Shaft Diary

[Instructions for archiving physical evidence of Lin's disappearance on August 17, 2025 by Ganjingzi Branch of Dalian Public Security Bureau] The core evidence in this case is 26 diaries, which were seized in December 2025 from a sealed, rust-proof iron cabinet on the first floor of an abandoned medical institution to be demolished in Ganjingzi District, this city. After forensic handwriting appraisal, the diary was 100% handwritten by the missing person Lin (male, born in 1984, disappeared at the No. 73 Civil Air Defense Project on August 17, 2025). The writing time spanned from August 18, 2000 to August 17, 2025, and there was no trace of the involvement of a second person. The early stage of the diary contains daily records of Lin's schooling and employment; in the middle and later stages, there are a large number of inconsistent memory expressions, dissociative unconscious writing, thick black ink content, and micro-writing on the margins, which are related to the unsolved case of one death and one missing person in the No. 73 Civil air defense project in 2000, and 7 unsolved accidental deaths in the past 25 years. The physical evidence has been sealed and stored, the authenticity of the content cannot be verified, and the area involved has been closed and controlled.