earth-shaking; world-shaking
A yojijukugo used for events or changes so momentous they seem to shake heaven and earth; often appears in formal or literary descriptions of historic upheavals.
The invention was reported around the world as earth-shaking news.
An earth-shaking event shook the nation.
Similar yojijukugo with the same literal meaning; 震天動地 is the more common order.
Also means 'earth-shaking', but 驚天動地 emphasizes astonishment (驚) rather than shaking (震).
From the Chinese expression 震天動地, literally “shake heaven and move earth,” for something overwhelmingly powerful or momentous.