Once divergence marking became optional, Hall used that word exactly as well as Black Reed had feared.
Not badly.
Not dishonestly.
Worse.
Responsibly.
That was always the harder pressure to resist.
If Hall had immediately begun demanding notes on every term, the village could have pushed back cleanly. If Gray Willow had tried to absorb the practice into town summaries, Elder Ren would have turned half the yard into a public lesson on administrative appetite. But Pei An kept the boundary. Shen Lu carried notices without added reach. No one overstepped openly.
Instead, the structure waited.
And because the divergence notes were genuinely useful, Black Reed began supplying them often enough that usefulness itself started trying to become habit.
Su Ke noticed it one evening while reviewing a routine weather entry.
Light rain.
No seam change.
Drain delay mild.
South route slick by dusk.
One child slipped carrying kindling, no injury.
Split sleeping unchanged.
Two adults paused near the old lane line but did not gather.
Ordinary.
Manageable.
Not worth a second thought a few months ago.
Now, before he had even finished the line, part of his mind had already begun sorting:
Would Hall call this stable?
Would stable hide accumulation?
Would "no injury" erase increased child burden?
Would "unchanged" conceal unresolved cost?
He stopped writing.
His mother, trimming greens nearby, looked up at once.
"What?"
"I started doing it before deciding whether it mattered."
"Doing what?"
"Divergence marking."
He looked down at the half-finished entry.
"I didn't even think. I just started translating the danger in the wording."
She sat very still for a moment.
Then:
"Yes."
Not comfort.
Recognition.
Jian, repairing a cracked tool handle under the eave, said, "That's the real threshold."
Su Ke frowned.
"What is?"
His father looked at the plank.
"When the work stops arriving as request and starts rebuilding your attention from inside."
There it was.
That was why it felt wrong.
Not because the divergence notes were false or useless.
Because they were beginning to turn Black Reed's own noticing into a standing interpretive service before anyone had said the village agreed to live that way.
His mother said, "Then we need another rule."
Of course they did.
The evening gathering came quickly after that.
No crisis.
No rider.
No new distortion from Hall.
Just the village recognizing in time that a useful practice was starting to naturalize itself.
The plank lay open in Jian's yard.
Not only current cycle notes, but the newer sections on comparative revision and divergence marking too. Bo Lin was there, naturally, and looked almost pleased that Black Reed had found another subtle form of administrative danger before it ripened fully.
"You're becoming impossible in increasingly sophisticated ways," he said.
His mother did not bother to answer him.
Instead she looked around the yard and said, "The divergence notes cannot become routine."
Silence.
Then Elder Ren nodded once.
"Yes."
He Jun's wife asked, "Why not, if they help?"
His mother answered carefully.
"Because if they become routine, then Hall stops receiving them as cost and starts receiving them as normal record quality."
A pause.
"And the moment that happens, we're no longer choosing when to do extra interpretive labor."
She glanced at Su Ke.
"We're simply doing it."
That landed cleanly.
Jian added, "Optional only remains real if the option is visible in use."
A pause.
"If every summary includes divergence notes, then 'optional' has already died whether Hall says so or not."
Yes.
That was the law beneath the law.
Bo Lin said, more serious now, "And once optional labor becomes expected quality, no one remembers to price it."
Exactly.
So they built the new rule.
Divergence marking would not accompany every report.
It would be used only when:
1) a term risked near-term practical harm,
2) a category change could affect future restriction or burden reading,
or
3) a wording trap had newly appeared and needed early interruption.
Not for repetition alone.
Not because Black Reed could.
Not because Hall would likely benefit.
Only when the divergence mattered enough to justify the labor and the precedent.
Su Ke wrote it down slowly.
Divergence marking is reserved, not routine.
It will be used selectively where language creates immediate or cumulative risk beyond ordinary record burden.
He read it aloud.
Elder Ren said, "Good."
Then:
"Add that silence on a term does not imply agreement."
His mother nodded immediately.
"Yes."
Of course.
Because once selective use existed, absence itself could be misread.
So Su Ke added:
Absence of divergence note should not be read as local endorsement of all terminology.
Ugly.
Necessary.
Exactly the kind of sentence their lives now required.
The next test came sooner than expected.
Gray Willow sent a summary draft back for local verification before passing it onward through its own administrative stream. That alone was suspiciously polite. Shen Lu's hand was visible in it somewhere, almost certainly forcing the draft into village sight before it hardened.
The summary itself was not terrible.
That made it dangerous.
It described Black Reed's current condition as:
stable under managed adaptation;
household redistribution ongoing;
weather-sensitive route adjustment functional;
no urgent structural deterioration observed.
Su Ke felt the whole yard tense as Jian read the phrases aloud.
Managed adaptation.
Functional.
Ongoing.
No urgent deterioration.
Each line was technically defensible.
Each line also carried that smooth administrative quality that could, if left alone, begin cooling visible cost into something procedures could live with comfortably.
He Jun's wife spoke first.
"I hate all of it."
Reasonable.
His mother said, "Yes."
Then:
"Not because each word is false."
A glance around the yard.
"Because together they make the village sound easier to carry than it is."
There.
Exactly.
This was the perfect test of the new rule.
Did this summary justify divergence marking?
Or was Black Reed now only reacting because it had grown too sensitive to every smooth phrase?
The discussion ran long.
"Stable under managed adaptation" —
Did stable refer to the node or the settlement?
If both, then no.
If only the node, perhaps.
But the summary did not specify.
"Household redistribution ongoing" —
Technically true.
Also bloodless enough to erase forced carry extension, split sleeping, and repeated labor concentration.
"Weather-sensitive route adjustment functional" —
True in the narrowest sense.
Also close to praise for burden absorption.
"No urgent structural deterioration observed" —
Fine as site condition.
Potentially misleading if allowed to overshadow cumulative household and route strain.
Bo Lin said, "The first and third need cutting."
His mother replied, "Not cutting. Splitting."
Good distinction.
By the end of the argument, they chose to mark only two divergences.
Not all four.
That mattered.
For the first:
"stable under managed adaptation" risks merging node stability with unresolved settlement burden.
Suggested distinction: node-line currently stable under present support; settlement burden remains cumulative and unresolved.
For the third:
"weather-sensitive route adjustment functional" risks treating forced repeated use as low-cost success.
Suggested distinction: current route adjustment remains usable under present weather but continues to shift burden and labor.
They left the second and fourth unmarked.
Not because they loved them.
Because under the new rule, the labor had to stay selective or the boundary would rot.
When Su Ke read the final response aloud, the yard felt steadier.
His father nodded.
"That's right."
He Jun's wife frowned slightly.
"I still hate 'household redistribution.'"
"So do I," said his mother.
"But not every bad phrase earns the same work every time."
A pause.
"If we mark everything, they stop seeing where the danger is thickest."
Yes.
That was hard.
And right.
Selective correction required tolerance for some ugliness left standing.
Not all of it was equally costly to challenge in every moment.
Another brutal lesson.
Another necessary one.
Pei An's reply, when it came, was brief and almost dry in tone.
Gray Willow's verification draft had been corrected appropriately.
Hall accepted the distinction between node stability and unresolved settlement burden.
Route adjustment wording would also be changed.
No further divergence annotation was required on the other phrases.
No praise.
Good.
Too much praise would have fed the wrong habit.
Instead the note ended with one line:
Selective correction preserves force better than universal objection.
Su Ke read that twice.
Then his mother held out her hand for the note, read it once, and said, "Good."
A pause.
"At least someone up there is still learning."
Elder Ren, when told, said, "Or remembering."
Which might have been kinder than he intended.
The line went into the record under divergence use:
Hall acknowledges selective correction as stronger than universal objection.
That mattered.
Because if Hall itself began treating restraint as part of the method, Black Reed's boundary might hold longer before usefulness tried to digest it.
Stone Flank and Ash Hollow entered this chapter too, as they increasingly seemed to enter all chapters now whether present or not.
A later Hall comparative fragment mentioned that Stone Flank had refused to annotate every misuse of "intermittent access," marking only the version tied to seasonal labor assumptions. Ash Hollow, similarly, had let one summary stand but sharply corrected another that described ridge-shelter movement as "light domestic redistribution."
The yard approved at once.
Stone Flank was learning selectivity.
Ash Hollow too.
Su Ke felt an odd kind of relief at that.
Not because he had feared they were foolish.
Because it meant the other villages were reaching the same conclusion by their own roads:
if every injury in language received the same answer, then language itself would start setting the village's work schedule.
That could not be allowed.
He added the fragments carefully:
Stone Flank reportedly marking only labor-relevant misuse, not every access phrasing.
Ash Hollow reportedly distinguishing between tolerable rough summary and wording that obscures route-loss cost.
His father read the lines and said, "Good."
Then:
"Keep 'reportedly.'"
Always.
The record had learned discipline the hard way.
Late that week, under a clear evening sky that made the lower lane seem almost innocent if one were foolish enough to trust appearances, Su Ke sat alone with the planks and reread the newer sections.
Method.
Trade.
Comparison.
Naming.
Divergence.
Selective correction.
The record had become not just a record of events, but of thresholds:
what could be tolerated,
what had to be interrupted,
what could not be allowed to naturalize.
That was different from the beginning.
He felt it clearly now.
At first the work had been about making the village legible.
Then it became about preventing others from simplifying that legibility.
Now it was also about deciding which forms of response must never become ordinary, even when useful.
His mother came to stand near him and, after a moment, said, "You look less angry than when this started."
He considered.
"More tired maybe."
"That too."
A pause.
"But less angry."
He looked at the open plank.
"I think I know the shape better now."
She nodded once.
"That often costs anger."
Then, after a beat:
"If you're lucky, it leaves judgment."
He almost smiled.
"That sounds like something Elder Ren would say if he wanted to ruin a child's evening."
"No," she said.
"He'd say it meaner."
Fair.
After she went back inside, he took out the hidden set and added one more line:
Some useful acts must stay exceptional or they become unpaid structure.
He read it twice.
Then, beneath it:
What cannot be made routine must be defended before it feels routine.
That one felt right enough to keep at once.
Outside, Black Reed settled into night.
The burdened household remained divided.
The south route remained worn but usable.
The drain remained itself.
The lower-lane cover held.
The preservation node below stayed sealed and old and indifferent to the labor its existence kept generating above.
But in the yard, in the wrapped planks, in the habits of attention now guarded almost as carefully as the lane itself, the village had learned something subtle and vital:
not every helpful response should be allowed to become part of the standard shape of being heard.
Some things had to remain marked as extra,
as chosen,
as costly,
or they would be swallowed by routine and returned later as expectation.
And Black Reed, having already paid too much for other people's improved hearing, had no intention of letting that happen quietly.