不動聲色 bù dòng shēng sè

DEFINITIONS

  1. not a word or movement (idiom); remaining calm and collected
  2. not batting an eyelid

CHARACTERS

不 bù
HSK 1
no, not; un-; negative prefix
動 dòng move, happen; movement, action
聲 shēng sound, voice, noise; tone; music
色 sè
HSK 2
color, tint, hue, shade; form, body; beauty, desire for beauty