秋风送爽，树叶飘落，思绪渐远，心情如歌。交换配偶

　　This is an artsy film that was funded by the National Film Board of Canada, a governmental agency that provides money for animators making short films. Some of the films produced with their help are more commercially oriented and some, like this film, are more artsy and may not be especially pleasing to the general public. OP HOP/HOP OP consists of 24 different geometric images... (展开全部)