1994 Eleven Chinese athletes, including seven swimmers, test positive for steroids after arriving in Hiroshima for the Asian Games.

1998 Yuan Yuan, a Chinese swimmer, is arrested at Sydney airport after customs officials seize 13 vials of human growth hormone from her kitbag as she travels to the World Championships in Perth.

2000 Several young distance runners and two top swimmers are among more than 20 athletes dropped by China on the eve of the Olympic Games in Sydney.