改換門庭 [－换门－]

Jyutping goi2 wun6 mun4 ting4
Pinyin gǎi huàn mén tíng

Definitions (CC-CEDICT)
  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
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）