脫骨換胎 [脱－换－]

Jyutping tyut3 gwat1 wun6 toi1
Pinyin tuō gǔ huàn tāi

Definitions (CC-CEDICT)
  1. to shed one's mortal body and exchange one's bones (idiom); born again Daoist
  2. to turn over a new leaf
  3. fig. to change wholly