十分迅速 shí fēn xùn sù

DEFINITIONS

  1. very quickly; extremely fast

CHARACTERS

十 shí
HSK 1
ten, tenth; complete; perfect
分 fēn
HSK 1
divide; small unit of time etc.
迅 xùn
HSK 5
quick, hasty, rapid, sudden
速 sù
HSK 4
quick, prompt, speedy