Place it at the very start of an announcement segment, before the reveal, then follow it with the GTA V Notification Sound for a second alert, or swap in the Pop Sound Effect for a lighter version of the same opening.
關於此聲音
This is the short interface cue from Hearts of Iron IV that marks a new event window, a crisp mechanical pop followed by a bright, brief chime lasting just over two seconds. It feels urgent and official, like a bulletin demanding an immediate decision, and slightly comic when it interrupts something ordinary. In the game it announces important news, decisions and historical developments during play.