Disappearance
Diao Aiqing was a first-year student at Nanjing University's Adult Education College. Reliable reporting places her last known sighting on January 10, 1996, after she left her dormitory. She did not return.
Her age is reported differently across sources: the South China Morning Post described her as 19, while some Chinese-language reports described her as 20. This file preserves that discrepancy rather than selecting one figure as unquestioned fact.
Discovery and identification
Nine days after Diao disappeared, human remains were discovered in central Nanjing and at locations on or near the university area. Police identified the victim as Diao. The condition and distribution of the remains made the case one of the city's most prominent unresolved homicide investigations.
Some reports describe the remains in highly graphic detail and attach exact counts to them. Those details are not necessary to understand the investigation, so this page records only that the body had been extensively dismembered and distributed across multiple locations.
Investigation
Police conducted a large investigation in and around Nanjing University, but no one was charged. Over the years, the case generated numerous rumors and amateur theories, including claims about possible professions, acquaintances and online writers. None of those theories has produced a verified judicial finding.
In January 2016, after online claims suggested the case had become legally impossible to prosecute because twenty years had passed, China's Ministry of Public Security Criminal Investigation Bureau publicly rejected that interpretation. Chinese state-media reports quoted the bureau as saying the case remained under investigation and would continue to be pursued.
Later attention
The case remained prominent decades later. In 2021, Diao's family brought a civil claim against Nanjing University concerning its alleged duty of care. That civil dispute did not identify the killer and should not be confused with the criminal investigation.
Modern reporting has revisited the case in the context of advances in forensic science and other Chinese cold cases solved through DNA. As of the verified sources used for this file, however, no arrest or charge has resolved Diao's murder.
Timeline
January 10, 1996: Diao leaves her Nanjing University dormitory and disappears.
January 19, 1996: the first remains are discovered in Nanjing; further remains are recovered from additional locations.
1996: police conduct a major investigation, but no perpetrator is identified.
January 2016: China's Ministry of Public Security Criminal Investigation Bureau says the case remains under investigation and rejects claims that authorities must abandon it because of a limitation period.
2021: Diao's family pursues a civil claim involving Nanjing University; the criminal case remains unresolved.
Current status
The murder is classified as unsolved. No person has been convicted or publicly established by a court as Diao Aiqing's killer. The responsible editorial approach is therefore to preserve the case as a cold case and exclude unsupported suspect theories.
Sources
- Xinhua — Ministry of Public Security response that the case remained under investigation, January 21, 2016
- Xinhua / The Beijing News — family history and 20-year case review, January 30, 2016
- South China Morning Post — 2021 cold-case and family civil action report
- China.org.cn — unresolved-case summary, September 8, 2016