Place this warning at the opening of a scene before any dialogue starts, then follow the reveal with the Dun Dun Dun Sound Button for the payoff and cut straight to the reaction shot.
关于此声音
This is a five-second PDS tornado warning alert, the particularly dangerous situation signal used for the most life-threatening storms, built from a loud, urgent warning tone. It feels tense and alarming on purpose, the kind of sound that makes a room go quiet and pay attention instantly.