Silent Ark

Chapter 29: Eden, the Dark Forest?

Three days after Professor Chen Dunli left.

The fortress communication array received a response.

It is not noise, not a byproduct of frequency pollution, and not a spurious signal caused by instrument malfunction.

It is a response.

A well-structured response with zero error rate and clear protocol characteristics.

Shen Ruozhi discovered it while performing routine diagnostics on the communication array.

My fingers are still moving across the keyboard, but my thoughts have already wandered off somewhere else.

She couldn't remember what she was thinking about elsewhere.

All I remember is that a waveform I'd never seen before popped up in the bottom right corner of the screen.

The waveform is not random; it has rhythm and interludes, and it has start and end markers, like some kind of Morse code.

It took her four seconds to confirm.

「THERE IS PATTERN MIRROR AND RESPONSE BEACON REACHING YOU.」

Shen Ruozhi stared at this line of text for a long time.

It's not that it's hard to understand.

On the contrary, it is too easy to understand, so easy that it is unsettling.

A signal from an unknown source, using Morse code invented by humankind, with perfect English grammar, zero spelling errors, and zero grammatical deviations, responded to their existence signal sent into the void forty-eight hours earlier.

She called Yao Chong from the medical pod.

Yao Chong's eyes were still covered with gauze—a side effect of visual pollution; if he opened his eyes for more than three minutes, he would see geometric structures that did not belong to three-dimensional space wriggling at the edge of his field of vision.

"Read it to me."

Shen Ruozhi read it.

Quiet.

"Pattern.Mirror.Response.Beacon." Yao Chong repeated each word carefully. "Four nouns, each a technical term."

"You don't think this is English?"

"It's English, but it's not just English." He tapped his fingers twice on his knee—a habit he'd inherited from Chen Dunli, though the rhythm was far less precise, but the method did, to some extent, help him concentrate. "The order of these four words isn't natural language word order. Natural language would say 'a beacon is responding to your signal' or something like that. But this—four nouns side by side, AND connected—is the format of a data packet, field names."

"Data packet?"

"The handshake is the first step in establishing a connection between two devices—exchanging identity information. Who am I, what system am I, and what can I do? This signal is doing that."

Rajeev was being called in while he was adjusting the cooling system of the quantum core.

The head of the communications engineering team, 37 years old, was a senior researcher at the Signal Processing Laboratory in Bangalore before the whale fall.

He glanced at the waveform data and remained silent for ten seconds.

"The carrier frequency," he said, "is the hyperfine transition frequency of the hydrogen atom divided by π."

Shen Ruozhi and Yao Chong turned their heads at the same time.

"Just like the slight disturbance in the fourth arc on the day of the whale fall." Yao Chong's voice was very soft.

"Same. Accurate to twelve significant figures."

"From the same source."

"Or the same protocol."

For the next 72 hours, the three men hardly left the communications room.

Shen Ruozhi is in charge of information layer decoding—the signal is not just the surface layer of English.

English is merely the human-readable head.

The layers of mathematical structures below are nested like matryoshka dolls, with each layer being more abstract, more fundamental, and closer to a certain basic language than the one above.

Rajeev was responsible for physical layer analysis—carrier characteristics, modulation methods, and channel coding.

He discovered that the error correction code for the signal used an algorithm never seen in any human communication system, but the mathematical structure of this algorithm had a striking homology with the underlying coding of the Fortress Quantum Core.

It's not similar.

They share the same origin.

Like translating the same original text into two different languages—the wording may differ, but the topological structure of the syntax tree remains completely identical.

Yao Chong was responsible for unifying the mathematical framework.

He put Shen Ruozhi's information layer and Rajeev's physical layer into the same set of equations, trying to find a model that could describe both at the same time.

Two days ago, they were stuck on the third floor.

The mathematical structure of the information layer suddenly changed after the second layer—from linear algebra to some kind of topological operation they had never seen before.

Shen Ruozhi tried seventeen decoding frameworks, all of which failed.

Rajeev went through the carrier data six times but found no new modulation channels.

"We're missing a key," Rajeev said in the forty-eighth hour.

Yao Chong remained silent.

He went to Chen Dunli's cabin.

The old man didn't leave behind much.

A few notebooks, an old terminal, and a metronome that no longer beats.

He opened the terminal and turned to the folder that Chen Dunli had labeled "underlying protocols".

That piece of code "copied from a dream" is still there.

During his lifetime, Chen Dunli made extensive modifications to the quantum core in order to maintain the stability of the "water stain".

During the transformation process, he wrote this low-level code—which does not rely on any known programming language and is described directly using mathematical structures.

He said at the time that the code was "copied from a dream," and then laughed, saying it might be a side effect of frequency pollution.

Yao Chong brought up the code and placed it side by side with the topology of the third layer of the signal.

silence.

Then he started typing.

The model was completed in the early hours of the third day.

只有一行。

An equation.

Five variables.

Twelve parameters.

Five variables correspond to five smooth manifolds: benevolence, righteousness, propriety, wisdom, and trustworthiness.

The twelve parameters correspond to twelve topological structures—the five constants plus the seven deadly sins.

The equation itself—

Yao Chong stared at it for a long time.

The core equation of that code is exactly the same as the equation after the signal is decoded.

Same equation. Same "designer".

Liu Pan watched the whole process from the side.

He didn't speak, but from the moment the signal was detected until now, he had been standing in the corner of the communications room, his eyes closed, "watching" the waveform in a way that didn't belong to any known sensory channel.

He opened his eyes at that moment.

"That thing you decoded," he said, "I've been looking at it. Not at the waveform data—I've been looking at it itself. It's not a signal. It's a door."

"What do you mean?"

"You're decoding the words on the door. I see the door." Liu Pan's voice was calm, unnaturally calm—just like when he was being calibrated on the day of Whale Fall. "There's something behind the door. Many layers. Like a building. We're on one of those floors."

Shen Ruozhi projected the complete decoding results onto the wall of the communications room.

Those still able to move around inside the fortress, including the thirteen people who came in later and were confirmed not to be shape-stealers disguised as survivors, all stopped what they were doing.

The decoding result is divided into four layers.

First layer: System identifier.

"EDEN. Maintenance System. External Interface. Status: Active."

eden.

Maintenance system.

External interface.

Status: Active.

Second layer: Protocol identifier.

"BOB. Binary Observer of Being. Protocol Version: 7.0. Function: Existence Stability Monitoring."

Existence boundary observation protocol.

Version 7.0.

Functionality: Stability monitoring is included.

The third layer: system architecture.

A topology diagram.

The nodes are arranged in layers, with a total of thirty-six layers.

A name was labeled at the very bottom.

「TAI-HUANG-HUANG-ZENG-TIAN. Layer 36. Status: Contaminated.」

Emperor Huang Zengtian.

The thirty-sixth floor.

Status: Contaminated.

Nobody knows what the name means.

But Yao Chong's fingers stopped on his knee.

Fourth level: Warning.

"REALITY CONTAMINATION DETECTED. SOURCE: EXTERNAL. SEVERITY: CRITICAL. RECOMMENDED ACTION: CONTAINMENT OR FORMAT."

Real-world contamination has been detected.

Source: External.

Severity: Critical.

Recommended action: Isolate or format.

It was quiet for a long time.

Ali Hassan—the current head of logistics, a 43-year-old Jordanian, was formerly the manager of a logistics company in Amman. He was temporarily recruited during the middle of the Eye of the Abyss project—and he was the first to speak.

"Format," he said, his voice flat, as if reading a report he had already read. "Format. Like formatting a hard drive."

No one responded.

Because everyone understood.

The object being "formatted" is not the hard drive.

It was them.

"Eden" is a system.

They are in the same system.

The laws of physics—those that have been stripped away, those that are crumbling, those that they spent eighteen days trying to understand—are not the skin of the universe.

It's the system code.

The code is being rewritten.

It's not that the universe is dying.

The program is shutting down.

"Formatting" is the final cleanup before shutting down.

While everyone was silent, Shen Ruozhi glanced at the Morse code on the screen one last time.

Perfect grammar.

Zero errors.

Zero latency.

A response from outside the system, so precise it's like an automated reply.

This doesn't feel like the first time we met.

This is like the standard script used by customer service representatives.