As part of national commemorations for the 88th anniversary of the Lugou Bridge Incident, recognized as the start of Japan's full-scale invasion of China, the Exhibition Hall of Evidence of Crimes Committed by Unit 731 of the Japanese Imperial Army on July 7 unveiled, for the first time in China, a complete video testimony from a former Unit 731 member.

The 83-minute testimony, recorded in August 1991 during a peace exhibition in Iida City, Japan, features Masakuni Kurumizawa, an assistant technician in Unit 731, who openly confessed to heinous experimental war crimes, including human dissections, live experiments and biological warfare targeting civilians and prisoners.