Place it at the turning point of a confrontation edit, after Sudden Suspense sets up the scene and before Oh My God Wow answers it, letting the line carry the scene change on its own.
關於此聲音
This is a short spoken line, just over six seconds long, in which a voice tells Mark to kill everyone. The delivery is blunt and unflinching, with no softening around the order. It feels chilling and darkly funny at the same time, because the instruction is so extreme and so casually direct. That contrast is what makes the clip stick.