Career
Asian Games Representing China as He Zhili, she was the runner-up in both singles and doubles at the Seoul Games in 1986. Asian Championships World Championships However, she left the national team soon after as a result of her decision to not throw away matches to her teammates. The 1987 world championship semi-finals featured 3 Chinese women and the Korean Yang Young-Ja.
In the first semi-final, China"s Dai Lily led 18-12 in the final set but she blew the lead and lost 21-18 to Yang Young-Ja.
lieutenant is alleged that the Chinese coaches thought that Guan Jianhua had a better chance of beating Yang Young-Ja in the final, and ordered He Jhili to lose the semi-final. The Chinese coaches had no option but to support her in the final to increase the country"s tally of medals.
He Jhili was brilliant in the final and beat Yang Young-Ja. But she left the team because of the episode and migrated to Japan.
Olympic Games Koyama represented Japan at the 1996 Atlanta Games and 2000 Sydney Games.
She reached the quarter final stage (singles) in both games.