The moment the signal broke free of Earth's atmosphere, there was no sound, no trail of light. It fell like a drop of water into the boundless dark sea, spreading silently. It passed through the ionosphere, skimmed past the geosynchronous orbit monitoring stations, crossed the energy fluctuation zone once tracked by Cheng Ye's convoy, and was finally caught gently by a silent gravitational field just outside Mars' orbit.
It was a suspended crystal array floating in the void, its surface rippling with aurora-like waves. At the center of the array, a translucent light cluster rotated slowly, receiving pulses in perfect sync with the end of Lin Wanqiu's live broadcast.
Signal Source Locked: Earth, 40.3° N, 93.7° E
Signal Type: Composite Compressed Stream (Audio + Visual Frames)
Initial Decoding Progress: 17%
Primary Keywords: Wood, Connection, Interlocking, No Nails Used
The light cluster paused for one second, then split into three branching beams, each shooting toward a distant cluster of cubic structures. There were no alarms, no emergency broadcasts, but every quantum node on the entire platform elevated its computing priority within the same millisecond. Flowing data chains emerged across walls, floors, and ceilings—as if blood vessels had suddenly been injected with active matter.
The main analysis hall lay at the platform's core, its honeycomb dome unfolding. Every hexagonal panel displayed real-time decoding progress across different dimensions. At the center hovered a repeating video clip: Lin Wanqiu's hands disassembling a dovetail joint model, movements clear, angles precise.
"Seventh replay," a voice resonated—not through air, but as direct spatial vibration. "Observe the relationship between the bevel insertion angle and the force direction."
The speaker was a light cluster standing at the main console, slightly taller than the others, its interior pulsing with regular deep-blue light. It was the lead researcher of the Structure Simulation Group of the Luminous Civilization, codenamed Edge.
The screen instantly switched to a 3D model: a crossbeam locked into a column via a dovetail joint, with the system marking pressure distribution across the contact surface. Colors graded from blue to red, with the maximum stress point concentrated at the tenon root.
"Traditional fixation relies on external restraints," Edge's body projected holographic text. "Bolts, rivets, welds—all are destructive intrusions into the material itself."
Another nearby light cluster interjected: "And this structure… achieves self-locking purely through geometry?"
"Yes." Edge pulled up comparative data. "We tested seventeen known types of wood for tensile strength. Combined with the bevel ratio of this joint, it remained intact under 8.6 kilonewtons of lateral tension. More importantly—" it paused, "it allows micro-displacement."
"What did you say?" A vibration came from another direction.
"It allows deformation," Edge repeated. "It does not resist. It does not eliminate. It accommodates. This violates the Stability First Principle."
A brief silence fell over the hall. All light clusters dimmed by 0.3% simultaneously—the standard physiological response of the Luminous Civilization indicating deep contemplation.
"Initiate reverse derivation protocol," Edge ordered. "Reconstruct its design logic through human behavioral patterns."
The system executed at once. The screen switched to a close-up of Lin Wanqiu's face as she spoke. Her lip movements were analyzed frame by frame, paired with gesture trajectories and speech rate changes to generate a behavioral intent model.
Speech Segment Extraction Complete
Behavioral Intent Recognition In Progress…
Match Result: Teaching/Demonstration Behavior, Confidence 98.7%
"They are not showing off technology," a young researcher's light form trembled slightly. "They are teaching."
"Teaching a systematized method," Edge added. "This is not accidental discovery. It is standardized output from accumulated experience."
At that moment, the signal decoding team reported new progress: it had successfully isolated key sentences in the audio band. When Lin Wanqiu said, "If the error exceeds half a millimeter, the structure loosens," her speech rate dropped by 23%, and she paused for 1.8 seconds after "half a millimeter"—a detail marked as "emphatic rhythmic control."
"They are actively controlling information transmission efficiency," the decoding team leader's voice carried rare fluctuation. "This is not the cognitive level of a primitive civilization."
"Perhaps our definition of 'primitive' is wrong." Edge turned to the main screen and pulled up the full classification map of mortise-and-tenon structures. "Straight tenon, dovetail tenon, corner tenon… three basic types corresponding to three mechanical requirements. This is not fragmented experience. It is systematic structural wisdom."
Orders cascaded downward. The Energy Application Group accessed the data stream; the Material Modeling Group launched quantum simulation; even the Art Branch, usually focused on aesthetics, began retrieving image data to analyze whether carvings on the tenons contained hidden coding.
Twelve hours later, the first comprehensive report was generated.
The Material Modeling Group submitted a mathematical model: it incorporated the dovetail joint's bevel angle (approximately 75°), tenon width-to-thickness ratio (1:1.2), and wood fiber direction into calculations, simulating a high-frequency vibration environment. Results showed that under continuous disturbance of ±5mm amplitude and 12Hz frequency, the joint's integrity lasted 41% longer than metal connectors under identical conditions.
"Because it absorbs energy," the modeling leader explained. "Every tiny slide dissipates external force instead of resisting it. Like…" it searched for the word, "water flowing around a stone."
The Energy Application Group immediately followed with a proposal: could this "deformation stabilization mechanism" be mapped to photon confinement field design? Current energy solidification relied on high-intensity magnetic field confinement, which consumed massive power and was vulnerable to interference. If structural self-locking could achieve local condensation, it would revolutionize energy storage logic.
A preliminary verification experiment began. Researchers converted the dovetail joint's geometric parameters into a field strength distribution function and loaded it into a miniaturized photon trap. Three minutes later, monitoring data showed that an energy cluster that normally lasted only 0.3 seconds remained stable for 1.7 seconds under the new model.
"It works." The energy team leader's voice hit a peak fluctuation for the first time. "We have achieved local condensation without an external field."
The platform's computing load instantly surged to 89%. A new research project was automatically approved, named Feasibility Verification of Mortise-and-Tenon-Like Solidification Effect, marked Priority S-1.
But consensus did not exist.
In the high-level review hall, opposition emerged for the first time.
"We are treating a low-level civilization's handicraft as a theoretical breakthrough," an elder researcher's light form glowed cold white. "Their tech tree is stuck in the chemical combustion stage; they even rely on primitive rockets for orbital flight. And now we are restructuring our energy system because they can 'fit wood together'?"
"They do not need to understand relativity to create structures that follow cosmic laws," Edge replied. "That is the point. Their knowledge path is completely different from ours."
"Different does not mean advanced."
"Nor does it mean invalid." Edge pulled up the data. "In the past 72 hours, the effective modeling parameters we have obtained from this signal source have exceeded the total collected from all primitive civilizations in the previous 500 years. And—" it magnified the sound wave graph of her concluding line about "coexistence," "they expressed the highest law of system maintenance in two syllables."
The debate lasted four hours. Finally, the project director made a decision: retrieve the previous three public transmissions from the signal source for systematic evaluation.
Data was quickly compiled:
- First signal: Bamboo fiber molecular arrangement and bending resistance, with scanned illustrations from Tiangong Kaiwu;
- Second signal: Honeycomb hexagonal structure material efficiency, quoting Kaogong Ji from the Warring States Period;
- Third signal: Current mortise-and-tenon structural analysis.
Statistics showed all three transmissions centered on three themes: non-destructive connection, minimal resource use, and system resilience, with occurrence rates of 92%, 88%, and 100% respectively.
"This is not coincidence," the director declared. "This is a knowledge system with internal consistency."
The report was formally submitted to the Academy of Sciences decision-making layer, titled Preliminary Study on High-Dimensional Thinking Paradigms of Low-Level Civilizations, with full modeling data and simulation records attached.
Twenty-four hours later, the approval arrived.
The ARCH-07 Special Research Program was officially established.
Research Object Number: ARCH-07-CHN-001.
Classification Name: High-Dimensional Connection Paradigm of Primary Civilization.
Resource allocation authority was unlocked, interdisciplinary collaboration channels activated, and all related data encrypted to the highest level.
On the main platform, a new research block activated. Data streams on the walls accelerated visibly, like blood suddenly pumping faster. Every light cluster flickered at high frequency, transmitting unproven conjectures and testable hypotheses.
Edge stood before the central console, replaying the end of the broadcast one last time.
Lin Wanqiu said: "This isn't just a craft. It's a way of thinking about how to coexist, for a long time."
The frame froze on the moment she closed the stream, the mainframe's red standby light glowing.
"Coexistence," Edge whispered the word, its surface blooming with interwoven wood grain and hexagonal grids. "So you found the answer long ago."
It did not smile—light-based life could not. But it saved the sentence in its core database, marked as a Civilization Enlightenment-Level Concept, and set a permanent protection protocol.
Research accelerated. New simulations launched, attempting to extend mortise-and-tenon principles to nanoscale photon array construction. The energy team designed prototype devices, trying to achieve energy self-locking without external restraints. Even the sociology branch joined, analyzing whether human knowledge transmission methods such as "master-apprentice inheritance" and "mnemonic verses" held information fidelity advantages.
But no results were sent back.
No signals to Earth. No feedback pulses across stars.
Everything on Earth remained in the windy, sand-swept night.
Lin Wanqiu still slept in the small supply station room. The mainframe's red standby light glowed softly, like a sleepless eye in the dark.
Outside, the wind grew stronger. The metal roof trembled slightly. She rolled over and touched the notebook under her pillow, its edge pressing lightly against her hand. She did not open her eyes—she only pulled her hand out and rested it gently on the book.
And 23 light-years away, on the orbital platform, thousands of light clusters repeated calculations over a 43-second video. They no longer called it "primitive technology." They now used a single, unified name:
Earth Paradigm · I.