脫胎換骨 [脱－换－]

Jyutping tyut3 toi1 wun6 gwat1
Pinyin tuō tāi huàn gǔ

Definitions (CC-CEDICT)

to shed one's mortal body and exchange one's bones (idiom); born again Daoist
to turn over a new leaf
fig. to change wholly
to create from other material (story, artwork etc)

Definitions (Wiktionary)

phrase, figuratively, idiomatic
to completely reform oneself
(syn.) 抽胎換骨, 抽胎换骨

Definitions (Kaifangcidian)

（沒有對應漢語詞彙）