Latch and Yun Mei started arguing within the first ten minutes.
Wei Long heard it through the substrate — not the words themselves, but the vibrations of two people pressing their hands against the same section of wall and disagreeing about what they found there. Latch's bond read the biological data as a physician would: tissue composition, energy flow, structural integrity. Yun Mei's training read the same data as a physicist would: dimensional resonance patterns, crystallographic alignment, wave propagation vectors.
They were reading the same lattice. They were seeing different things. And neither of them was wrong.
"The encoding in the third layer uses a compression pattern consistent with substrate overflow," Yun Mei said. Her voice carried down the corridor, clipped and precise. "The Crown was processing more data than the lattice could record at native resolution, so it compressed. Standard dimensional data handling."
"The compression is biological, not mechanical." Latch's response was quieter. Certain. "The substrate is organic tissue. When organic tissue stores information under stress, it doesn't compress — it prioritizes. The third layer doesn't contain compressed data. It contains selected data. The Crown chose what to record."
"That assumes the Crown has volition."
"That assumes the bearer had volition. Which they did."
Silence. Then the scratch of Yun Mei's pen in her notebook.
Wei Long left them to it.
---
The morning integration session ran clean. Thirty-two-point-three percent at the start, the Crown's substrate humming with the steady efficiency that had become normal at this capacity range. He pressed his hands to the junction wall and let the fold's biological support cradle the process — the organism's investment in its bearer had grown more sophisticated over the past week, the mutualistic relationship producing returns that both parties could measure.
"Twenty. Twenty-four. Twenty-seven."
Yue's count was routine now. The neural load climbed in predictable increments, the substrate's capacity expanding with each session the way a muscle grew under controlled stress. The rib didn't protest. The fold's biological repair had closed the reaggravation to a dull memory, the bone knitting at a rate that would have taken weeks through normal healing.
"Thirty. Thirty-one-point-six peak. Holding."
He held. The Crown's architecture settling into the new capacity like water finding its level. Thirty-two-point-five when Yue closed the count.
Half a percent. Consistent. The exponential curve that Chen Bai tracked daily, the mathematics of biological growth that didn't care about deadlines or threats or the ancient entity hunting through the deep boundary for the signal this very process was generating.
"Conduit," Wei Long said.
The pathway to the eleven-percent fold opened on the first attempt. Clean. The watcher's maintenance energy channeled through the bridge with the precision of infrastructure doing what it was built for, the guardian's output flowing through the Crown's substrate to the distant node where a dying organism was learning to live again.
Wei Long held the channel for fifty-five seconds — five seconds longer than yesterday, the additional capacity making the extension comfortable rather than strained. The neural load peaked at thirty-seven, well within the safety margin that Yue and Latch had established through two weeks of parameter refinement.
Clean disconnect. He pulled his hands from the wall.
And stopped.
Something in the network had changed.
Not the eleven-percent fold. That node's recovery continued on trajectory — Latch would confirm the numbers later, but the conduit's output felt right, the biological systems at the distant node responding to maintenance with the slow enthusiasm of a patient learning to eat again.
Something else. Farther away. In the topology between the eleven-percent fold and the junction, along the bridge's conduit pathway where the network's architecture connected forty-one nodes in a web of living tissue and dimensional physics.
The fourteen-percent fold.
"Wei Long." Yue's voice was careful. The bond carrying her awareness of what he was sensing before she put words to it. "The fourteen-percent node. I'm reading it through the bond."
"What are you reading?"
"Resistance. The pathway from the bridge to that node is registering increased impedance. Not much. Point-two to point-three percent above yesterday's baseline." She paused. "The fold's heartbeat at that node is unchanged. Fifty-two per minute. The organism's biology is stable. It's the pathway itself that's changed."
"Latch." Wei Long raised his voice toward the corridor where the elder was still working with Yun Mei. "I need you on the network."
The elder's hands left the lattice section and found a different wall. Reading. Three thousand years of biological expertise parsing network data that had been routine yesterday and wasn't anymore.
"Confirm the fourteen-percent fold's pathway impedance."
"Confirmed." Latch's voice went flat. Not calm — controlled. The control of a physician finding something unexpected during a routine examination. "The impedance increase is localized. Not along the entire pathway from the bridge to the node. Concentrated at the node itself. At the node's boundary."
"What's causing it?"
Latch read for a long time. His hands pressed flat against the tissue, the elder's bond reaching through the network to the distant fold where the fourteen-percent node sat in the topology like a moderately healthy organ that should have been stable.
"Lattice."
The word sat in the corridor like something dropped.
"The lattice fragments in the fourteen-percent fold's architecture," Latch said. "They're larger than they were during the last comprehensive scan."
"Larger."
"Not by much. The fragments I documented six days ago at that node measured within a consistent range. The fragments I'm reading now exceed that range by eight to twelve percent." Latch pulled one hand from the wall. Put it back. "The lattice fragments in the fourteen-percent fold are growing."
---
Chen Bai's pen stopped when Latch finished his report.
"Growing," the analyst repeated through the relay. "The lattice fragments are not static remnants. They're active biological structures continuing to propagate twenty-four centuries after the bearer who created them died."
"Died or was consumed. The distinction may matter." Latch's hands were still on the wall. "The lattice was created by the Crown's altered architecture during the previous bearer's final months. The bearer was consumed, but the Crown's architecture survived the consumption. The lattice is Crown-derived material. If the Crown's architecture embedded self-propagating instructions into the lattice during the growth period—"
"Then the lattice doesn't need a bearer to continue growing." Chen Bai's pen resumed. Fast. "The lattice is an autonomous process. Slow. Incredibly slow — twenty-four centuries and the fragments haven't consumed the network. But persistent."
"Why the fourteen-percent fold?" Wei Long asked. "Why not the others? Why not this junction?"
"Variable conditions." Latch read the distant node's data again. "The lattice fragments in each node exist in different biological environments. Different fold health levels, different tissue conditions, different local energy profiles. The fourteen-percent fold's biology may provide conditions more favorable to lattice propagation than the other nodes. Or—" He paused. "—or the lattice growth was always occurring at variable rates across the network, and the fourteen-percent fold is simply the first node where the growth has reached a threshold I can detect."
"Check the other nodes."
"That requires individual readings on all forty-one nodes. At current capacity, I can read approximately six nodes per hour with sufficient resolution to detect lattice growth at this scale."
"How long for all forty-one?"
"Seven hours."
Wei Long pressed his palm against the wall. The fold's heartbeat. Steady. Unconcerned. The organism that had been investing in his recovery, healing his rib, supporting his integration, nurturing the mutualistic relationship that both Crown and fold benefited from — that organism existed inside a network where the previous bearer's final act was still slowly eating the infrastructure.
"Start with the critical nodes," he said. "The three percent, the eleven, the seventeen."
Latch was already moving.
---
Yun Mei found him in the corridor two hours later.
"Latch told me." She didn't sit. Her arms crossed, the notebooks under one arm, the researcher's posture carrying the particular tension of someone whose research timeline had just been compressed. "The lattice is autonomous. Self-propagating. Growing faster in some nodes than others based on local conditions."
"Yes."
"And the reading project — the twelve-day deadline to map the encoding before we reach clearance capacity — that deadline just became a ceiling, not a target." She shifted the notebooks. "If the lattice is growing, then every day we spend learning to read the record is a day the record gets harder to read. More lattice material means more encoding complexity. More layers. More data to parse before clearance."
"And more nodes at risk."
"And more nodes at risk." She opened the top notebook. Blue ink. Her original crystallographic analysis, the work that had mapped seventeen distinct layer types in the lattice's sedimentary structure. "The growth pattern I'm seeing in the fourteen-percent fold's data is consistent with what I'd expect from a self-propagating crystalline structure in a biologically active medium. The lattice uses the fold's own biology as raw material. It converts the organism's tissue into crystalline structure the way a coral builds a reef from dissolved calcium."
"The fold is feeding the thing that's killing it."
"The fold doesn't recognize the lattice as hostile. The lattice is Crown-derived. The fold's biology treats the Crown's architecture as mutualistic — part of the symbiotic relationship. The fold's immune response doesn't target Crown-derived material." She closed the notebook. "The previous bearer's altered Crown created a parasite that the host organism can't fight because it looks like the host's own partner."
The corridor was quiet except for the heartbeat. The fold's biological rhythm, the organism's steady pulse carrying its garbled message through a substrate that was being slowly converted into the very crystal that blocked the message from being heard.
"How does this change the mapping timeline?" Wei Long asked.
"It doesn't. It changes the priority." Yun Mei's voice was the controlled precision of a scientist recalculating variables under pressure. "The mapping was important because we needed to read the record before clearance destroyed it. Now the mapping is urgent because the record is growing. New layers are being deposited. The lattice isn't just a twenty-four-century-old book — it's a book that's still being written. And the new pages may be overwriting the old ones."
"Overwriting."
"The new growth layers in the fourteen-percent fold don't contain twenty-four-century-old topology data. They contain current data. The fold's biology as it is now. The network's condition as it is now. The lattice is recording the present the same way it recorded the past, and the new recordings are being deposited on top of the old ones." She met his eyes. "The pre-corruption topology that Latch identified — the deep boundary map from before the Spirit Tyrant reached those other networks — that data is in the older layers. The layers being buried under new growth."
"How fast?"
"At the current growth rate in the fourteen-percent fold? The older layers become inaccessible in approximately—" She did the math in her head. Her lips moved. "—three to four weeks. After that, the new growth layers are thick enough that reading through them to the historical data becomes exponentially more difficult."
Three to four weeks. The convergence window that Chen Bai had calculated for all threats arriving simultaneously was six to eight weeks. The lattice record would be lost before the other crises peaked.
"Chen Bai."
"I heard." The relay carried the sound of a pen moving at speed. "The timeline compression changes the strategic calculus. The lattice reading must happen before the historical data is buried by new growth. Three to four weeks at current rates. The Crown reaches forty percent in twelve to fourteen days. That gives us a window of approximately one to two weeks after reaching reading capacity to actually complete the reading before the data is lost."
"One to two weeks to read a twenty-four-century record."
"One to two weeks to read the strategically relevant portions. Not the entire record." Chen Bai's pen stopped. "We need to know what we're looking for before we start reading. Which means the encoding map that Latch and Yun Mei are building isn't just preparation — it's triage. They need to identify which layers contain the pre-corruption network topology and build a reading protocol that targets those layers first."
"Can you do that?" Wei Long asked Yun Mei.
She was already walking back toward the lattice section. "Latch and I will argue about methodology for another hour. Then we'll agree on something that works for both biological and crystallographic reading. Then we'll start the triage mapping." She paused at the corridor junction. "Twelve days was comfortable. This isn't comfortable. But the data is there. The question is whether we're fast enough."
She left.
The fold's heartbeat. The corridor. The watcher at the perimeter, monitoring for the Spirit Tyrant's approach. The eleven-percent fold recovering at its careful pace. The seventeen-percent fold bleeding energy into Liu Chen's stolen spirits. And now the fourteen-percent fold, its architecture slowly crystallizing under the weight of a dead bearer's final creation, a parasite dressed in the Crown's own biology.
"The lattice isn't passive," Yue said. The bond carrying her understanding ahead of the words. "We've been treating it as a twenty-four-century-old obstacle. A wall to clear when we're strong enough. But it's alive. Growing. Recording. And if it's growing in the fourteen-percent fold, it's growing everywhere. Just slower. Just quieter."
"Latch will have the node survey by tonight."
"And if the survey shows growth in all forty-one nodes?"
Wei Long pressed his hand against the wall. The fold's warm tissue. The heartbeat. The garbled message underneath, the organism speaking through interference that was getting thicker by the day.
"Then we stop treating the lattice as a library and start treating it as a disease."
Yue was quiet for a while. The bond carrying the weight of the metaphor — a disease that was also a record, a parasite that was also a gift, an architecture of death that contained the only map of a world that no longer existed.
"Latch is right about one thing," she said. "The previous bearer shaped this. They chose what the lattice recorded. They spent their final months encoding intelligence into a structure they knew would survive them."
"They also created something that's still eating the network they died to protect."
"Both things are true."
Both things were true. The previous bearer's gift and the previous bearer's curse, growing together in the same crystal, layer by layer, day by day, in forty-one nodes scattered through the deep boundary.
From down the corridor, the sound of Latch and Yun Mei's argument resumed. Something about compression ratios and biological prioritization protocols. The elder's quiet certainty meeting the researcher's clipped precision, two incompatible methodologies grinding against each other toward something that might, if they were fast enough, save a record that was eating itself alive.
Wei Long closed his eyes. The Crown at thirty-two-point-five percent. The lattice growing. The record fading. The window shrinking.
Twelve days to reach forty percent. Three to four weeks before the historical data was buried. One to two weeks after that to read what mattered.
The math worked. Barely.
It always barely worked.
