Feng wrote the last movement for War. As the last "movement" of his six-part series War and Peace, Purple Day tells the story of the last moment of the Second World War. Soviet tanks broke through the Japanese defense line in Daxinganling, and rescued a surviving northeast fellow villager when passing through a concentration camp. The Soviet army sent him and a group of wounded people to the rear, but they mistakenly entered the Japanese defense zone halfway. After a scuffle, only He, a Soviet female lieutenant and a Japanese girl fled into the vast forest ... The idea of Purple Day was stored in Feng's mind for six years, and the argument was revised repeatedly. For this trilogy of War and Peace, Feng positioned it as a "good-looking high-quality movie". The title of the film Purple Sun implies that the sun is a symbol of human life. Once overshadowed by war, it will change color. Only when the war is eliminated will the bright red sun shine on the world again. The whole film music inherits the consistent style of Feng's films, which is magnificent and touching.

This album contains the theme songs of Feng's six major war movies: Meridian Flow, Beiyang Navy, Big Air Battle, red river valley, The Yellow River is lovelorn and Purple Day.