徐 is a top-15 Chinese surname.
敏俊 ('quick-witted and handsome') is a flattering two-character given name —
敏 'sharp, alert' and
俊 'handsome, talented.' The combination is also a common Chinese rendering of Korean Seo Min-joon (서민준), since Korean 민준 is the year-after-year top boys' given name and maps directly to Hanja
敏俊.
