Core Viewpoint - The article highlights the life and contributions of Luo Jin, the real-life inspiration for the character Su Liuchang in the film "Nanjing Photo Studio," who risked his life to preserve evidence of the Nanjing Massacre, ultimately becoming a symbol of historical memory and resilience [1][2]. Group 1: Historical Context - In December 1937, during the Nanjing Massacre, 14-year-old Luo Jin worked as an apprentice at a photo studio and discovered horrific images of the atrocities committed by Japanese soldiers [3][4]. - Luo Jin secretly preserved over 30 photographs documenting the massacre, despite facing threats from Japanese officers [4][5]. Group 2: Preservation of Evidence - Luo Jin created an album with 16 selected photographs, which later became crucial evidence in the prosecution of Japanese war criminals after World War II [5][6]. - The album was lost for a time but was eventually recovered and submitted as evidence, leading to the conviction of key perpetrators [6][7]. Group 3: Later Life and Recognition - After years of anonymity, Luo Jin's identity as the keeper of the "blood evidence" was revealed in the 1990s, leading to public recognition of his contributions [7][8]. - Luo Jin became a historical educator, sharing his experiences in schools and writing his memoirs to ensure the memory of the Nanjing Massacre was preserved for future generations [9][10]. Group 4: Cultural Impact - The film "Nanjing Photo Studio," released in 2025, is based on Luo Jin's life and has resonated deeply with audiences, emphasizing the importance of remembering historical atrocities [12][13]. - The film's narrative focuses on ordinary heroes, reflecting a broader trend in Chinese cinema to portray significant historical events through the lens of individual experiences [14].