A Seoul court on Thursday sentenced a Chinese national to 20 years in prison for leading a hacking scheme targeting K-pop group BTS' member Jungkook and South Korean business executives. The Seoul Central District Court handed down the sentence to the Chinese national, surnamed Chun, on charges of fraud and violating the information network act, in connection with the theft of more than 38 billion won ($27.2 million) from the victims. "(Chun) ta…