. "Ryu Je-hong" . . "Ryujehong" . . . . . "ryujehong" . . "Ryu \"ryujehong\" Je-hong" . . . "ryujehong (Ryu Je-hong)" . "Ryujehong" . . "Ryu \\\"ryujehong\\\" Je-hong" . . . . . . . . . . . "1991" . . . .