關……鬼事 [关－－－－]

Jyutping gwaan1 … … gwai2 si6
Pinyin guān …… guǐ shì

Definitions (Wiktionary)
  1. phrase, colloquial, mildly, vulgar
    to be none of someone's business; to have damn all to do with someone
    (syn.) 关……屁事, 關……屁事