Place this clip right after the reveal in your edit as the main reaction beat. Build into it with the sudden suspense sound, then follow it with the oh my god wow button for a second, English-language reaction from another voice.
關於此聲音
This is a six-second voice clip of a person stretching out the Portuguese exclamation 'ai, meu Deus', the equivalent of oh my god, in a high, drawn-out wail. It gives a listener a mix of shock and comic panic, like the reaction is far bigger than the moment that caused it.