"Then it's my turn to negotiate the second route with Grey Tower."
The moment Lin Wu said it, the grey ticket box on the lowest shelf behind the door gave a faint flicker.
Not light.
More like a thin layer of frost slowly blooming across its black surface.
Then the lid cracked open on its own.
Inside, the grey-white slip that had already carried one reply rose upright again.
Every eye in the store was pulled toward it.
Qin Zheng didn't speak.
Neither did Pei Wan.
Even Zhou Qiming unconsciously held his breath.
Because everyone understood—
the first reply from Grey Tower had been a probe.
A test shipment.
A wager to see whether this door could actually do business.
The second would not be nearly so polite.
Lin Wu checked the system first.
[Grey Tower: Second Route Pending → Formal Negotiation][Notice: This round has escalated in tier][Note: The other side may no longer be asking only for goods]
Good.
That line made the light in her eyes sharpen.
Not just goods.
Which meant Grey Tower had finally acknowledged something important—
the most valuable thing in this store had never been what sat on the shelves.
Words began seeping across the paper.
This time faster than before.
Cleaner. More decisive.
First line:
[Second route available]
Second line—
a half-second pause.
[No collateral posted]
The third line formed, and the faces by the shelf changed all at once.
[One inspection at the threshold]
Threshold inspection.
Four simple words.
And they landed in the room like nails.
Qin Zheng's expression darkened instantly.
Pei Wan frowned.
By the rear shelf, Qi Ye's fingers tightened soundlessly.
Cen Dong had gone paler too, but she still looked to Lin Wu first.
"Inspection of what?" Zhou Qiming asked before anyone else could. His voice had already gone tight.
The paper didn't answer immediately.
As if it were waiting.
Waiting for the only person here who could actually decide.
Lin Wu looked at those four words and already had a pretty good idea.
The first route had been collateral because it was a trial.
If the second route came with no collateral and demanded "one inspection at the threshold," then whatever Grey Tower wanted now—
it wasn't trying to confirm whether the store could handle trade anymore.
It wanted to see her.
She didn't answer at once.
Instead, she lowered her head and wrote four words on a fresh page in the ledger:
Second Route — Threshold Inspection
Only then did she look back up at the grey slip.
"Be specific."
This time the paper moved.
One line after another surfaced across it, cold and fine as breath crystallizing over snow.
[Inspect the threshold, not the goods]
[Inspect the threshold, not the guests]
[Inspect only the shopkeeper]
The store went silent for a full two seconds.
Su Yu froze with Sui Sui still in her arms.
He Qing's face drained instantly.
Even the people on the second team outside visibly tensed.
Only the shopkeeper.
This was no longer a negotiation over cargo.
Grey Tower was calling for Lin Wu by name.
"Don't take it," Qi Ye said at once, his voice dropping hard.
Cen Dong followed immediately. "If Grey Tower opens the second route by calling for the shopkeeper, that means they're no longer satisfied with watching the door."
"They want to watch you."
"Yes," Lin Wu said.
She admitted it so quickly that even Qi Ye frowned.
"And you're nodding?"
"Because they do want to see me," Lin Wu said evenly. "And that doesn't necessarily mean the deal can't be made."
Qin Zheng finally spoke, his voice cold enough to cut.
"Have you lost your mind?"
"The first route was a route sale. The second one names a person. You really can't see what that means?"
"I can," Lin Wu said, turning to him. "It means I raised my price successfully."
Qin Zheng: "..."
Pei Wan lowered her head and shut her eyes for a moment.
She was becoming more certain of one thing—
most madmen were just chaotic.
Lin Wu wasn't chaotic at all.
Even her madness looked ledger-balanced.
The white text on the slip wasn't finished.
A fourth line surfaced slowly.
[Inspection complete, second route posted]
[Collateral: White Tower Inner Ring Entry Map]
Zhou Qiming almost stopped breathing.
The White Tower Outer Ring Safe Route had already been valuable enough.
But an Inner Ring entry map?
That was something else entirely.
That wasn't just passage.
That was admission into the deep zone.
Even Cen Dong's gaze shifted sharply. She straightened almost involuntarily.
"They're really willing to post Inner Ring access?" she murmured. "Grey Tower is bleeding for this one."
Qi Ye's eyes darkened further. "The more they're willing to post, the more valuable whatever they want to see must be."
Exactly.
Lin Wu knew that too.
Outer Ring. Inner Ring. Registry fragments. Route permissions.
On the surface, all of it looked like intelligence.
In reality, it was order.
It was the structure that held the other side together.
And now Grey Tower was willing to trade a deeper route—
for one inspection of the shopkeeper.
That meant that in their eyes, the value of this "shopkeeper at the threshold" was already worth more than an Inner Ring entry map.
Good.
Now that felt like proper pricing.
She lifted her eyes to the slip and asked bluntly:
"How?"
The paper went still.
Then a new line surfaced, finer and colder than the rest.
[One lamp]
[One hand]
[One call back to the door]
Zhou Qiming's face changed immediately.
"A call back?" he blurted. "Grey Tower wants her to respond with a full acknowledgment to the stable door?"
"What does that mean?" Pei Wan asked at once.
Zhou Qiming stared at the slip, his voice rough.
"What she did with the companion chamber earlier was low-grade contact. Two and a half seconds of resonance."
"But a call back to the door isn't listening, and it isn't looking, and it isn't a touch."
"It's speaking to a real stabilized door in a way the door accepts."
The room went quieter still.
Qin Zheng's gaze turned icy. "Then absolutely not."
"Why?" Lin Wu asked.
"Because you have no idea what happens once the door accepts you," Qin Zheng said, staring at her. "The first route was still testing. If you take the second step, you're not selling anymore."
"You're hanging yourself on the sign."
Good.
That was precise.
Lin Wu acknowledged it silently.
But she didn't show it.
She only turned to Zhou Qiming.
"In the worst case, what happens if I complete a full callback?"
His expression tightened.
"In the worst case, the side beyond the door recognizes you instead of recognizing the store."
"That means?"
"That means…" His voice grew drier with every word. "From then on, the store may no longer open just because it's lit."
"It may only open for you."
Su Yu understood it immediately.
Until now, there had still been some room to hide behind the shop.
But if Lin Wu answered the door fully—
then wherever she went, the door might follow.
She couldn't help whispering, "Wouldn't that basically mean… she becomes part of the door too?"
No one responded.
Because everyone knew that the simplest sentence in the room had come closest to the truth.
Lin Wu stood under the light and didn't speak at once.
She looked down at the words in her ledger:
Second Route — Threshold Inspection
The handwriting was steady.
So was she.
Was this dangerous?
Obviously.
But Grey Tower had already started lining up at her door. Reality-side command had already begun buying routes. The second route had already been brought to her counter.
At this point, if she pulled back just because she was afraid—
that wouldn't be caution.
That would be a drop in value.
And the one thing Lin Wu could not stand—
was being worth less.
"It can be negotiated," she said at last.
Qi Ye turned sharply toward her.
"But not at their original price."
For one beat, the atmosphere stalled.
Then everyone in the room felt the same absurd sense of inevitability.
Grey Tower had just called for her personally.
And her first instinct was not to refuse.
It was to counteroffer.
That was so perfectly Lin Wu it was almost ridiculous.
The white text on the slip stopped moving too.
As though even the other side were waiting for her price.
Lin Wu reached out and lifted the grey paper from the shelf.
It was cold.
Cold like a thin shard of packed snow.
But it didn't resist in her fingers. It didn't crumble either.
It simply let itself be held—
as if it really were waiting for the shopkeeper to quote back.
"Record this," Lin Wu said to the system.
At once, the translucent grey reply board surfaced again.
She lowered her head and began to write.
First line:
Second Route
Second line, in a steady hand:
Threshold inspection accepted, but the inspection is of the store, not the person
Qin Zheng's eyes sharpened.
Even Zhou Qiming paused.
Could she rewrite it like that?
Of course she could.
Grey Tower wanted the shopkeeper.
Lin Wu was forcing the word shopkeeper back into the store itself.
She wanted to know whether they truly wanted her—
or whether what they really wanted was confirmation that this threshold could continue to grow.
Third line:
Inner Ring route is not enough. Add half a registry of Outer Ring names
Cen Dong's eyes lit up.
Good.
She was biting at the customer list again.
Lin Wu kept writing.
The fourth line came slower, but harder.
The callback names no person. It names only the store.
The final stroke landed—
and the edge of the reply board flashed with an even thinner ring of silver.
The system started firing prompts rapidly.
[Store owner has initiated second-round bargaining][Current strategy: risk separation / identity re-binding / customer-source markup][Assessment: viable]
Good.
This wasn't random haggling.
Even the system approved the structure of it.
Lin Wu lifted a hand and sent the board back through.
The grey mist parted, and the reply slid beyond the shelf once more.
The whole store fell silent again.
This wait was longer than the first one.
Rain tapped against the windows.
The headlights outside were still on.
Inside the companion chamber, that silver-white "key skeleton" floated in stillness—
as if it too were listening.
More than ten seconds passed.
Then the grey mist behind the special shelf stirred forward very slightly.
Not like the door opening.
More like someone on the other side had let out a quiet laugh.
A fresh sheet of grey paper drifted out.
Only three lines appeared.
First:
[The shopkeeper knows how to bargain]
Second:
[Accepted]
Third, short and final:
[Midnight tonight. Inspect the store]
The room went still.
They had agreed.
Grey Tower had actually accepted her revised terms.
Not inspect the person.
Inspect the store.
Not immediately.
Midnight.
And they had really added the registry fragment too—
because at the bottom of the paper, a grey-white sliver no bigger than a fingernail slowly surfaced, stamped with a faint single character:
Outer
The system recognized it instantly.
[Grey Tower Outer Ring Registry Fragment (partial)][Value: High]
Good.
The second route deal was done.
The light in Lin Wu's eyes sharpened all the way.
Not because she had won.
Because she had just confirmed something even more important—
Grey Tower could bargain.
It simply took someone willing to stand at the threshold and bargain with it.
She had just reached out to pocket the registry fragment when Zhou Xubai's voice came through the comm again.
This time it wasn't cold command.
It sounded more like the last layer of restraint had finally worn thin.
"Lin Wu."
"What exactly are you trying to turn this store into?"
Everyone in the room looked at her.
Even Qi Ye was waiting for her answer.
Lin Wu stood beneath the light, the fragment of Grey Tower's Outer Ring registry between her fingers. Behind her was no longer just a convenience store.
It now had back-door shelves, a special cabinet, a registration plaque, and an entire structure of rules growing inside it.
She looked outside.
Then beyond the door.
Then finally down at the ledger in front of her—
pages dense with lines that looked less and less like store accounts and more like the operating logic of something new.
Then she smiled.
"What am I turning it into?"
She raised her eyes, calm and sharp.
"A place both sides have to line up for."
At the exact moment the words left her mouth, a new line surfaced at the top of the system screen.
[Store development path preliminarily established][Current title: Threshold Shop (Prototype)]
Good.
Now even the system agreed.
But before she could look at it for more than a second, a deep impact rolled in from the north end of the street outside.
Far away.
Heavy.
Not infected.
Not a vehicle.
It sounded more like part of some massive structure behind the high-rises had just given way.
Zhou Qiming's face changed instantly.
"No…"
He looked up sharply toward the dark sky beyond the glass, and his voice broke.
"The White Tower perimeter—"
"It may be cracking this way."