In the late winter of 1943, the cold wind in Wuchang County, Harbin was wrapped in snow particles and scraped through the black barbed wire fence of the "Manchuria Unit 731" like a knife. Inside the barbed wire fence, the windows of the white laboratory building are always covered with heavy curtains. Only the occasional heart-rending cry in the middle of the night will pierce the seemingly peaceful snow. That is the experimental subject known as "Ma Luda" who is experiencing the darkest atrocity in human history. This article uses the memories of survivor Zhou Mingshan (pseudonym) as clues to uncover the covered-up truth stained with blood and tears in the 731 unit experimental building. Every detail comes from the restoration of historical evidence, and every wailing is a warning to the world: never forget the suffering that happened on this land.
