Chapter 110: Silent Echo

"Voyager" drifted silently through the void, its engine's hum lower than ever before.

No one spoke on the bridge. Han Qing stood before the main console, his finger hovering above the control panel, yet he did not lower it for a long while. His gaze fell on the empty captain's seat—where a person should have been, one who always could find a way out of a dire situation.

Su Yu has locked herself in the rest cabin that Chen Mo once used for three days now.

The cabin remained unchanged: a tidy bed, a half‑opened old‑era paper book on the desk, and a hand‑drawn Star Map on the wall—a map Chen Mo had drawn during the Pure Land era based on children's descriptions of an imagined night sky. Now they have seen the real starry sky—vast, cruel, beautiful—and it has taken the artist away.

Su Yu sat on the bed edge, both hands cradling the paper book. She did not read, but repeatedly brushed the rough edges of the pages with her fingertips. Between the pages lay a dried leaf, the first successful harvest from the early Pure Land greenhouse. Chen Mo had said that the leaf proved life could be reborn on the most barren soil.

But now?

A faint knocking came from the hatch, the rhythm familiar—three short beats and a long one, Kaiwen's habit.

"Su Yu sis…" Kaiwen's voice came through the door panel, a bit hoarse, "I… I analyzed the final energy residue data of the Starlight Crystal. Some thing… I think you should see."

Su Yu gave no reply. She stared at the dried leaf, and in her mind was Chen Mo's final smile as he leapt out of the hatch—mixed with farewell, trust, and a release she hadn't understood then but now pierced her heart.

"He already knew," Su Yu whispered, her voice in the silent cabin so faint it was almost inaudible, "He knew it might be a one‑way ticket."

Outside the door, silence lingered for a moment.

"Yes," Kaiwen's voice lowered, "The crystal's final transmission data shows that the 'key' insertion program for the Door of the End theoretically requires continuous energy supply and… the operator's consciousness anchoring. It's like a diver pulling a safety rope into the deep sea; someone must be pulling on the other end."

But Chen Mo cut the rope, so that the "Voyager" could escape.

Su Yu closed her eyes, tears finally slipping silently down. She wasn't sad about his sacrifice—that was his choice, and his duty as a leader. What saddened her was that at the moment he made that decision, she could only watch, unable to do anything else.

Outside, Kaiwen seemed to hear the suppressed sobbing. He hesitated, neither leaving nor knocking again, but leaned against the hatch and slid down to sit, pulling a palm‑sized data pad from his pocket. The screen displayed a complex spectral analysis chart—the record of Chen Mo's final moments, the interaction between the Starlight Crystal and the Door of the End's energy.

"He succeeded, Su Yu sis," Kaiwen whispered to the door panel, sounding more like convincing himself, "After the crystal was inserted, the Door of the End's energy fluctuations entered a complete standstill for seventeen seconds. Though it later resumed, the intensity dropped by over forty percent, and… its 'devouring range' stopped expanding. This isn't temporary; we've been monitoring during our escape, and its influence radius has fixed."

"He used himself to press the pause button for the entire universe…"

Inside the hatch, the sobbing stopped.

A long while passed, long enough that Kaiwen thought Su Yu wouldn't respond, when the lock emitted a light "click."

The door opened.

Su Yu stood in the doorway, eyes swollen red, complexion pale, yet some extinguished thing in her gaze reignited a faint glimmer. She looked at Kaiwen, her voice hoarse yet clear: "Show me the data."

The ship's mess hall was suffused with a strange atmosphere. The food synthesizer operated as usual, but few came to collect meals. Most preferred to gnaw energy bars in their own cabins rather than return to this place that once rang with conversation, even occasionally with Zhang Yang telling vulgar jokes.

Today, Zhang Yang sat in a corner of the mess, a plate of barely touched synthetic meat patties before him. He stared at the patties, his gaze fixed.

Wang Hu carried a tray and sat opposite him; the metal tray clanged lightly against the table. Neither spoke, merely eating in silence—or rather, mechanically shoving food into their mouths.

"Hu Zi." Zhang Yang suddenly said, his voice muffled, "Do you remember our first mission with the boss, to that abandoned ark supply station?"

Wang Hu paused his chewing, nodded: "I remember. You almost stepped on a landmine."

"It was the boss who pulled me back," Zhang Yang tugged at his mouth, trying to laugh but looking worse than crying, "Later he scolded me for a full ten minutes, saying 'A reckless man who dies is just a corpse, useless.' But now… the one who should have survived is gone."

Wang Hu set down his spoon, gazing at the eternal starry sky beyond the porthole. "He didn't die." The usually silent man spoke a lengthy sentence for once, "He's there. He became… the 'pause button.'"

"I'd rather he come back alive to scold me!" Zhang Yang hammered his fist on the table, the cutlery clinking crisply. Seconds later, he sagged his head, "... but if it were me there, I'd jump out too."

That's the damned charm of Chen Mo—he never demanded anything, yet everything he did made you feel that you would have done the same.

Han Qing carried coffee past them, his steps pausing. "Forty‑eight hours now," he said calmly, "'Door of the End's' energy readings maintain a steady decay trend. Kaiwen's preliminary conclusion is that Chen Mo's 'intervention' may have restructured part of its core logic—like inserting an infinite loop redundant command into the devouring program; it can't stop the program, but it greatly slows its operation."

Zhang Yang looked up at him: "Speak human language, Han Bingkuai."

"We've bought time," Han Qing sipped his coffee, "but we don't know how much. Years? Decades? Centuries? Regardless, we must decide how to use this time."

He walked toward the bridge, his back straight, but the joints of the fingers gripping the coffee cup were slightly white.

Wang Hu watched Han Qing leave, then suddenly said, "He wants to cry."

Zhang Yang was startled.

"Han Qing," Wang Hu lowered his head and kept eating, "Whenever he's especially sad, he talks a lot, very professionally. He's covering his emotions with data and analysis…"

The mess fell silent again. This time, the silence carried something extra—a tacit understanding bearing a shared weight.

The journey back to the Solar System took several times longer than the departure. The "Voyager" was heavily damaged, able to maintain only sub‑light speed. During this period, subtle changes occurred aboard.

Su Yu began to frequent the laboratory. Together with Kaiwen, she studied the residual data of the Starlight Crystal, trying to understand what Chen Mo ultimately did to the Door of the End. The work was painful yet necessary—each data set pointed to his final moments, but also the only way to feel he was still somehow "participating."

"Look here," Kaiwen said, pointing to an abnormal peak on the energy spectrum line, "0.3 seconds before the crystal completely lost contact, it emitted a faint directional pulse. Not toward the Door of the End, but… toward the direction of our escape."

Su Yu leaned toward the screen: "Can we decode the content?"

"Too weak, and heavily interfered," Kaiwen shook his head, "But the pulse's encoding structure… resembles the format Luo Ya's civilization used to encapsulate 'civilization seed' data packets. The boss may have… at the last moment, 'thrown' some information out, hoping we could capture it."

"Did we capture it?"

Kaiwen brought up another interface: "The pulse indeed struck the Voyager's rear sensor array. The energy interference was so strong that the data was drowned in noise. I'm trying a new algorithm to filter the noise; it may take… a long time."

Su Yu nodded, not urging. She looked at a Petri Dish in the lab corner—cells extracted from the dried leaf in Chen Mo's cabin, slowly reviving in a faint energy field. Kaiwen said this might be the 'heart fire' energy's catalytic effect on living matter.

"If 'heart fire' can revive a dried leaf," Su Yu whispered, "then could it…"

She didn't finish. Kaiwen understood.

"Theoretically, if consciousness can be preserved in some form within a 'heart fire' field, and we have a sufficiently strong field and precise 'coordinates'…" Kaiwen adjusted his glasses, a scientist's fervor flashing in his eyes before dimming, "But we still don't fully understand the nature of 'heart fire.' And even if we could, would it still be 'him'? Or just an energy entity bearing his memories?"

Su Yu gave no answer. She recalled Chen Mo's words when the Pure Land first established a school; a child asked, "Where do people go when they die?" Chen Mo answered, "They live in the hearts of those who remember them, in the deeds they performed, in the world that became better because of them. As long as those remain, they have not truly left."

Now, she understood the weight of that sentence more than ever.

On the seventy‑eighth day, the outline of the Solar System finally appeared at the far side of the observation window. The azure planet, after such a prolonged dark voyage, looked heartbreakingly small and breathtakingly beautiful.

The "Voyager" began receiving a signal from Qiming City. Hui Jin's voice was the first to come through, calm yet tinged with suppressed emotion: "Welcome home. We have… known."

Then came reports from administrators, inquiries from the defense corps, messages about spontaneously organized public memorials… the world kept turning, bearing a massive wound, yet still turning.

Han Qing was in charge of interfacing with Qiming City for navigation data and status reports. When asked about the next plan, he looked at Su Yu—unwittingly, she had become a core in a sense, not because of a title, but because everyone knew she bore the deepest connection to Chen Mo.

Su Yu walked to the communicator, silent for a few seconds.

"We need to go home first," she said, her voice beamed back to Earth, "Then we need to find the 'information' he left—whatever it is. Finally…"

She glanced at the blue planet growing nearer outside the porthole.

"We must make this world worthy of his sacrifice."

At that moment, the ship's sensors picked up an encrypted message from Jupiter's orbit. The source was—"Black Box" observation station.

The message is brief, only a single sentence, using the basic code agreed upon after a silent dialogue.

【Observed "key" pulse residue. Detected abnormal "echo". Recommendation: check the "origin".】

Origin?

Su Yu and Kaiwen met each other's gaze and simultaneously thought of the same place—the place where the story began.

"Pure Land," Su Yu said softly.

"Voyager" entered Earth orbit, below it the brilliantly lit Qiming City. Yet in everyone's mind, a more ancient, more primitive coordinate was becoming clear again.

The journey is over.

But the search has only just begun.