鳥盡弓藏 [鸟尽－－]

Jyutping niu5 zeon6 gung1 cong4
Pinyin niǎo jìn gōng cáng

Definitions (CC-CEDICT)
  1. lit. the birds are over, the bow is put away (idiom); fig. to get rid of sb once he has served his purpose
Definitions (Wiktionary)
  1. proverb
    to cast somebody or something aside when the purpose has been served