He started with the shutter.
The warp was in the lower left corner where the wood had absorbed moisture at some point and dried unevenly. A carpenter could fix it properly for a fee Lin Yushu did not yet want to spend. In the meantime, two wooden wedges driven into the hinge gap at the right angle brought it flush enough to close without catching. He found the wedges in a timber offcuts bin at a yard two streets over, paid three copper for a handful, and had the shutter working before the morning was half gone.
The bracket on the broken display shelf took longer. The wall plaster had crumbled where the original bracket had been pulled free, leaving a soft patch that would not hold a new screw. He mixed a small batch of patching compound from a street vendor who sold building sundries out of a cart, let it dry for two hours, and fitted the bracket while the plaster was still slightly green. It held. He would check it again tomorrow.
The crack above the door he left. It was cosmetic, Clerk Fang had said so, and fixing it now would cost time he did not have. He painted over it instead with a brush and a small pot of whitewash, which made it less visible without lying about its existence. He thought his mother would approve of this approach.
By afternoon the ground floor looked less abandoned and more merely empty, which was a different thing entirely.
· · ·
His immediate neighbours found him over the following two days. Not all at once. Whenever he happened to be outside with the shutter open, someone appeared.
The woman to his left ran a small scribing business, document copying and letter writing for people who needed the service and could not do it themselves. Her name was Widow Chen, though she offered no explanation of the widow part and he did not ask. She was perhaps fifty-five, precise in her movements, and she had been on Millstone Lane for eleven years. A mortal, no cultivation at all, which meant she noticed the shutter because she had to live next to it rather than because she had the luxury of ignoring small inconveniences. She told him about the eleven years within the first three sentences, which he understood to mean it mattered to her that he knew she was established here.
"The previous tenant," she said, nodding at his shopfront, "sold dry goods. Competent enough man but untidy. You have already improved the shutter, I notice."
"It was catching," Lin Yushu said.
"Yes," she said. "For two years." She returned to her work.
The shop to his right was a tea merchant, a heavyset man named Master Ou who had a habit of standing in his own doorway with a cup and watching Millstone Lane with the satisfaction of someone who had made peace with his place in it. Qi Refining level two, at a guess, old enough that he had probably stopped advancing years ago and stopped caring not long after. He was friendly in the undemanding way of people who have nothing to prove to a newcomer.
"What are you selling?" he asked on the second morning.
"Cultivator materials. Herbs, raw components, some finished goods."
Master Ou considered this. "The Shen family has the herb trade fairly sewn up in this town."
"I know."
"You're not worried?"
"Not yet," Lin Yushu said. Master Ou laughed at this, apparently finding it an acceptable answer, and offered him a cup of tea, which Lin Yushu accepted.
While they stood there a cultivator walked past on the other side of the lane, Shen green, Qi Refining level six or seven by the density of his aura. He did not glance at either of them. Lin Yushu watched him pass and said nothing. Master Ou refilled his cup.
"One of the Shen family's men," Master Ou said. "Does his morning rounds. Never buys anything on this street." A pause. "His kind don't interact with low level cultivators like us. As long as you don't get in his way, you won't exist to him."
He said it without bitterness, the way you state a fact about weather.
· · ·
The shop directly across the lane sold cultivation tools, whetstones and knife blanks and the small brass instruments used for measuring qi flow during practice sessions. The owner, a lean man named Brother Fei who appeared to be somewhere between thirty and fifty, was Qi Refining level three and carried himself with the settled ease of someone who had reached that level a long time ago and treated it as sufficient. He came over on the third morning with a bowl of something hot wrapped in cloth.
"Neighbours bring food here," he said, by way of explanation. "It's what people do on Millstone Lane."
Lin Yushu accepted the bowl. It was a rice porridge with pickled vegetables, considerably better than what he had been eating from the inn. He thanked him.
"You're the one who fixed Widow Chen's noise problem," Brother Fei said, meaning the shutter. "She has been complaining about that shutter since the previous tenant moved in. Two years." He looked at the door. "You repainted too."
"It needed it."
Brother Fei nodded as though this settled something. "Good. A shop that looks after itself looks after its neighbours." He went back across the lane without further ceremony, leaving Lin Yushu with the bowl and the impression that he had just passed some kind of test he had not known he was taking.
· · ·
He spent three days walking the town's markets before he opened his own doors.
He went methodically, district by district, carrying a small notebook he had bought for two copper coins and writing down prices in a shorthand his grandfather had taught him years ago for tracking the herb garden's yields. The Shen quarter's apothecary shops were his first stop. Common irongrass sold for three gold per bundle of ten stems. Dustmoss went for five gold per dried portion. Rootweed, harder to find and more useful, was listed at one low grade spirit stone per bundle in the better-stocked shops, eight gold in the smaller ones moving older stock.
He moved through the talisman stalls in the Luo quarter next. A basic single-use dust-removal talisman, the kind that cleared a room of grit and loose debris in a single activation, cost four low grade spirit stones. An alarm talisman, paper-thin and barely larger than his palm, inscribed to pulse with qi when crossed by a stranger's spiritual signature, ran to eight spirit stones for the standard grade. He examined them carefully at each stall without buying, asking questions about activation methods and duration. The stall keepers answered readily enough. Information was free when you looked like you intended to spend eventually.
Beast materials were harder to price because supply was inconsistent. He found one stall in Tianping itself, tucked between a leather worker and a tool sharpener, run by a quiet man who bought from hunters passing through and sold to whoever needed the components. Grey rat hide was listed at fifteen gold per piece for standard grade, twenty for clean cuts. Rat teeth sold singly at eight gold each. The claws, harder and denser than the teeth and better suited for weapon cores and arrowhead reinforcement, went for twelve gold a piece or thirty for three.
He wrote it all down and did the arithmetic that evening in his third floor room, sitting on the bed frame with the notebook on his knee and a lamp he had bought secondhand from a stall on the north market road.
His dungeon materials would sell at or slightly below the going rate to start. Not enough below to alarm anyone, not enough above to invite questions about quality. Once he had a reputation for consistent stock he could adjust. The cover story for sourcing was already in place. What he needed now was a sign, a price board, and enough stock visible on the shelves to look like a real shop rather than a man selling things out of a bag.
· · ·
On the fourth day he bought the talismans.
The dust-removal formation first, from a mid-sized stall in the Luo quarter where the quality was reliable and the vendor did not ask unnecessary questions. Four spirit stones. He activated it in the ground floor that evening after bolting the door, and watched a year's worth of settled grit lift from every surface and condense into a small grey cloud that drifted to the corner he had designated and compacted itself neatly. The shelves were clean. The counter was clean. Even the windowsill, which he had scrubbed twice by hand, looked different under the formation's attention.
He stood in the middle of his clean shop and thought that four spirit stones was not an unreasonable price for what had just happened.
The alarm talisman took more thought. Eight spirit stones for the standard grade, but the standard grade covered only the ground floor entrance. He wanted the whole building. The vendor he had spoken to in the Luo quarter had mentioned a wider-range version for fourteen spirit stones that covered up to three access points simultaneously, door, window, and a third point of the buyer's choosing.
He went back the next morning and bought the fourteen-stone version.
The inscription process took the better part of an hour, the vendor walking him through the activation sequence with the patience of someone who had done it many times. The talisman was affixed to the interior wall beside the main door, its pale surface marked with fine brushwork lines that meant nothing to Lin Yushu's untrained eye but apparently meant a great deal to anyone trying to enter the building without his qi-signature unlocking it first.
"Activate it before you sleep," the vendor said. "Deactivate when you open in the morning. If it pulses three times in quick succession that means something large has crossed a threshold. Single pulse is a cat or a rat. Two pulses is a person."
"What if I forget to deactivate it before I open?"
The vendor looked at him. "Then every customer who walks through your door will trigger it and you will have a very unpleasant morning." He paused. "It has happened. To others."
Lin Yushu thanked him and walked home with the vendor's activation instructions written in the notebook beside the price survey.
· · ·
That night he activated the alarm for the first time before climbing to the third floor. The talisman gave a single low pulse as he passed back through his own door, recognising his signature and recording it, and then went quiet. He lay on the bed frame with his coat as a blanket and listened to Millstone Lane settle into its nighttime sounds.
Somewhere below, the clean shop waited. Shelves fixed and dusted, the counter clear, the red door repainted that afternoon with a pot of lacquer he had mixed himself to a slightly deeper shade than the faded original. A sign would go up tomorrow, plain wood with the shop name brushed in black. He had not decided the name yet. He would decide it in the morning.
The ring was warm on his finger, faint and steady, the way it had been since he had bound it. He had come to think of it as a kind of background presence, not intrusive, just there. Like a second heartbeat that asked nothing of him until it did.
He closed his eyes.
The alarm talisman held its quiet watch over the three floors below, and the street outside went about its business, and Lin Yushu slept in his own building for the first time.