改换门庭

改換門庭
gǎihuànméntíng
  1. to improve one's family's social status by moving up in the world
  2. to switch one's allegiance to a new patron

CEDICT

改变门第出身，以提高身分地位。《三侠五义．第二回》：「倘上天怜念，得个一官半职，一来改换门庭，二来省受那赃官污吏的闷气。」也作「改换门闾」。

重編國語辭典

Entry Composition

1 改换 gǎihuàn
  1. to change (sth)
  2. to alter (sth)
  3. to change over (to sth else)
2 门庭 méntíng
  1. (literary, figurative) family status; family
  2. (literary, literally) front door and front yard
  3. family status; family
  4. front door and front yard