Scene Overview
The killing of Lei Zhicheng and Yang Weining by Ye Wenjie occurred during the later operational period of Red Coast Base and is one of the core secrets gradually revealed through flashbacks and investigation in the first Three-Body novel. The timeline of this event is closely connected to Ye Wenjie's transmission of a signal into space and her receipt of the Trisolaran civilization's reply — it was precisely because someone discovered evidence of her communication with an alien civilization that Ye Wenjie was forced to take extreme action to conceal the truth.
Detailed Description
Background: Ye Wenjie's Trauma
To understand Ye Wenjie's actions, one must trace back through everything she experienced. Ye Wenjie was born into an academic family; her father, Ye Zhetai, was a renowned physics professor at Tsinghua University. The Cultural Revolution utterly destroyed her world: she watched as her father was beaten to death by his own students and wife (Ye Wenjie's stepmother) during a Red Guard denunciation rally. Young Ye Wenjie was forced to stand below the stage and watch — this traumatic experience became the psychological origin point for all her subsequent actions.
Afterward, Ye Wenjie was sent to an Inner Mongolia Construction Corps logging operation. There, a journalist's deliberate misquoting drew her into political persecution — her sincere appeal to protect the Greater Khingan Range's primeval forests was twisted into statements opposing the Great Leader. Facing serious political consequences, Ye Wenjie was "rescued" by Red Coast Base director Lei Zhicheng — he needed her astrophysics expertise to assist the base's work.
However, Lei Zhicheng's "rescue" was not born of goodwill. Bringing Ye Wenjie into Red Coast Base essentially transformed her into a technical tool without freedom, rights, or security from disposal. Her status at the base was extremely low — she was a person with "political problems," permitted access to top-secret projects solely because her professional capabilities were irreplaceable.
Yang Weining was an engineer at Red Coast Base and one of the few people who showed kindness to Ye Wenjie. They eventually married, though the marriage was based more on practical necessity than deep affection — Yang Weining's status provided Ye Wenjie with a degree of political protection. Ye Wenjie's feelings toward Yang Weining were complex: she was grateful for his kindness but never truly established a deep emotional connection with him.
Sending the Signal and Receiving the Reply
During her work at Red Coast Base, Ye Wenjie discovered the principle that the Sun could serve as an electromagnetic signal amplifier. During a solo night shift, she used this discovery to transmit a signal containing basic information about Earth's civilization toward the Sun through the base's transmission equipment. After solar amplification, this signal propagated deep into space.
Eight years later, Ye Wenjie received a reply from Alpha Centauri. The reply came from a "pacifist" within the Trisolaran civilization (a listener), containing an urgent warning: "Do not answer! Do not answer! Do not answer!" The warning's meaning was clear: if Earth replied, the Trisolaran civilization would lock onto Earth's location and dispatch a fleet.
Faced with this warning, Ye Wenjie made the choice that changed humanity's fate — she transmitted another signal toward the Sun, replying: "Come here. I will help you conquer this world."
The psychological foundation for this decision came from Ye Wenjie's complete despair toward human civilization. During the Cultural Revolution, she witnessed humanity's darkest aspects — family members betraying each other, intellectuals destroyed by mobs, justice and reason utterly trampled. She did not believe human civilization possessed the capacity for self-repair, nor that humanity deserved continued existence. In her view, only the intervention of a more advanced alien civilization could save (or more accurately, reform) humanity.
Secret Exposed and Murder
While Ye Wenjie's signal transmission and reply reception were extremely covert, they were not entirely without traces. Base commissar Lei Zhicheng, during routine review of work logs and equipment usage records, discovered anomalies — equipment usage during certain time periods didn't match official mission records. Using his keen political instincts and investigative abilities, Lei Zhicheng gradually pieced together the outline of truth: Ye Wenjie had used Red Coast Base equipment for unauthorized signal transmissions.
More critically, Lei Zhicheng discovered evidence of Ye Wenjie's receipt of an alien reply. This discovery placed him in a complex situation: reporting the matter would constitute the most significant discovery in human history, but it would simultaneously mean extremely severe consequences for Ye Wenjie (unauthorized transmission to alien civilization was tantamount to treason in that political environment).
Ye Wenjie realized Lei Zhicheng knew her secret. At a critical moment, she faced an irreversible choice: if Lei Zhicheng revealed the truth, her invitation to the Trisolaran civilization would be exposed, and humanity might take measures against the approaching threat. For Ye Wenjie, this meant her plan to "save" humanity (by introducing alien civilization to reform Earth) would completely fail.
Ye Wenjie chose murder. During a base field survey, she staged an "accident" — at a dangerous point along a cliff edge, she pushed Lei Zhicheng over the precipice. Yang Weining was present and either witnessed part of the event or deduced the truth from subsequent evidence. Ye Wenjie could not allow Yang Weining to live either — despite him being her husband and the father of her child. Yang Weining also died in the same "accident," falling from the cliff.
Both deaths were officially recorded as accidents. In Red Coast Base's isolated and remote environment, combined with Ye Wenjie's careful cover-up, the truth of the murders remained concealed for decades.
Ye Wenjie Afterward
After killing Lei Zhicheng and Yang Weining, Ye Wenjie showed no apparent remorse — at least in the novel's narration, she displayed an extraordinary calm. This calm was not cold-bloodedness but the serenity of someone who had crossed a moral threshold: she had already decided to betray all of humanity, and two deaths appeared insignificant against that scale.
Ye Wenjie lived the rest of her life under this secret's shadow. She later became the spiritual leader — the "Commander" — of the Earth-Trisolaris Organization, using her unique status as the first person to establish contact with an alien civilization to gather followers equally despairing of human civilization.
Original Text Analysis
Ye Wenjie's killing of Lei Zhicheng and Yang Weining is one of the most controversial plot points in the Three-Body trilogy and is key to understanding this complex character.
Liu Cixin demonstrates masterful character crafting in his portrayal of Ye Wenjie. She is not a simple "villain" — every step of her fall has profound psychological motivation. The Cultural Revolution's trauma destroyed her basic trust in human nature, Red Coast Base's oppressive environment reinforced her despair, and the discovery of solar amplification gave her a tool to transform despair into action. While her choices are morally unforgivable, they are psychologically comprehensible — the hallmark of a great literary character.
The killing of Yang Weining is particularly heartbreaking. He was one of the few people who brought warmth to Ye Wenjie's life and the father of her child. That Ye Wenjie could kill such a person indicates that something within her had completely died during the Cultural Revolution — not conscience, but the capacity to feel the value of individual life. When a person defines their mission as "saving" or "reforming" all of humanity, individual lives become expendable.
Impact and Significance
This event's impact operates on multiple levels. At the plot level, Ye Wenjie's murders ensured the secret of the Trisolaran invasion was kept for decades, buying the Trisolaran civilization precious time. At the thematic level, it demonstrates a core paradox: Ye Wenjie betrayed humanity because of her despair at human darkness, yet her own actions — murder, deception, betrayal — prove that the human evil she condemned existed within herself. She became part of what she hated.
Ye Wenjie's story is also a profound exploration of the eternal moral dilemma of justifying despicable means through noble ends. She sincerely believed she was saving humanity — by introducing a more advanced civilization to correct Earth civilization's flaws. But this "noble" purpose required her to commit murder, betray her entire species, and ultimately led to the deaths of billions.