Plot Analysis Summary
A prison escape, a puzzle-driven murder pattern, and labor unrest converge around an unresolved struggle for truth and accountability.
Story Structure — 5 Plot Phases
The Escape Behind the Wall
Fu Yuan weakens a prison wall with salt, digs a tunnel, and escapes through the front gate in a government car. Her letter to Song draws the investigation toward Xiang.
Key Events
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Salt Weakens Prison Wall — Fu Yuan secretly uses salt from her meals to weaken the prison wall and dig a tunnel. Characters: Fu Yuan
Location: Prison cell
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Tunnel Ends in Dead End — Investigators discover that the tunnel ends at a dead end, but Fu Yuan has already escaped. Characters: Fu Yuan, Song Donglu
Location: Prison tunnel
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Escape Through Front Gate — Fu Yuan leaves the prison through its front gate in a government car. Characters: Fu Yuan
Location: Prison front gate
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Letter From Xiang — Fu Yuan writes to Song Donglu, revealing that she is in Xiang and expects to meet him. Characters: Fu Yuan, Song Donglu
Location: Song Donglu's investigation office
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Chang Sheng Confronts Song — Chang Sheng confronts Song over anger rooted in their shared past. Characters: Song Donglu, Chang Sheng
Location: Xiang
Old Anger and Falling Bodies
Song encounters Chang Sheng's unresolved anger while a series of apparent falls becomes a murder investigation. Physical traces and a dog connected to a murdered mother provide disturbing clues.
Key Events
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An Apology Offered — Song responds to Chang Sheng's anger by offering an apology. Characters: Song Donglu, Chang Sheng
Location: Xiang
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Deaths Resemble Falls — A series of deaths appears to result from people falling from buildings. Characters: Song Donglu, Chang Sheng, Xiao Fan
Location: Building death scenes
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Investigators Examine Traces — Song and the investigators study footprints and other traces at the death scenes. Characters: Song Donglu, Chang Sheng, Xiao Fan
Location: Death scenes
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Dog Identifies Murder Victim — A little girl recognizes a witness's dog as belonging to her murdered mother.
Location: Death scene
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Factory Protest Erupts — Workers accuse Gao Minxiong of exploitation and demand fair wages and dignity. Characters: Gao Minxiong, Workers' representative
Location: Factory protest
Protest on the Edge
Workers protest Gao Minxiong's alleged exploitation, and Xiao Fan faces danger on a building. Song's warning prevents the moment from becoming a wider call to despair, but the crowd schedules another protest.
Key Events
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Xiao Fan Faces a Fall — Xiao Fan stands in danger of jumping from a building during the public unrest. Characters: Xiao Fan, Song Donglu
Location: Building rooftop
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Song Warns Against Suicide — Song urges Xiao Fan to come down, warning that his death could prompt others to follow. Characters: Song Donglu, Xiao Fan
Location: Building rooftop
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September Seventh Gathering — The crowd agrees to gather again on September 7 as labor tensions continue. Characters: Workers' representative, Song Donglu
Location: Protest area
The Puzzle Becomes Murder
Song connects the killings to a puzzle associated with Fu Yuan. A reader has transformed the puzzle into real crimes, raising questions about Fu Yuan's responsibility and the intended target.
Key Events
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Puzzle Appears in Articles — Song links the deaths to a puzzle presented in articles inspired by Fu Yuan's case. Characters: Fu Yuan, Song Donglu
Location: Investigation office
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Reader Recreates the Crimes — Song learns that a reader turned Fu Yuan's puzzle into real crimes. Characters: Song Donglu, Fu Yuan
Location: Investigation office
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Fu Yuan Claims Limited Responsibility — Fu Yuan claims that she merely began the design that another reader continued. Characters: Fu Yuan, Song Donglu
Location: Investigation discussion
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Professor Discusses Hidden Motive — A professor suggests that the murders and public attention may be building momentum against Gao Minxiong. Characters: Song Donglu, Gao Minxiong
Location: Professor's discussion room
Power Against the Truth
A professor links the murders and public attention to opposition against Gao Minxiong and recalls the 78 deaths in Yuan Xi village. Workers prepare for September 7 while Gao's side plans a festival to soften the protest.
Key Events
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Yuan Xi Village Deaths Recalled — The discussion recalls the deaths of 78 people in Yuan Xi village, blamed on Gao. Characters: Song Donglu, Gao Minxiong
Location: Professor's discussion room
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Power Obscures the Truth — The professor argues that wealth and power can prevent the truth from being established. Characters: Song Donglu, Gao Minxiong
Location: Professor's discussion room
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Workers Prepare to Protest — Workers prepare for the major September 7 protest over wages, dignity, and accountability. Characters: Workers' representative, Song Donglu
Location: Workers' meeting area
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Festival Planned to Defuse Protest — Gao's side plans a festival with food and entertainment to defuse the workers' demands. Characters: Gao Minxiong
Location: Festival grounds
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Confrontation Demands Truth — A confrontation unfolds as someone demands the truth while others plead for the situation to stop. Characters: Song Donglu, Fu Yuan, Gao Minxiong, Workers' representative
Location: Protest confrontation
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Murderer Remains Unidentified — The available events end without identifying the vanished murderer or establishing the final outcome. Characters: Song Donglu, Fu Yuan
Location: Unresolved investigation