Dossier concerning Chen Maoyin (陳毛因), a 49-year-old man from Shanghai, who died at his residence in Pudong on 28 May 1944 from a self-inflicted throat wound. Police documentation records that Chen had suffered from a prolonged illness and, because his condition had failed to improve, developed thoughts of suicide. At approximately 8 p.m. he used a razor (剃頭刀) to cut his throat. The incident occurred at 33 Chenjiazhai (陳家宅三十三號), Pudong. His brother, Chen Quangui (陳全貴), and other persons were questioned concerning Chen's illness, family circumstances, and the events surrounding his death.

The file contains police reports, interrogation records, correspondence with the prosecutorial authorities, a formal inquest conducted on 30 May 1944, and a detailed medico-legal examination of the corpse. The examination identifies the deceased as 陳毛因, aged 49 and native of Shanghai, and documents the throat wound and other physical findings. Because the medico-legal examination established death from a knife or razor wound but could not by itself determine whether the wound had been self-inflicted or inflicted by another person, the prosecutorial authorities requested further investigation into whether the death constituted suicide or homicide. Subsequent police inquiry supported the original account that Chen had taken his own life and found no evidence establishing homicide.