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# The Three-Body Problem
During China's Cultural Revolution, astrophysicist Ye Wenjie watches as Red Guards beat her father to death for refusing to denounce physics as counter-revolutionary. This trauma shapes everything that follows. Sent to a remote military base called Red Coast, officially a radar facility, Ye discovers its true purpose: listening for extraterrestrial signals. When she detects a message, she makes a choice that will determine humanity's fate.
Decades later, nanomaterials researcher Wang Miao is drawn into a crisis. Scientists worldwide are committing suicide after encountering something that shattered their worldviews. Wang is asked to infiltrate a group called the Frontiers of Science, which seems connected to the deaths. His investigation leads him to a virtual reality game called Three-Body, which depicts a world suffering under chaotic orbital mechanics—sometimes frozen, sometimes scorched, its civilization repeatedly destroyed and rebuilt.
The three-body problem of the title is a real physics conundrum: the motion of three gravitationally interacting bodies cannot be precisely predicted, producing chaotic behavior. In the novel, Trisolaris is a planet in such a system, orbiting three suns in patterns that produce unpredictable 'Stable' and 'Chaotic' eras. The Trisolaran civilization has survived countless apocalypses, developing technologies and psychology radically different from humanity's. They are coming.
Ye Wenjie's response to the alien message invited the Trisolarans to Earth. Despairing of humanity after the Cultural Revolution's atrocities, she saw alien contact as salvation—or deserved judgment. An Earth-based organization, the ETO, has formed to welcome the invasion, believing any change must be better than human civilization's trajectory. But the Trisolarans, shaped by their harsh world, see Earth only as a target for colonization.
The Three-Body Problem won the Hugo Award and introduced Liu Cixin to international audiences. The novel combines hard science fiction—the physics of orbital mechanics, the nature of fundamental particles, the challenges of interstellar communication—with Chinese history and philosophy. Its bleak view of cosmic sociology, developed further in sequels, proposes that civilizations cannot trust each other across the void, making the universe a 'dark forest' where survival requires silence or preemptive destruction.
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