Place it right after an overreaction, such as Oh My God Wow, so it answers the panic directly, then follow it with No No Wait Wait if the argument keeps going. Keep it as the turning point in the middle of a short reaction sequence, not at the very start.
關於此聲音
This is a short spoken French line, lasting about 1.7 seconds, in which a voice tells someone to calm their pompom. The delivery is light and teasing rather than angry, so it lands as a playful nudge to slow down and take a breath. It works as a quick, good-humoured way to defuse an overexcited moment.