Chapter 159: The Dormant String Tone

The radiation zone has no radiation sensation.

Under the reviewer's "formatted snow" cover, even the prickling of radioactive particles vanished. The convoy simply entered an even paler pallor—the earth was the white of bone ash, the sky the white of a hospital ceiling, and even the gravel crushed by the tires resembled dry snow being trampled.

"All detectors have failed," Kaiwen slapped the terminal, the radiation reading on the screen stuck at "0.00"—which is scarier than a high value, meaning all external perception is blocked, "How do we find the entrance?"

Su Yu held the coral. In the utterly colorless world, the coral had become a warm stone, but the golden patterns remained—not visually, but tactilely: the fingertips could feel the raised patterns, like Braille.

She closed her eyes and "read" with the pads of her fingers.

Chen Mo left behind more than a color Definition. At the deepest part of the patterns lay a three‑dimensional map: not a visual map, but a "tactile map." Her fingertips sensed tactile codes of height, depth, and distance—an ancient seeder's navigation system designed for the blind.

"Turn left 300 meters," Su Yu said, her voice in the pallid air like a worn violin string, "then you'll feel the ground's vibration frequency shift… like a heartbeat."

Lao Zhao complied. When the wheels pressed onto a road of some special material, everyone truly "felt" it: not a sound, but low‑frequency vibrations conducted through the bones—boom… boom… boom… at seven‑second intervals.

"This is…" Han Qing frowned, "the pre‑disaster city subway resonance frequency. There's a subway branch beneath the chemical plant!"

The entrance lies within the wreckage of a subway ventilation shaft.

The manhole cover had been welded shut, but the weld marks were fresh—someone had maintained it within the past three years. Lao Zhao produced a cutter, and sparks in the pallid world resembled silent fireworks.

Li Xiaofeng crouched nearby, his fingers tracing the edge of the weld: "Dad, this welding technique… is military. My dad—my biological father, he was a combat engineer, he taught me this method."

Lao Zhao's cutting hand paused for a second. Then he continued, but his movements were lighter: "Then you should be able to cut. Come, continue."

He handed the cutter to Li Xiaofeng. The young man took it, his hand steady, cutting along the weld's stress lines, 30% more efficient than Lao Zhao. When the opened manhole cover hit the ground, Li Xiaofeng whispered, "He once said… a good welder doesn't weld it tight, but welds it 'appropriately', so the next person who needs to open it can do so."

Lao Zhao patted his son's back, saying nothing.

Below the shaft there was no darkness— in the colorless world, darkness did not exist either. It was merely a "deeper pallor." Yet as they descended they sensed a temperature shift: from the ground's chill to the shaft's… constant temperature. 22 °C, the standard human comfort temperature.

Deep within the subway tunnel, there was light.

It was not visual light, but a "light of presence"—against the utterly pallid backdrop, a soft, bounded silhouette. At the center of the silhouette sat an old man.

He wore a pre‑disaster engineering uniform, faded white but tidy. He held a violin in his hand, but did not draw it; his fingers hovered over the strings. He kept his eyes closed, as if listening to something.

"Representative of the Fifth Community, Lin Shouzhuo," the old man said, his voice as gentle as the shaft's constant temperature, "I have been waiting for you… for seven years, three months and five days."

Su Yu stepped forward: "The drilling platform people said you volunteered to become test subjects."

"Partly," Lin Shouzhuo opened his eyes—their hue a cloudy gray, not faded but cataract gray, "Three years ago, researchers approached us, saying they could treat radiation sickness with Seran technology, on the condition we supply data samples of a 'no‑emotion state.' We agreed."

"Why?" Han Qing's hand rested on his gun.

"Because we were all near death," the old man smiled, "In late‑stage radiation sickness, pain makes emotion a luxury. We wanted… at least before we die, to give something useful to those who come after us."

He rose, his movements slow yet steady: "But we kept a card up our sleeve. The ones who received treatment were peripheral members. The core seventeen… have been guarding here, safeguarding the final legacy left by Ai O."

He turned toward the tunnel's depth, making a 'please' gesture.

At the tunnel's end was not a room but a massive, damaged pipe organ.

The organ's body was embedded in the rock wall, its pipes rising upward, vanishing into darkness. The keys were made of some luminous crystal, presenting the only "color" in the pallid world—not a visual hue, but a "cognitive color": anyone who saw them would have their brain automatically fill in the notion that "it should be light blue."

"Ai O is not a Seeder," Lin Shouzhuo's hand brushed the keys, which emitted a silent vibration, "He is… a Tuner. The first‑generation Tuner of the Seran civilization, who fled his homeworld before the emotional modules were erased."

He pressed the central key.

The pipe organ made no sound, yet the tunnel began to glow—not visual light, but memory light: countless holographic images rose on the rock wall, all pre‑disaster human daily life—children running in a park, couples embracing at sunset, an elder playing chess beneath a tree, workers sweating in a workshop…

Each image lacked color, yet each possessed temperature. Su Yu "felt" those temperatures: the heat of sweat from children running, the body warmth of an embrace, the coolness of a chess piece dropping, the salty warmth of sweat.

"Ai O invented the 'Emotional Frequency Encoding,'" Lin Shouzhuo said, "He encoded humanity's most precious emotional moments into distinct frequencies, stored within this instrument. Press the corresponding key, and that frequency can propagate through the plant network—Awakening the associated emotional memory."

He looked at Su Yu: "Chen Mo's coral is a 'key.' It can activate this instrument."

Su Yu placed the coral into the groove above the key.

The coral's golden patterns suddenly came alive, spreading into the organ like veins. The keys began to pulse automatically, playing a melody no one had ever heard—not an air vibration, but a vibration of space itself.

The images on the rock wall started to flow, like a fast‑forwarded silent film. But this time, the figures in the images turned their heads, looking toward the people in the tunnel.

A mother cradling a child smiled at Xiao Yu.

An elderly craftsman nodded at Lao Zhao.

A young soldier saluted Han Qing.

The final image was Chen Mo.

It was not the Chen Mo seven years later, but the Chen Mo three days before the disaster. He sat on a motorcycle, speaking to the camera—no, to future Su Yu—without sound, but his lip movements were clear:

"If you see this, it means I failed. But that's okay; failure is also part of the legacy."

"Ai O left this instrument not for us to reminisce about the past, but to remind us that the essence of civilization is not survival, but choosing how to survive."

"Now, choose—use the music to awaken the world, or conserve the energy to resist Seran?"

The keys stopped.

All images froze, looking at Su Yu.

From outside the tunnel came a vibration—the reviewer's spacecraft landed on the radiation zone's ground. The gray‑white snow fell more densely, and even the 22 °C constant temperature began to drop.

Kaiwen's terminal suddenly blared an alarm—the reviewer was scanning underground and would discover this place in seventeen minutes.

Han Qing looked at Su Yu: "How do we choose?"

Su Yu's hand rested on the key. She could feel that the instrument's energy was sufficient for only one action: either broadcast the Emotional Frequency worldwide once, restoring color and memory to all humanity; or concentrate the energy to create a shield, temporarily blocking the reviewer.

The former might awaken the world, but could also exhaust the energy, leaving everyone exposed to Seran.

The latter could buy time, but the world would remain pallid.

She closed her eyes.

The scar on her chest, that already cooled scar, suddenly sent a final tremor—Chen Mo's last fragment of consciousness left in the world, the final echo before it fully dissipated:

"Choose the option that lets Xiao Yu see the color of sunflowers."

Su Yu opened her eyes and smiled.

She pressed the key.

It wasn't a single key but both hands pressing—left hand pressing the frequency of "Hope," right hand pressing the frequency of "Resistance." All the organ's pipes vibrated simultaneously, emitting a silent… that could cause the entire Earth plant network to resonate—

chord.

Outside the tunnel, the pallid world began to crack.

In the first crack, color seeped out——

It was not the color of restoration, but the color of rebirth: what seeped from the sky's fissure was a never‑before‑seen hue between gold and orange, the "dawn color"; what welled from the earth's fissure was a deep blue‑tinged purple, the "source color"; what blossomed on the treetops was a green edged in silver, the "newborn green".

This was a color humanity had never seen.

It was a color designed by Aeon, belonging to the future.

The inspector's spaceship shuddered violently in the newborn colors, its silver‑white hull beginning to crack——these colors were not in its formatting program, they were "Error Signal data".

And at the other end of Earth, in the greenhouse of the Pure Land, the sunflower in Xiao Yu's arms suddenly bloomed into a seven‑colored flower.

The child looked at the flower, and tears finally had color——

It was transparent, but truly the "color of tears".