"The folds talk to each other," Shen said, and Latch's hands went still on the wall.
They were in the lattice section. Shen sitting against the wall in his characteristic posture, legs crossed, hands folded, the ancient cultivation signature holding its layered strata in the corridor's bioluminescence. Latch on the opposite wall, reading the junction's biological output. Yun Mei at the far end, running her final verification of the targeted reading protocol. Wei Long between them, the Crown's substrate at thirty-seven-point-four percent, the micro-lattice sitting at two-point-seven-five percent of processing capacity like a passenger on a train that was approaching its destination.
"Define talk," Latch said.
"The fold organisms are a network. They are not isolated biological units connected by inert infrastructure. They are communicating entities sharing biological data through the bridge's architecture." Shen's voice carried the patience of someone stating an obvious fact to people who hadn't had twenty-four centuries to learn it. "The communicative-band transmissions that you identified, the garbled message the junction fold sends through the substrate, are not unidirectional. Every fold in the network transmits. The bridge carries those transmissions between nodes. The junction fold receives data from the other forty folds and includes that data in its own transmission to the bearer."
"The garbled message is a relay." Latch's hands pressed flat against the tissue. The elder reading the fold's biological output with new understanding, parsing the signal he'd been studying for weeks through a framework that changed what the signal contained. "The junction fold isn't just broadcasting its own condition. It's broadcasting the network."
"The junction fold is the primary node. The hub. It receives transmissions from all connected nodes and aggregates them into a single data stream that the bearer's Crown can process. In a functional network with a healthy bridge, the aggregated transmission would arrive at the Crown's substrate as a clean, organized feed — each node's data tagged and sorted, the entire network's status available at a glance."
"But the bridge is degraded. The lattice fragments the transmissions. The aggregation arrives garbled."
"The aggregation arrives garbled. The individual node transmissions are broken into pieces by the lattice interference. The junction fold assembles what it can and transmits the result, but the result is disordered. Mixed. Node data from the seventeen-percent fold jumbled with data from the three-percent fold jumbled with data from every other node in the network." Shen opened his eyes. "You have been reading the aggregate. You need to read the individual transmissions."
"Can they be separated?"
"Each node's transmission carries a biological signature specific to that organism. The fold's equivalent of a voice. No two folds transmit at the same biological frequency. If you can isolate the frequency signature of the seventeen-percent fold's transmission from the aggregate, you can extract that node's data from the garbled stream."
Latch looked at Shen. The elder's three thousand years of biological expertise meeting the custodian's twenty-four hundred years of network observation across a corridor lit by an organism's bioluminescence.
"You know the frequency signatures."
"I know the frequency signatures of all forty-one nodes. I have been receiving their transmissions through the secondary network for twenty-four centuries."
---
The filtering process took four hours.
Latch and Shen worked side by side on the wall, the elder's bond reading the fold's biological output while the ancient custodian guided him through the frequency isolation. It was not a clean collaboration. Shen's understanding of the network's communication was dimensional — he perceived the transmissions as resonance patterns in the secondary network's substrate, abstract frequencies mapped against abstract coordinates. Latch's understanding was biological — he perceived the same data as tissue health, cellular activity, organic signals with organic meaning.
They spent the first hour arguing about terminology. Shen used words that hadn't been current in Latch's dialect for eight hundred years. Latch used biological concepts that Shen treated as imprecise approximations of dimensional physics that could be described more accurately in mathematics.
Yun Mei listened to the argument for twenty minutes, then walked over and drew a translation diagram on the last page of her notebook. Two columns: Shen's terms on the left, Latch's terms on the right, connecting lines showing equivalence. She stuck the notebook to the wall with a piece of tissue adhesive that the fold helpfully secreted when she pressed the paper against it.
The argument stopped. The work began.
By the second hour, Latch could identify individual node signatures in the aggregate transmission. The fold's garbled message resolved into overlapping signals, each one carrying the biological fingerprint of its source organism. Most were faint. The weaker nodes transmitted weaker signals. The healthier nodes came through stronger, their biological voices carrying through the lattice interference with more surviving coherence.
The seventeen-percent fold's transmission was present but thin. The organism's declining health translated directly to declining signal strength. The transmission arrived at the junction fold in fragments — biological data broken by lattice interference, reassembled imperfectly, the distant fold's voice speaking through a throat full of crystal.
"I have it," Latch said at the three-hour mark. His hands flat on the wall, his bond tuned to the specific frequency signature that Shen had identified as Node Seventeen's biological voice. "The transmission is fragmentary. I'm receiving approximately thirty percent of the data the fold is broadcasting. The rest is lost to lattice degradation."
"What's in the thirty percent?"
"Biological status data. The fold's health index — consistent with our fifteen-point-four percent reading. Tissue condition. Metabolic rate. Structural integrity assessments." Latch read deeper, his fingers pressing into the warm tissue with the concentrated attention of a physician listening for a heartbeat through a thick wall. "And architectural data. The fold is transmitting its own internal dimensions."
"Internal dimensions."
"The fold's interior volume. The distance from the bridge access point to the major biological structures. The relative positions of the organism's functional organs — metabolic processors, waste channels, structural supports, boundary tissue." Latch's voice was changing. Not louder. More focused. The biological precision giving way to something rawer, the elder parsing data that was being transmitted by a living organism in distress, an organism that was broadcasting its condition the way a patient described symptoms — imperfectly, urgently, with the desperate thoroughness of a body that knew something was wrong. "The boundary tissue. I have a position reference. The fold is transmitting the distance from the interior access point to the boundary layer."
"How far?"
"Approximately forty meters through the fold's internal architecture. Not a straight line. The fold's interior is not hollow. It's structured. Biological organs between the access point and the boundary, arranged in a configuration that the transmission describes in terms I need time to interpret."
"We don't have time to interpret. We have three days." Wei Long moved to the wall beside Latch. He couldn't read the transmission directly — the Crown's substrate and the lattice created the feedback risk — but the Crown's dimensional awareness could perceive the fold's biological output as a general pattern. A shape, not data. "Can you map the route from the access point to the boundary tissue? A navigation path through the internal architecture?"
"I can map the landmarks. The fold's transmission includes position data for its major biological structures. If I can identify which structures are between the access point and the boundary, I can plot a route that navigates around or through them." Latch's hands moved on the wall, tracing the transmission data the way a cartographer traced coastlines. "The fold's metabolic processor is the largest internal structure. It occupies approximately thirty percent of the interior volume, positioned centrally. The structural supports radiate outward from the metabolic processor to the boundary tissue. The waste channels run between the supports."
"Can I travel through the waste channels?"
Latch paused. Shen answered.
"The waste channels in a healthy fold are large enough for physical passage. They carry biological waste products from the metabolic processor to the boundary tissue for expulsion. In a healthy fold, they're approximately two meters in diameter." The custodian's eyes were closed. His hands on the wall, reading through the secondary network's passive reception. "In a fold at fifteen percent health, the waste channels may be constricted. The organism's biology contracts when health declines. The channels narrow."
"How narrow?"
"I don't know. The secondary network doesn't resolve interior architectural details at that level. The fold's own transmission might contain diameter data for the waste channels, but Latch is receiving only thirty percent of the broadcast. The specific measurement may be in the missing seventy percent."
Latch read for another hour. The transmission data arriving in fragments, each fragment containing a piece of the seventeen-percent fold's internal architecture, each piece adding detail to a map that was building itself puzzle-piece by puzzle-piece from the voice of a dying organism speaking through a broken channel.
---
At the four-hour mark, Latch pulled his hands from the wall and sat down. His hands were shaking again. Not from the lattice reading this time. From the effort of parsing a fragmentary biological signal for four hours straight, tuning his bond to a specific frequency that required constant concentration to maintain, reading data through lattice interference that garbled every third word.
"The map is incomplete," he said. "But it's enough for navigation."
He described what the fold's transmission had revealed. The seventeen-percent fold's interior architecture was roughly spherical, forty meters from the bridge access point to the boundary tissue at its closest surface. The metabolic processor occupied the center. Six structural supports radiated outward from the processor to the boundary, dividing the interior into six sections like the segments of an orange. The waste channels ran between the supports, spiraling outward from the processor to the boundary in a helical pattern.
The bridge access point was at the top of the sphere. The wellspring was at the bottom. The maximum distance through the interior, following the waste channels' helical path.
"That's the worst possible position," Yue said through the bond.
"The wellspring was placed at the farthest point from the bridge access to minimize the wellspring's dimensional signature at the bridge connection," Shen said. "The previous bearer chose the location for stealth. The trade-off is navigation distance."
"What about the wellspring itself?" Wei Long asked. "The channel through the boundary tissue."
Latch's hands returned to the wall. A brief reading, targeted, the elder pulling the last fragments of wellspring-specific data from the fold's transmission.
"The wellspring is not what I expected." His voice was careful. "The fold's transmission includes boundary tissue data for the area around the wellspring. The data shows — the channel is larger than it should be."
"Larger?"
"The previous bearer's wellspring was designed as a narrow valve. A controlled opening in the boundary tissue, self-regulating, producing a steady stream of excess dimensional energy. The fold's transmission describes a channel that is significantly wider than a self-regulating valve. The boundary tissue around the channel shows signs of mechanical stress. Stretching. Tearing. The tissue has been forced open beyond its design parameters."
"Liu Chen's extraction."
"Liu Chen's pulse concentrator applies force to the wellspring's output. Each pulse cycle pulls energy through the channel with more force than the channel was designed to handle. Over eight months of concentrated extraction, the pulses have widened the channel. The boundary tissue around the wellspring has been physically damaged by the repeated force of the extraction process." Latch pulled his hands from the wall. "The wellspring is no longer a valve. It's a wound. Liu Chen turned a pressure release into a drain, and the drain has torn the organism's boundary tissue."
The corridor was quiet. The fold's heartbeat. The bioluminescence cycling. A living organism forty kilometers away, broadcasting its condition through a garbled channel, telling anyone who could hear that something was pulling it apart from the outside.
"The wound complicates the reshaping," Shen said. His voice was toneless. The custodian who had watched this happen, who had calculated the acceptable cost, who had decided that one node's suffering was worth the network's concealment. "The previous bearer reshaped healthy boundary tissue to create the wellspring. The tissue around the wellspring is no longer healthy. Reshaping damaged tissue requires more precision than reshaping intact tissue."
"More precision at fourteen percent processing."
"More precision at fourteen percent processing. Yes."
"Can it be done?"
Shen didn't answer immediately. He read the wall for a long time. The ancient custodian's bond reaching through the secondary network to the distant fold, assessing the damage through whatever dimensional physics his twenty-four-century monitoring provided.
"The tissue is damaged, not dead. The fold's biology is still active at the wound site. The cellular structure is stretched and stressed but functional. If the Crown can interface with the damaged tissue and provide structural support during the reshaping — biological reinforcement to prevent the tissue from tearing further as the channel narrows — then the modification is possible."
"At fourteen percent?"
"At fourteen percent, with communicative-band energy for biological support, the interface resolution should be sufficient for basic tissue reinforcement. The reshaping itself needs to be slow. Gradual. Not the quick modification the previous bearer performed on healthy tissue. A careful, staged reduction of the channel diameter over — I don't know. An hour. Perhaps two."
"Two hours inside the fold at fourteen percent processing, navigating an unfamiliar interior, reshaping damaged boundary tissue while Liu Chen's pulse concentrator keeps pulling on the other side of the wound."
"Yes."
Wei Long pressed his hand against the junction wall. The fold's heartbeat. The network's forty-one nodes in his awareness, including the one forty kilometers away that was broadcasting its pain in fragments through a bridge full of crystal.
"Map the waste channels," he told Latch. "Every landmark the transmission provides. I need to know the path from the access point to the boundary before I travel it."
Latch nodded. His hands went back to the wall. The elder's bond reaching for the distant fold's garbled voice, filtering the signal through Shen's frequency isolation, pulling architectural data from a thirty-percent fragment of a biological broadcast that was the only guide Wei Long would have when he entered an organism he'd never visited to repair a wound he'd never seen.
The fold's heartbeat pulsed against his palm. Fifty per minute. Steady. The junction fold carrying on, relaying the network's voices, aggregating the transmissions of forty living organisms into a single garbled stream that nobody had known how to read until an ancient custodian walked out of twenty-four centuries of solitude and told them the folds were talking.
They'd been talking the whole time. Everybody just needed to learn how to listen.
