lightning; CL:道[dao4]

to get out of the way

to glint; to glitter; to sparkle; to radiate

brilliant; shiny; a flare; to glisten; to twinkle

flash

flickering; sparkling; glistening; glittering

to depart as quick as a flash; flash mob

to glitter; to gleam; to sparkle; to flash

to wink; to blink

(coll.) (of a couple) to display affection in public or by posting photos on social media