The moment the headlights sliced in from the street, everyone in the store looked outside.
Not one of the Second Team's black SUVs this time.
A white refrigerated hospital van.
Its side still carried the half-faded remains of a medical logo, and the front bumper and passenger-side door were scraped raw, as if it had spent the whole drive grinding against guardrails just to stay moving.
The second it crossed into the ten-meter barrier, the passenger door flew open and a woman almost fell out with a child in her arms.
"Don't touch the door," Lin Wu said immediately.
The woman froze mid-step.
Her face was bloodless, eyes red-rimmed, and in her arms the little girl was wrapped deep in a down coat, half her face flushed with fever. One hand, loosely wrapped in cloth, was pinned hard against her chest like she wouldn't let anyone near it.
"Xu Tang?" Lin Wu asked.
"Yes, yes, that's me." The woman nodded frantically, her voice shaking. "My daughter's freezing—she was saying something was crawling under the skin on the back of her hand—"
"Registration first." Lin Wu's tone stayed perfectly steady. "Put what you brought on the counter."
Xu Tang visibly faltered, like emotion surged up so fast it nearly broke through.
But then she looked up—and saw the store lights, the orderly shelves, and the silent figures of the Second Team near the door.
She swallowed the panic back down.
Then she set her bag on the counter and began unloading it with shaking hands.
A jewelry box.
A stack of cash.
A DSLR camera.
A ring of car keys.
Lin Wu glanced over everything once and wrote two neat lines into the ledger.
Xu Tang — First Marked ConsultationDeposit: jewelry, camera, vehicle keys
"Those go down first," Lin Wu said, lifting her gaze. "If it's not enough, you add more."
Xu Tang's lips trembled, but in the end she only nodded.
"Okay."
"Put the child on the treatment table."
At the side of the register, where there had only been a cleared patch of floor before, a narrow silver treatment table had risen at some point. Smaller than the isolation bench, less cold-looking too, but still ringed with the same pale blue light.
The system prompt hovered in front of Lin Wu.
[Temporary Treatment Table ready.][First real-world marked subject: receivable.]
Xu Tang carried the girl over with obvious effort. Her arms were shaking badly.
The little girl was drifting in and out of awareness. Her lashes were damp, her cheeks hot with fever, but the wrapped hand stayed pressed stubbornly to her chest as if some part of her already knew it was wrong.
"What's her name?" Lin Wu asked.
"Tangtang." Xu Tang's voice tightened. "Her name is Xu Tangtang."
"How old?"
"Eight."
"How long after touching the wall did she start feeling wrong?"
"Less than twenty minutes," Xu Tang answered immediately. "At first she just said she felt cold. Then she kept saying her hand hurt, like that black line on the wall had crawled into it…"
Lin Wu nodded once and looked toward Zhou Qiming.
"Professor. Unwrap it."
Zhou didn't waste a word. He pulled on gloves and began loosening the cloth with extreme care.
The moment the wrapping came off, several people in the store unconsciously lightened their breathing.
There was no cut.
No blood.
But on the back of the little girl's hand, three fine black lines were slowly visible under the skin. They looked as though they had only just started seeping outward, the color still faint but steady. Two of the strokes already showed a clear structure, as if they were working their way toward the shape of the character "open."
Xu Tang's tears spilled instantly.
"I wasn't lying… there really are words…"
"Don't cry," Lin Wu said.
She didn't say it harshly.
Just steadily.
And somehow Xu Tang really did force the sound back down.
The system refreshed quickly.
[Marked Subject: Initial Stroke Phase][Current word-intent: Open (incomplete)][Recommendation: Can be rewritten.]
Good.
It could be changed.
A small brightness flashed through Lin Wu's eyes. She opened one palm. The black snow-mark still rested against the gold tracings there, like a dark drop of ink sitting quietly on a page.
"System. How?"
[Use the snow-mark as the pen.][Break its momentum first. Then write your own.][Current writable character: Stop.]
Still Stop.
That was enough.
For something only in the opening-stroke phase, one Stop was more than enough.
"Will it hurt?" Xu Tang asked quietly, staring at Lin Wu's hand.
"Yes," Lin Wu answered honestly. "But if I don't rewrite it, it'll hurt more later."
Xu Tang instinctively pulled Tangtang's shoulders close, her eyes red, but she still nodded.
"Do it."
Tangtang must have heard them. She looked up hazily and asked in a tiny voice,
"Mom… are there little bugs in my hand?"
Xu Tang nearly broke right there. She lowered her forehead to the child's and whispered,
"No. Big sister's going to chase them out."
Lin Wu said nothing after that.
She stepped to the treatment table and bent down to look at the girl's hand.
The opening strokes were still light.
But the intent of "open" was already there.
That was the real danger. Not the black lines themselves.
Once the meaning finished standing upright, it wouldn't be a matter of wiping off a few marks anymore.
"Tangtang," Lin Wu said, her voice softer than usual, "when I touch your hand, it'll feel cold, and it'll hurt for a little bit. Don't move."
The little girl's eyes were clouded with fever, but she still nodded obediently.
"Okay…"
Lin Wu raised her right hand. Her index finger hovered over the three black strokes.
The snow-mark in her palm cooled instantly.
Then that coldness flowed straight into her fingertip, as if a droplet of black snow had been wrapped in gold and sharpened into a real writing instrument.
"Which stroke first?" she asked inwardly.
[Break the top horizontal first.]
Good.
Lin Wu lowered her finger and pressed lightly against the uppermost horizontal line.
The second she touched it, Tangtang shivered from head to toe. Her little face crumpled, and tears flooded her eyes almost at once.
Not screaming.
Just that tiny, helpless tremor of someone trying very hard to endure something too strange and too painful.
Xu Tang's hands shook violently at the bedside, but she forced herself not to interfere.
Lin Wu's hand stayed steady.
She did not trace the line.
Instead, she pressed lightly downward, as if breaking the entire horizontal stroke in the middle.
The black line trembled.
Not imagined.
Actually trembled.
The stroke dimmed in the center, visibly thinning.
The system prompt appeared immediately.
[First break successful.]["Open" momentum weakened.]
Good.
It worked.
"Second step," Lin Wu murmured.
She lifted her finger and set it down again—this time not to break, but to write.
A single vertical line.
Straight down the center of the back of the girl's hand.
Almost exactly like the time she had written Stop across the pharmacy shutter.
Only thinner.
Harder.
Because this time the page wasn't a wall or a metal door.
It was skin.
The moment the pale gold vertical stroke landed, Tangtang let out a tiny cry she couldn't hold back, and tears rolled down her face.
"It hurts…"
"Almost done," Lin Wu said.
Her third stroke came faster.
Horizontal.
Then the last dot.
The instant that final point landed, the black lines on Tangtang's hand—the ones that had been growing toward Open—froze all at once.
Then the upper line cracked first.
The right-side vertical followed.
And at last even the last bit of blackness at the base of the shape was slowly forced apart, dissolving into a few strands of pale gray vapor that drifted off the girl's skin.
The gold Stop remained.
Small.
Quiet.
Set right in the center of the back of her hand.
Tangtang inhaled sharply.
Not from pain.
It sounded more like the cold thing that had been crawling into her bones had finally been pinned down.
She blinked twice, then whispered through tears,
"…it's not crawling anymore."
Xu Tang had been biting her lip so hard it had nearly turned white. Now the tears finally came fully, though she still covered her mouth to keep from making a sound.
Zhou Qiming stood beside the table, staring at the girl's hand, breathing as lightly as if he were afraid to disturb it.
"You really changed it…"
Not delayed it.
Not suppressed it.
Changed the opening stroke.
That was far more dangerous—and more significant—than just blocking black snow.
Because Lin Wu had started writing on people.
The system prompted again.
[First successful marked-word rewrite.][Reward obtained: Residual Stroke Intent ×1][Notice: Mastery of "Stop" has increased.]
Good.
That thought had barely settled in her mind before her own palm cooled sharply.
Not Tangtang's hand.
Her own.
Lin Wu looked down.
The black snow-mark in her palm, which had once been no more than a small blot, now showed a faint extra line along one edge—as though it had grown ever so slightly.
Not out of control.
More like it had fed on the residue from the rewritten stroke.
Her gaze shifted a fraction.
It could grow.
And apparently it would grow through more writing, more rewriting, more suppression.
"How is she?" Qin Zheng asked suddenly.
Lin Wu looked up at him, and when she answered, her tone had already returned to that perfectly level calm.
"First consultation successful."
"First marked-subject treatment fee doubles from here."
Qin Zheng: "…"
Pei Wan lowered her head, and it looked suspiciously like she was smiling.
Even at a moment like this, Lin Wu had still remembered to raise the price.
But Xu Tang didn't find the sentence harsh at all. She nodded almost frantically.
"Double, triple, anything—as long as she's okay—"
"Not so fast." Lin Wu cut in. "Tonight we only stopped the opening stroke. She still needs observation afterward."
She lowered her eyes and added a new line to the ledger.
Tangtang — under observation after rewrite
Then she looked back up at the mother and daughter.
"You're not leaving tonight."
Xu Tang froze. "Why?"
"Because your daughter's hand isn't an ordinary injury anymore." Lin Wu's tone stayed flat. "Anyone whose word has been rewritten stays in my store for first-night observation."
Xu Tang's first instinct was to ask how much that would cost.
But before the question could leave her mouth, the pale blue ring around the treatment table flashed once.
A new system notice appeared.
[First-subject overnight observation function activated.][Temporary bed capacity +1]
Excellent.
The store was growing new services faster than most people learned their own names.
Lin Wu pointed toward the corner.
"That side."
The patch of floor where several boxes of bottled water and tissues had been stacked silently folded inward. A narrow cot rose up from beneath, with a small warm yellow lamp beside it.
Xu Tang stared as if she'd forgotten how.
She had already seen enough impossible things tonight to stop trusting her senses, but every new thing this store grew still made it feel like she had stepped into a dream.
"Move there first," Lin Wu said. "Tangtang stays under observation tonight. You stay by the bed. No wandering."
Xu Tang nodded instantly.
As she carried the child that way, Tangtang suddenly turned her head toward Lin Wu and asked in a dazed little voice,
"Big sister."
"Yes?"
"Just now… was somebody writing on my hand?"
The whole store went quiet for a second.
Xu Tang's face turned pale all over again.
"Don't say strange things—"
But Tangtang wasn't looking at her mother.
She was looking at Lin Wu. Her eyes were wet, fever-bright, and completely earnest.
"When it was writing, I heard someone say…"
She paused, clearly trying very hard to remember.
"'Outside the door… cold.'"
The sentence floated down like dust.
Lin Wu's eyes sharpened instantly.
Not because it was a child saying something eerie.
Because it sounded far too much like a leftover echo from the other side of a door.
Zhou Qiming's face changed too.
"She's not imagining it," he said quietly. "People in the opening-stroke phase sometimes hear residual echo from the other side at the moment the word lands."
Xu Tang went pale all over again.
Lin Wu, however, did not immediately question Tangtang further.
She lowered her eyes instead to the snow-mark in her own palm—the one that now carried one faint new line.
Good.
So the rewrite had not only given her Residual Stroke Intent.
It had really dragged a sliver of voice back with it through Tangtang's hand.
She looked up toward the northern rupture, her gaze darkening by degrees.
Outside the door, cold.
That wasn't a meaningless phrase.
It sounded more like this:
Whatever had been trying to write Open on Tangtang's hand—
was still outside.