貴幹

(polite) your business / what brings you?

expensive / noble / precious / (honorific) your

tree trunk / main part of sth / to manage / to work / to do / capable / cadre / to kill (slang) / to fuck (vulgar) / (coll.) pissed off / annoyed

What (noble errand) brings you here? / May I help you? / What can I do for you?