Complex sentence: Yoon Sang-hyun (Hangul: 윤상현; hanja: 尹相鉉; born on September 21,1973) is a South Korean actor and singer, best known for his roles in "Queen of Housewives" and "Secret Garden".
Split into simpler sentences: Yoon Sang-hyun (Hangul: 윤상현, hanja: 尹相鉉) was born on 21 September 1973. He is a South Korean actor and singer best known for his roles in "Queen of Housewives" and "Secret Garden".