During World War II, five different Chinese people fight their way through Japanese Air Force attacks to protect an important military machine in Chongqing, 1940.During World War II, five different Chinese people fight their way through Japanese Air Force attacks to protect an important military machine in Chongqing, 1940.During World War II, five different Chinese people fight their way through Japanese Air Force attacks to protect an important military machine in Chongqing, 1940.