Unit 731 china                                                                  The School of Shadows: How a Quiet Negeri Sembilan Institution Became Japan's Secret Bioweapons Lab Behind the colonial-era walls of a school in Kuala Pilah, a dark secret lay hidden for decades. While students studied in one part of the building, Japanese doctors and veterinarians were conducting experiments with plague-infested rats and rabbits in another—part of a sinister network that stretched from Tokyo to Singapore, designed to weaponise the bubonic plague. This is the story of the Tuanku Muhammad School, the forgotten bioweapons lab of Malaya. The Mask of Education During the Japanese occupation of Malaya (1942-1945), the  Tuanku Muhammad School  in Kuala Pilah, Negeri Sembilan, served a dual purpose . Officially, it was ...