彈指一揮間

in a flash (idiom)

crossball / bullet / shot / shell / ball

to pluck (a string) / to play (a string instrument) / to spring or leap / to shoot (e.g. with a catapult) / (of cotton) to fluff or tease / to flick / to flip / to accuse / to impeach / elastic (of materials)

a snap of the fingers / a short moment / in a flash / in the twinkling of an eye

to snap one's fingers / (fig.) in a flash; in an instant

finger / to point at or to / to indicate or refer to / to depend on / to count on / (of hair) to stand on end

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 wave / to brandish / to command / to conduct / to scatter / to disperse

between / among / within a definite time or space / room / section of a room or lateral space between two pairs of pillars / classifier for rooms

gap / to separate / to thin out (seedlings) / to sow discontent