不管是谁 bù guǎn shì shéi

DEFINITIONS

  1. regardless of who; no matter who

CHARACTERS

不 bù no, not; un-; negative prefix
管 guǎn pipe, tube, duct; woodwind music
是 shì indeed, yes, right; to be; demonstrative pronoun, this, that
谁 shéi who? whom? whose? anyone?