South Korea's KOSPI index opened down 0.38%, SK Hynix fell 6.35%

According to Gate data, South Korea's KOSPI index opened down 0.38% at 6,659.25 points, SK Hynix fell 6.35%, and Samsung Electronics fell 4.05%; the Nikkei 225 index opened 0.48% lower at 63,190.37 points.