Rebirth: Starting from Lighting Up the Tech Tree

A coordinate prompt appeared on the communication panel: the second phase of the Starship's journey would pass through the outer solar system. Jian Ning's finger paused for a moment above the launch button. There was no landing plan; it was just a passage. The full phase synchronization parameters of the solar system's network nodes would be calibrated, a low-power flyby, the entire journey not exceeding one standard time unit. She watched the arc; Blue Star was merely a point of light, emitting a pale blue glow at the edge of the star map. Jian Ning retrieved the calibration signal parameters from the panel, not filling them in according to the standard template, but manually rewriting a section. She wrote slowly, as if writing a line that didn't require anyone's approval. After finishing, she checked twice: the waveform was stable, the power was compliant, and no safety protocols were triggered. There was just an extra, extremely short wave. The exact same frequency interval as the multi-flash she had read about in the Pioneer's log.

Su Kuang leaned out of the cockpit and asked, "Are the calibration parameters ready?" Jian Ning replied, "Yes." She didn't look up when she said it; her finger was still on the launch button. Su Kuang didn't ask any further questions. He trusted Jian Ning, not because of her seniority, but because she always pushed her chair back to its original position after adjusting the communication panel, no more, no less.

Han Lu didn't work overtime that evening. She sat in front of the monitoring screen on the second floor of the control center. The data stream on the screen was as smooth as it had been for the past few decades. Nothing unusual. She signed the last routine report and stood up to turn off the lights. Just then, an indicator light in the lower right corner of the monitor, one that was never online, lit up. She recognized the label of that light; it was a channel code she had never removed or used. Xinghai Low Earth Orbit Beacon. It wasn't a malfunction, nor a false alarm. The indicator light was blue. Stable.

Han Lu didn't sit down. She walked to the window, opened the door, and went to the rooftop. Standing there, the evening light in Hangzhou was receding from the horizon. She looked at the sky, without taking out her phone or notifying anyone. She just stood there waiting. She waited a long time, so long that the streetlights below came on. Then she saw it. Or rather, she felt it. A very thin arc of light appeared somewhere in the sky, not lightning, not cloud refraction, but a quantum arc of light streaking across the sky near the edge of the atmosphere. That arc of light cut through the last orange-red hue of the sunset, like a thread stitching a line on fabric. Not bright. Not long. But it was there. Then, at the very end of the arc, it flashed one more time. The frequency of that extra flash was the same as her habit decades ago—whenever a navigation light in the night sky blinked an extra time, she would look up and count the seconds. Han Lu looked in the direction the light disappeared. She didn't move.

Zuo Weiyang sat in the central consciousness space. Before her lay a diagram of the entire woven network of nodes, but she wasn't looking at it. From the moment the Xinghai entered the outer reaches of the solar system, she had been waiting for the same thing. When the signal of the extra flash passed through the quantum field of the central periphery, she wrote a line in the central log: "The Xinghai just passed Hangzhou. Jian Ning flashed once on its track. The same flash I waited for every day as a child. Not the same person, not the same ship. But that extra flash was the same heartbeat." She paused, then added another line: "Yu Ying's archives filed a batch of new data today." In one of the notes, she wrote: "The frequency deviation between the first extra flash of the first generation of starship communicators and the first extra flash of the second generation of communicators, after comparison, is below the instrument's accuracy threshold." There was another line of even smaller text in the notes column: "Negligible." Zuo Weiyang read that note without leaving a comment. She added a stroke at the end of her central log entry for the day: "Negligible." That was the perfect filing word for the whole thing.

Yu Ying had already archived the last audio file of the day in the archives for long-term storage at the home port. As she closed the interface, she seemed to sense something—not through any leap of consciousness, but pure intuition. She glanced at the status records of the quantum light flow outside the home port. An archive entry was automatically generated in the system log: Communication waveform archived. Category: Non-essential signal. Status: Reserved. Yu Ying didn't bother to ask who decided to reserve it. The home port wouldn't make proactive aesthetic judgments. There was only one condition that could trigger this protocol: this signal had been remembered by more than one person in the web. Her lips twitched slightly as she closed the interface. Very slightly. Like finding an unused old ticket stub in the pocket of a coat she'd forgotten to hang years ago while tidying up the house.

Zuo Cheng sat on the port's porch. No one had come today. The porch passage in front of him had been empty for a long time. When the flickering signal passed through the quantum optical flow surrounding the port, the port's relay layer automatically captured its complete waveform and wrote it into a separate archive label. Zuo Cheng didn't look at the waveform through the central control. He didn't need to. He sat there in the same position he'd been in all day, saying nothing. The porch's automatic recording system marked today's entry as: No visitors. But in the remarks column, it automatically recorded a minor perturbation in the quantum optical flow surrounding the port. The waveform originated in the near-Earth orbit direction and its nature was passing through.

Han Lu returned to the control center from the rooftop. She turned off the main light, leaving only the one by the door. She sat at the control panel for a moment; the cursor on the page used to record the daily updates was still flashing in the blank space. She wrote a short note. It wasn't long. She said that someone flashed above her head this evening—not a malfunction, not a distress signal, just passing by. The spacecraft was returning from its home port to the solar system to adjust parameters; flashing lights were just polite for this flight. She said they caught the light on the ground, not in the antenna, but in their habit of looking up every time the Pioneer passed by. She paused at the last blank space, then added the last sentence: "Light can fall in by itself. No need to wipe it away."

Jian Ning shut down the control panel in the communications bay and pushed her chair back into place. She didn't know if Han Lu had seen that moment, whether Zuo Weiyang had written about her in the central log, or whether the home port would have stored that waveform. She only knew that she had pressed the transmit button. Not the first time. But this time, the wave was pushed from her hand into the atmosphere, through the sky she had looked up at since childhood, and then left a perfect moment of light on someone's retina. Before turning off the light, she glanced out the window; the rainbow halo had just circled back from the bow, casting a slight arc on the cockpit window. Jian Ning thought that next time it passed by, it would flash again. For no reason. Because light doesn't rely on reasons to exist. It only relies on continuing.

There were no stars outside the window. The rainbow halo quietly completed its final rotation. At the end of the day's entry in her journal, Jian Ning wrote a single word: "As usual." She didn't write more. Because she knew that when someone saw that word, they would already know its full meaning. Outside the home port, the waveform was saved, labeled: "Communication History." "Non-essential signal." Reason for retention: None. Retained.