I attended a memorial service last month for victims of the Nanking massacre, held at the Hong Kong government offices in Admiralty. Such occasions are solemn reminders of history’s darkest moments, forcing us to pause and reflect on the scale of the tragedy that unfolded after the city was seized on December 13, 1937, and the broader suffering inflicted on China during World War II. Government figures estimate that military and civilian casualties exceeded 35 million, with 21 million lives...