The duet speaks of the infinite but tragic like involving Chang'e and Houyi, that are depending on the Chinese myth of the moon goddess, on which the film is based on. Viewing it reminded me of your scene in Singing while in the Rain, in which the audience is in https://alwaysandforever16060.blogrelation.com/43489103/the-fact-about-always-and-forever-mine-that-no-one-is-suggesting