Place it at the moment someone arrives, then follow it with a shocked reaction sound so the scene moves from the alert to the response. A short reaction such as Bruh works after the call, while Scream Meme fits a bigger entrance.
關於此聲音
This is a short, urgent voice clip lasting about 2.7 seconds, built around someone calling out the name Jumjum and then shouting about the door. The delivery is loud, abrupt and attention-grabbing, with a playful sense of panic that makes it feel like an interruption happening right in front of you. It lands best as a sudden alert rather than a calm announcement.