Chapter 124: Bunker Era, Year 11 Lightspeed II
⚠️ Spoiler Warning: This guide contains detailed spoilers for the entire novel. Proceed only if you've finished reading or are comfortable knowing the plot.
Summary
In Bunker Era Year 11, Cheng Xin and Cao Bin travel to Halo City but stop to inspect the abandoned science city Lightspeed II. Cheng Xin is curious about its history. Cao Bin explains that Lightspeed II once housed a microscopic black hole created by the Black Hole Project, part of the Black Domain Plan aimed at lowering the speed of light. Inside the dark city, they see a faint blue glow from the black hole's accretion. Cao Bin recounts the story of physicist Gao Way, a severely autistic man who became obsessed with altering the constant speed of light. The black hole was made by injecting a microscopic black hole into Jupiter's moon Leda, which melted and collapsed into a twenty-one-nanometer-radius event horizon. After years of failure, Gao Way entered the protective net and fell into the black hole. Due to relativistic time dilation, from our frame he appears frozen at the event horizon, still alive but forever falling. His disappearance led to an insurance dispute—the company refuses to pay because his death cannot be proven. The city was abandoned. Cheng Xin is moved by the tale of a man forever caught between life and death.
Key Events
- Cheng Xin and Cao Bin approach the ruined Lightspeed II, which does not spin and has cracked exterior walls.
- They enter through a large crack into the dark interior; Cao Bin turns off the searchlights, revealing a faint blue glow from the center.
- Cao Bin explains the glow is from space dust falling into a microscopic black hole five kilometers away, with a Schwarzschild radius of twenty nanometers and mass equivalent to Jupiter's moon Leda.
- He recounts the history: the Black Hole Project began in Bunker Era Year 1 and lasted eleven years; the black hole was created by injecting a microscopic black hole into Leda, which melted and collapsed.
- After years of research failing to lower the speed of light, lead physicist Gao Way—who suffered from severe autism—became obsessed and entered the protective net, drifting into the black hole.
- Observations showed his figure at the event horizon, appearing normal due to the lack of tidal forces; time dilation means he is still falling from an outside perspective.
- The insurance company refused to pay death benefits because Gao Way cannot be proven dead within our frame of reference.
- A woman who loved Gao Way sued to stop further research on the black hole, but failed; Lightspeed II was abandoned, awaiting the black hole's evaporation in about fifty years.
- Cheng Xin, shaken by the story, asks to leave for Halo City.
Character Development
- Cheng Xin: Her curiosity about the abandoned city leads her into a dark encounter with existential horror. She shows empathy by imagining Gao Way's plight and feeling emptiness at the sight of the flickering black hole. The story deepens her understanding of the human cost of scientific ambition.
- Cao Bin: He serves as a storyteller, revealing his complex feelings about Gao Way. He admires Gao's brilliance but pities his suffering, and he understands the tragedy of a genius undone by his own obsession. His reluctance to enter Lightspeed II highlights his respect for the eerie significance of the place.
- Gao Way (described indirectly): A severely autistic physicist who identified his own unchanging nature with the constant speed of light. He viewed altering light speed as a way to transform himself, and when he failed, he sought the singularity where normal laws break down, suggesting a desire to escape his own limitations.
Themes, Symbols, and Motifs
- The Constancy of the Speed of Light: A central motif—the one unchangeable constant in the universe. Light is described as being "tortured" in experiments without success, symbolizing the limits of human control over nature. The saying that the Creator welded shut only the speed of light emphasizes this barrier.
- The Unreachable Event Horizon: Gao Way's frozen fall represents a state of eternal limbo—neither alive nor dead, trapped by relativity. This echoes the novel's larger themes of suspended time and the gap between human experience and cosmic law.
- The Black Hole as a Mirror: Gao Way saw the black hole as something that could speak to him; it reflects his own singularity of mind. His decision to enter it is both a surrender to oblivion and a desperate grasp at a place where rules no longer apply.
- Insurance as Metaphor: The absurd insurance dispute highlights the clash between human legal systems and overwhelming physical reality. It underscores the difficulty of defining death when time itself behaves differently.
Why This Chapter Matters
Chapter 124 deepens the novel's exploration of fundamental physics and the human psyche. It provides a concrete example of the Black Domain Plan's failure in practice, while also offering a poignant character study of a genius broken by his own obsession. Gao Way's story mirrors Yun Tianming's later fate in its blend of love, sacrifice, and relativistic paradox. The chapter also sets up the black hole as a recurring symbol of unreachable knowledge and the limits of science. Cheng Xin's haunted reaction foreshadows her own role in decisions about the future of humanity and the Trisolaran threat.
Study Questions and Answers
1. Why does Cao Bin describe Lightspeed II as a "ghost city"?
The city is empty and damaged, no longer spinning, and its interior is dark except for the faint glow from the black hole. The absence of life, the broken structure, and the mysterious light make it feel haunted, especially once Cheng Xin learns of Gao Way's perpetual fall.
2. How does the insurance dispute over Gao Way's death illustrate the problems of relativistic time dilation?
From the outside frame of reference, Gao Way has not yet crossed the event horizon—his fall is slowed infinitely. Insurance contracts operate in a single human frame, so his status is neither alive nor dead, and his death cannot be confirmed. This paradox shows how physical laws can break our social institutions.
3. What does Gao Way's identification with the speed of light reveal about his character?
He saw his own autism as an unchangeable constant, like the speed of light. By trying to alter light, he hoped to change himself. His failure drove him to despair, and his entry into the black hole was an attempt to escape the unchangeable laws that he felt trapped him.