張冠李戴 [张－－－]

Jyutping zoeng1 gun1 lei5 daai3
Pinyin zhāng guān lǐ dài

Definitions (CC-CEDICT)
  1. lit. to put Zhang's hat on Li's head
  2. to attribute sth to the wrong person (idiom)
  3. to confuse one thing with another
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. phrase, figuratively, idiomatic
    to confuse a person with someone else; to confuse one thing with another