草率收兵

cǎoshuàishōubīng
  1. to work vaguely then retreat (idiom); sloppy and half-hearted
  2. half-baked

CEDICT

to hastily declare the matter closed; to wind up in a hurry

Wiktionary

隨隨便便就收了兵。比喻做事馬虎，有頭無尾。

重編國語辭典

Entry Composition

1 草率 cǎoshuài
  1. careless
  2. negligent
  3. sloppy
  4. not serious
2 收兵 shōubīng
  1. to retreat
  2. to withdraw troops
  3. to recall troops
  4. fig. to finish work
  5. to wind up
  6. to call it a day
  7. used with negatives: the task is far from over

Related entries

草草收兵 cǎocǎoshōubīng
  1. to work vaguely then retreat (idiom); sloppy and half-hearted
  2. half-baked
半桶水 bàntǒngshuǐ
  1. (coll.) (of one's skills, knowledge etc) limited
  2. superficial
  3. half-baked
  4. sb with a smattering of knowledge (of sth)
  5. dabbler