainy historical recreations. The man I was being sent to marry.
Xie An stirred but did not wake. I sat up slowly, silk slipping from my shoulders, and stared at the closed door. The lantern light suddenly felt too bright. Too exposing.
Whatever came next, there was no turning back. The little boy slept peacefully beside me, trusting me with his whole small world. And somewhere far ahead in the darkness, an emperor waited for answers from a princess who was not who she claimed to be.