tuō tāi huàn gǔ

ㄊㄨㄛㄊㄞㄏㄨㄢˋ ㄍㄨˇ

Idiom

1to turn over a new leaf

2fig. to change wholly

3to create from other material (story, artwork etc)

4to shed one's mortal body and exchange one's bones (idiom); born again Daoist