Place it just before the next scene begins, after the joke has landed, then follow it with Imperial March, or cut to I'm Batman for a comic-book clash between hero and villain.
關於此聲音
This is a short, roughly five-second burst of theatrical, ghostly laughter in the style of the Joker, delivered by a single voice that shifts from unsettling to chaotic. It feels sinister and unhinged, turning a normal moment into something menacing and darkly comic, as if the person laughing has just snapped.