一鳴驚人

to amaze the world with a single brilliant feat (idiom); an overnight celebrity

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

to cry (of birds, animals and insects) / to make a sound / to voice (one's gratitude, grievance etc)

to startle / to be frightened / to be scared / alarm

astonishing

person; people / CL:個|个[ge4],位[wei4]