Place it at the very end of the edit, after the last line and the final visual, so it closes the piece. Before it, use an app tap to show the button being pressed, and after a failed attempt, put a game show buzzer first, then let this clip finish the scene.
关于此声音
This is a short five-second electronic shutdown chime, a brief series of soft descending tones that signal a device switching off. It feels calm and final, with a small touch of humour when it follows a joke that has run its course. The clean, familiar sound makes an ending feel complete without adding drama or noise.