斷鶴續鳧

断鹤续凫
duànhèxùfú
  1. (figurative) to go against nature
  2. to go against nature

Wiktionary

Entry Composition

1 斷 duàn
  1. to break
  2. to snap
  3. to cut off
  4. to give up or abstain from sth
  5. to judge
  6. (usu. used in the negative) absolutely
  7. definitely
  8. decidedly
2 鶴 hè crane
3 續 xù
  1. to continue
  2. to replenish
4 鳧 fú
  1. mallard
  2. Anas platyrhyncha