I.
The years passed quietly in Chenjia'ao.
Nian'an grew tall and strong. The nail on his left pinky never stopped glowing on full-moon nights, a faint pearl-white light that he learned to live with. He wrapped it in cloth strips, tried to blacken it with ink, and once even asked his mother if he could cut it off.
Xiulan had refused.
"It is part of you," she said. "You don't need to hide it."
Nian'an did not ask why. He knew his mother's own nails told stories—waxy yellow, pearl-white, pure black, amber, silver, moon-white. Each color held a memory. He only knew that his own story, the one written in that glowing nail, was just beginning.
II.
Xiulan's nails never returned to a single color.
By the time Nian'an was fourteen, all ten of her nails had been taken and regrown so many times that they had settled into a permanent patchwork. The waxy yellow on her left pinky. The pearl-white on her left index. Pure black on her right ring. Amber on her right thumb. Silver on her left middle. Moon-white on her right pinky. The other four shifted with the seasons, taking on hues that had no names.
She had become a living record. Every nail held a memory—not just of debts and borrowings, but of the years that had passed since the contract was made. The amber nail held the sound of Nian'an's first laugh after the fever broke. The silver nail held the weight of Chen Wangtian's hand in hers on the night he finally stopped having nightmares about the pyre. The moon-white nail held the feeling of standing beneath the locust tree at dusk, watching the leaves stir in a wind that touched nothing else.
She was the keeper of the tree now. Not its handler—she had made that clear from the beginning. She was its companion. Its witness. Its living connection to the world of those who could grow what was taken.
Every month, on the night of the full moon, she walked to the old locust tree and sat on the moss-covered stone. She did not bring offerings. She did not speak prayers. She simply sat, her patchwork hands folded in her lap, and let the slow pulse of the tree move through her.
And every month, the old woman in red was there.
She no longer looked ancient. Her black eyes had faded to a deep gray, like storm clouds thinning after rain. Her hair was still white, still smooth, still pinned with that silver clasp. But her hands had changed.
All ten of her fingers now bore nails. Not borrowed ones. Her own. They were thin and pale, almost translucent, like the first leaves of spring. They grew slowly, painstakingly, and sometimes they still fell away. But each time they fell, she grew them back. Each time, they came in a little stronger.
"You are late," the old woman said one full-moon night, as Xiulan settled onto the stone beside her.
"I was watching Nian'an," Xiulan said. "He still wraps his finger on full-moon nights. He thinks I don't notice."
The old woman's gray eyes softened. "He is a good child. He has your stillness."
"He has your nail," Xiulan said. "Will it ever stop glowing?"
The old woman was silent for a moment, watching the moon through the canopy. "I do not know. I have never given anything before. Only taken. Perhaps it will glow as long as I live. Perhaps it will fade when I finally learn to let go completely. Perhaps it will pass to his children, and his children's children—a thread of connection that can never be severed."
Xiulan considered this. "I think I would like that. For him to carry something of this with him. Something that was given, not taken."
The old woman reached over and took Xiulan's hand. Her fingers were cool, like tree bark in shade. Her new nails pressed gently against Xiulan's patchwork ones.
"Thank you," she said. "For teaching me the difference."
III.
Chen Wangtian grew old.
It happened slowly, then all at once. His hair turned white, then wispy. His hands, once rough and strong, grew thin and trembled when he lit his pipe.
He never spoke of what had happened in the year Nian'an was nine. But sometimes, in the quiet hours before dawn, he would reach for Xiulan's hand under the quilt and press his thumb against her patchwork nails, one by one, as if counting them. As if reassuring himself that they were still there. That she was still there.
He died in his sleep, on a night when the moon was full.
Xiulan woke to find his hand still wrapped around hers, his breathing stopped, his face peaceful. She did not cry. She lay beside him until the sun rose, feeling the slow pulse of the locust tree through the thread that still connected her to it. When Nian'an came to check on them, she squeezed his hand and said, "Your father is gone."
They buried him on the back hill, not far from the hollow where the pyres had once burned. Nian'an carved a wooden marker with his name. Xiulan planted a locust sapling beside the grave—a cutting she had taken from the old tree at the village entrance, with the old woman's blessing.
"Will it grow?" Nian'an asked, looking at the slender sapling with doubt.
"It will," Xiulan said. "It has roots."
IV.
The village changed.
The old ways faded. New children were born, and their parents no longer warned them about the locust tree at dusk. The story of the Nail Borrower became a tale told by grandmothers to frighten children into coming home before dark—a story that no one truly believed. Old Wu's name was forgotten. The yellow ledger, if it still existed anywhere, was buried so deep that no one would ever find it.
But Xiulan remembered. And so did the tree.
One night, when Xiulan was very old, the old woman spoke.
"I think I am ready," she said.
Xiulan turned to look at her. "Ready for what?"
"To let go." The old woman's gray eyes met hers. "I have been rooted here for so long. Centuries. I have taken and borrowed and clung to every nail, every memory, every wisp of soul that passed through my branches. I thought I needed them to be whole. But I was wrong."
She reached out and took Xiulan's hand. Her grip was warm now, no longer the cold of ancient bark.
"You taught me that wholeness is not something you collect. It is something you grow. And I have grown enough. I have grown roots. I have grown stillness. I have grown, I think, something like a soul."
Xiulan squeezed her hand. "What will happen to the tree?"
"It will remain. It has its own life, separate from mine. I was never the tree. I was only... borrowing it. As I borrowed everything." She smiled, a real smile, unburdened by centuries. "I think it is time I returned it. And went wherever it is that old women go when they have finally learned to stop borrowing."
Xiulan felt the thread between them pulse, strong and steady. "Will I still feel you?"
The old woman leaned close and pressed her forehead against Xiulan's. "You will feel me in every nail that grows. In every child who keeps their hand in their pocket on moonlit nights. In every root that reaches deep enough to touch the place where I will rest. I am not leaving, Xiulan. I am only... becoming something else."
They sat like that, foreheads touching, until the moon set and the first light of dawn crept over the eastern ridge.
Then the old woman pulled back. Her form was fading, becoming translucent, like morning mist burning away in the sun.
"One last thing," she said, her voice growing faint. "The red packet. The one you buried beneath the stone. Dig it up. Give it to Nian'an. He will need it, when the time comes."
Xiulan nodded. "I will."
The old woman smiled one last time. Then she was gone.
The locust tree shuddered. A sound like a long, slow exhale moved through its branches. Leaves rained down, golden and red, carpeting the ground around the moss-covered stone. When the last leaf fell, the fissure in the trunk slowly, gently, sealed itself.
The tree was just a tree now. Ancient, yes. Rooted deep. But no longer a prison. No longer a borrower's haunt.
Just a tree.
V.
Xiulan dug up the red packet the next morning.
It was exactly where she had buried it, decades ago, beside the moss-covered stone. The red paper had faded to a soft brown, but it was still intact. She opened it carefully.
Inside lay ten nails. Not black. Not gray. Not any of the colors her own nails had become. They were ordinary nails, small and curved, the nails of a six-year-old girl.
The nails of Old Wu's sister.
Xiulan wrapped them carefully and tucked them into her sleeve. She would give them to Nian'an, as the old woman had asked. She did not know what he would do with them. That was not hers to decide.
She was only the keeper.
She pressed her palm against the trunk of the locust tree. The bark was warm in the morning sun. She felt no pulse, no thread, no ancient presence stirring beneath her touch. Only the slow, quiet life of a very old tree.
But when she closed her eyes, she could still feel it. A faint, steady rhythm, like a second heartbeat. Not in the tree. In herself. In the waxy yellow nail on her left pinky. In the pearl-white nail on her index finger. In the pure black, the amber, the silver, the moon-white.
The old woman had kept her promise. She had stopped borrowing. She had let go. And in letting go, she had given Xiulan something no one else had ever given her.
A piece of herself. Not borrowed. Given.
Xiulan opened her eyes and looked up at the canopy. The leaves were green and full, rustling in a breeze that touched everything now, not just the tree.
She smiled.
"Thank you," she whispered to the sky, to the roots, to the place where old women go when they have finally learned to stop borrowing.
Then she turned and walked back toward the village.
Behind her, the locust tree stood silent and still. Just a tree.
But its roots went deep. And deep in its roots, something slept. Not a borrower. Not a debt. Something quieter. Something that had learned, at last, to be still.
Xiulan did not look back. But her left pinky—the waxy yellow nail that had once belonged to Old Wu—grew warm. Not a warning. Not a memory. A gentle pull she had never felt before. Like something, deep in the roots, was slowly waking up.
She did not stop walking. But she knew, with a certainty that settled into her bones, that the story was not over.
Nian'an was fourteen years old.
The nail on his left pinky had never stopped glowing.