 In 1986, he won the Japan Open and the Hong Kong Open for the second straight year, and also helped China to regain the Thomas Cup (men's world team championship) from Indonesia by winning key matches.In the late 80s he dominated international singles play, winning the World Championships over Morten Frost in 1987 and over young Ardy Wiranata in 1989.In 1988 he also won the Olympic exhibition event in Seoul (badminton became an official Olympic sport at the next games in Barcelona).