Place it as the closing beat of a farewell edit, after the final spoken goodbye and any on-screen farewell text, with Dun Dun Dun just before it to add a brief lead-in before the send-off lands.
關於此聲音
This is a roughly seven-second spoken farewell built around the repeated nonsense phrase in its title, delivered as a quick send-off rather than a full speech. It feels oddly cheerful and deliberately silly, like a friend making a routine goodbye stranger on purpose. The humour comes from pairing a familiar farewell word with nonsense syllables.