The characters in the raw title are a Chinese onomatopoeia for a deep rolling rumble, the kind of sound used to suggest thunder, earthquakes or heavy machinery. Short rumble effects like this one are staples of meme and short-form video editing, where a single second of bass can sell a joke or a dramatic moment without any dialogue. Because it is so brief, it gets reused as a punctuation mark between clips, layered under transitions, impacts and reveals across gaming montages, fail compilations and reaction edits.