迷頭迷腦 (mai4 tau4 mai4 nou5) — to immerse oneself in doing something and neglect all other things in Cantonese
maiˎ₄迷tauˎ₄頭maiˎ₄迷nouˏ₅腦简 迷头迷脑
Mandarin Pinyin: mi2 tou2 mi2 nao3
Meaning of 迷頭迷腦
nounto immerse oneself in doing something and neglect all other things