Simplify the following text for a Grade 6 native English-speaking person.
Original: Seol Ki-Hyeon or Seol Ki-Hyun ( ; born 8 January 1979 in Jeongseon , Gangwon ) is a South Korean professional footballer who plays for Ulsan Hyundai as a winger or striker .
Simplified: Seol Ki-Hyeon ( born 8 January 1979 ) is a South Korean football player .