走马上任 zǒu mǎ shàng rèn

DEFINITIONS

  1. to ride to take up an official appointment (idiom); to take on a job with alacrity
  2. to undertake a task

CHARACTERS

走 zǒu walk, go on foot; run; leave
马 mǎ horse; surname; KangXi radical 187
上 shàng top; superior, highest; go up, send up
任 rèn trust to, rely on, appoint; to bear, duty, office; allow