Place it at the point where a chat goes unanswered, after a WhatsApp message sound and before the reply finally arrives, so it becomes the next beat in the conversation. Follow it with a laugh afterwards, keeping the exchange centred on the unanswered message and the wait for a reply.
關於此聲音
This 10-second voice clip delivers the line 'At once you must answer me' in a firm, insistent tone, with each word pressed for urgency. It creates a tense, confrontational feeling, like being put on the spot by someone who will not wait for a reply.