The 10 million yuan (US$ 1.42 million) film sponsored by the Toronto chapter of the Association for Learning and Preserving the History of World War II (ALPHA) and the Hong Kong-based Dadi Entertainment, focused on the endeavors of Chang investigating the truth of the Nanjing massacre and recounting the atrocity in her book "The Rape of Nanking" (the old name of Nanjing).
The film's box office receipts were to be donated to international organizations such as ALPHA.
On December 13, 1937, the invading Japanese army occupied Nanjing and launched a six-week massacre. Chinese records show more than 300,000people, not only disarmed soldiers but also civilians, were murdered.
"Past experience, if not forgotten, is a guide for the future, " said She Ziqing, another Nanjing Massacre survivor visiting the memorial hall. "We hope that both sides in the war draw lesson from it, and that China and Japan could be friends forever."