He is best known as the owner of
Sea The Stars, the World Champion thoroughbred racehorse who completed an unbeaten three-year-old career by winning the
2000 Guineas,
The Derby and the
Prix de l'Arc de Triomphe in the same year, the only horse to do so in the history of thoroughbred racing. Sea The Stars also won the
Eclipse Stakes, the
International Stakes and the
Irish Champion Stakes in the same year, all major international races. Christopher Tsui is the youngest known owner to have won any of these races. Sea The Stars was bred by Sunderland Holding Inc, the Tsui family's breeding operation. Founded by Christopher's father,
David Tsui began buying horses in the early 1990s and raced a stable in France. David Tsui most famously owned 1993 Arc winner
Urban Sea who is the dam of Sea The Stars and who died several years ago. However, in an interview at
Epsom Downs Racecourse, Christopher Tsui said that his mother, Ling, a special adviser to the Ministry of Labour for the
Chinese Government, studies
pedigrees and breeding patterns and does all the research that has led to the family's racing success. Since becoming involved in the sport, Sunderland Holding Inc has bred a number of successful horses including
Galileo, Black Sam Bellamy, All Too Beautiful, Melikah, Cherry Hinton,
My Typhoon, and Urban Ocean. ==Awards==