借屍還魂 [－尸还－]

Jyutping ze3 si1 waan4 wan4
Pinyin jiè shī huán hún

Definitions (CC-CEDICT)
  1. lit. reincarnated in sb else's body (idiom); fig. a discarded or discredited idea returns in another guise
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. phrase, figuratively, idiomatic
    a discarded or discredited idea returns in another guise