兹事体大 zī shì tǐ dà

DEFINITIONS

  1. this is no small thing (idiom)
  2. to have a serious matter at hand

CHARACTERS

兹 zī now, here; this; time, year
事 shì
HSK 2
affair, matter, business; to serve; accident, incident
体 tǐ
HSK 2
body; group, class, body, unit; inferior
大 dà
HSK 1
big, great, vast, large, high