Place it at the very end of a farewell edit, after the final image or spoken goodbye, and let it close the sequence on its own. For a longer closing sequence, open with Hello Darkness My Old Friend, then follow it with this clip as the last word.
关于此声音
This is a 15-second musical farewell, a brief song-like passage built for a closing moment. It carries a wistful, bittersweet feeling, tender rather than dramatic, with the quiet ache of a goodbye that has already been decided. The melody lingers just long enough to mark the moment before it fades.