 It depicted the brutal attack on China by Japan as well as atrocities such as the Rape of Nanking, which helped galvanize Chinese resistance to Japanese occupation.The film also depicted the building of the Burma Road, which helped keep China in the war as the Japanese had occupied most Chinese ports The film ridiculed the Japanese anti-Western propaganda of "co-prosperity" and "co-existence" by reciting these themes over scenes of Japanese atrocities, it was the most stark, "Good vs Evil" film of the "Why We Fight" series.Pearl Buck, a famous author of books on China, warned Americans to take seriously the appeal of the Japanese Greater East Asia Co-Prosperity Sphere to the people of China and other Asian nations.