To remain silent for a long time, only to amaze everyone with one's first action or achievement; to achieve astonishing success after a period of obscurity.
他平时不显山露水，但在这次比赛中，不鸣则已，一鸣惊人，获得了冠军。
He usually doesn't show off, but in this competition, he remained silent until his first display, astonishing everyone by winning the championship.
Era:
Ancient
Frequency:
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