(expression)
you're welcome; don’t mention it
不客气 (bú kè qì) literally means 'no' or 'dont' (不 bú) 'polite' or 'be polite' (客气 kè qì), but can also be used as an expression in response to a show of thanks like the English 'you're welcome' meaning more literally 'no need to be so polite'.
(expression) (Formal) welcome
"Huānyíng guanglín is best thought of as a set phrase and is used by clerks and shopkeepers to greet customers and guests upon entering their businesses. It can also be followed by a location, meaning "welcome to...".