冒名頂替 mào míng dǐng tì

DEFINITIONS

  1. to assume sb's name and take his place (idiom); to impersonate
  2. to pose under a false name

CHARACTERS

冒 mào risk, brave, dare
名 míng name, rank, title, position
頂 dǐng top, peak; carry on head; very
替 tì change, replace, substitute for