The creative team behind the war-themed film Evil Unbound lays white chrysanthemums at the monument honoring victims of the biological warfare in Quzhou. [Photo/Tide News]

The creative team behind the war-themed film Evil Unbound visited Quzhou in East China's Zhejiang province on Sept 20, listening to the echoes of past wounds that remain unhealed.

The film revisits the horrific World War II-era human experiments conducted by Japan's notorious biological and chemical warfare unit 731. It was released nationally on Sept 18.

During the Chinese People's War of Resistance against Japanese Aggression (1931–45), Quzhou was one of the regions in southern China most severely affected by biological and chemical warfare.

In 1940, Unit 731 began biological and chemical attacks on the city by using planes to drop plague-infested fleas. Over the next eight years, plagues, cholera, typhoid, and anthrax outbreaks devastated the area, affecting over 300,000 people and resulting in over 50,000 deaths.

On Sept 20, the team visited the exhibition hall of evidences of crime committed by Unit 731 in Quzhou. They laid white chrysanthemums at the monument there honoring victims of the biological warfare.

Jin Chengmin, director of the Exhibition Hall of Evidences of Crime Committed by Unit 731 of the Japanese Imperial Army in Harbin, Heilongjiang province and historical consultant for the film, noted Quzhou's significant contribution to the victory against fascism despite the immense suffering.