민수 (Min-su) is one of the most frequent given names in Korean drama and textbook examples — the K-drama equivalent of an everyman 'John'. Mandarin renders it through the hanja
民秀 ('the people' + 'excellent/refined'), giving the natural Mandarin reading Mínxiù. Korean parents pick the hanja
民 +
秀 for the meaning 'outstanding among the people'.