Yan carried his Ashen Marrow notes to the library desk after the morning shift. His hand was wrapped from knuckles to wrist. The cut had stopped bleeding, but the cloth pulled when he flexed his fingers. He kept the pages tucked beneath his left arm and opened the notebook with his uninjured hand.
Gu sat at the back table beside the locked cabinet. He took the notes and read the first entry slowly. The page recorded the pressure through the marrow, the stone weight splitting, and the steady warmth afterward.
“You wrote that the method strengthened you,” Gu said.
“That is what I felt.”
“You didn’t write that it caused no harm.”
“The stone cracked. The wall chipped. The method can still harm someone else.”
Gu nodded and marked a separate line in charcoal. “Then we agree on the distinction. Your marrow strengthened. The cut came from the rim.”
Yan turned the page toward him. “I wrote that the metal edge split my skin.”
“Good. Keep the cause beside it.” Gu did not mix the two findings. “The internal cost changed for you. The external impact did not.”
A soft knock came from the library entrance. Ning stood there with a small covered pot in one hand and her medicine pouch over the other shoulder. She had taken the cheaper broth from the quarters and brought it while she passed on the way to her shift.
Her gaze went first to the wrapped hand, then to the pages on the table. “Did the manual do that?”
“The metal rim did.” Yan closed the notebook so she could set down the pot. “The strike was controlled. The rim was closer than it looked, and I clipped it with my knuckles.”
“Did you hide this because you thought I’d make you stop?”
“No. I stopped striking until the skin closes.”
“Does it hurt?”
“When I bend the fingers. The marrow feels stronger. That part didn’t hurt.” He paused. “The internal strain changed into stronger bones. The external impact split the skin.”
Ning looked from his hand to Gu. “You watched the practice?”
“I did,” Gu said. “The technique’s warning is real for ordinary cultivators. Yan followed the corrected route. The rim was badly made.”
“Would you have stopped him if the sequence went wrong?”
“Yes.”
“Could you stop the damage after the force began?”
Gu answered plainly. “I can call the count. I can’t promise to undo the force.”
Ning took that in. She did not scold Yan or ask Gu to forbid the practice. She pulled the pot closer and checked that the lid had not loosened. “Does the technique help you earn money, or does it only satisfy your curiosity?”
“Both,” Yan said. “The strength may help me pass a future examination. And I enjoy feeling capable after years of hauling waste.”
“Then be careful enough to keep the hand you work with.”
“I will.”
“Choose a stable target. Keep Gu present until you know how to control the force.”
“I agreed to that.”
Ning looked at the wrap. “And let the cut close before you strike again.”
“I will.”
She took the bandaged hand gently and turned it enough to see whether the cloth had slipped. Yan held still. The pad remained clean. She did not touch the cut itself.
“Good. I have to go.” She left the medicine pouch beside the pot while she straightened the strap on her shoulder. “That broth is for both of us. Don’t let it sit until it’s cold.”
“I’ll bring it home after the library.”
“Bring the pot, not just the bowl.”
“I know.”
Ning headed for her shift. The medicine pouch went with her; the covered broth stayed at the table. Yan watched her cross the doorway, then returned to the notebook. He did not need to conceal what happened to the hand. The record was clear enough to show how the method helped him and how the rim had hurt him.
Gu returned the Ashen Marrow Scripture to its case and checked the red warning against the corrected sequence. He locked it in the cabinet. “The next strike will wait until your hand is ready and the rim is replaced.”
“Will I need you there?”
“Yes. Until you know the range of the force.”
Yan added a second line to his notes: the injury had come from a metal rim, not the technique’s internal strain. He recorded the cloth wrap and the pain when he flexed. Gu read the entry and added the time of the practice. The two records showed how the same lesson could strengthen Yan without making the world around him harmless.
The broth had cooled by the time Yan took off the lid. He tasted it and grimaced. “Too much water.”
“You’re a cultivator now,” Gu said. “Can’t you warm it with qi?”
“I can warm it. I can’t make it taste better.”
Yan poured the broth into the library’s small cooking pot and set it over the brazier. He could not use the injured hand to lift the pot, so Gu held the handle while Yan added a pinch of salt and a little ginger from his food wrap. They stirred it with a wooden spoon.
He tasted another spoonful. “Better.”
“You should write that in the notes too,” Gu said. “The method does not improve your cooking.”
“Strength is no substitute for seasoning.”
Gu laughed. Yan filled the bowl and covered the remaining broth for later. He carried it home with his uninjured hand, keeping the pot level. Ning was not there, so he set aside a second portion for her return.
He wrote the seasoning change on a scrap—not in the technique notebook, but on the meal list by the door. The repaired recipe was a more immediate success than the manual. Ning asked for seconds when she came home, and Yan served them with his good hand.
She noticed the bandage had stayed clean. “Did you tell Gu about the notice?”
“I did.”
“Why him?”
“He was there when I practiced. He needs to know what I feel if he is going to record the result and watch the next attempt.” Yan set the bowl down before shifting his chair. “I haven’t told Zhao.”
Ning thought about it, then nodded. “You chose someone who was careful with the warning.”
“He didn’t call the technique safe.”
“That’s a good reason to trust him with the truth.”
Yan passed her the ginger. She added a small piece to her bowl, tasted it, and asked for another serving. The broth was better warm, with the sharpness of the ginger and enough salt to bring out the vegetables. Yan gave her the larger portion, and she slid a spoonful back into his bowl.
“We can eat a little more without buying another pot,” she said.
“That’s the best kind of improvement.”