Li competed at the 1975 World Judo Championships in Vienna.[2] He competed in the 1981 Asian Judo Championships in Jakarta.[2] While a member of the club Hong Kong Judo Kan, Li participated in the 1983 Pacific Rim Judo Championships at Queen Elizabeth Stadium.[3] He was defeated in every match he took part in.[4] He competed in the men's half-middleweight event at the 1984 Summer Olympics.[1] That year, he was a member of the Hongkong Judo Club in 1984 and an employee of the Government of Hong Kong.[2]
Li coached the four Hong Kong team members who competed in judo at the 1986 Asian Games.[5][6] He was the coach of the six Hong Kong team members who competed in judo at the 1990 Asian Games.[7] Li coached the four Hong team members who competed at the 1991 World Judo Championships.[8] He was the coach of the five team members who competed at the 1993 East Asian Games.[9] Li served as the coach and manager of the four Hong Kong team members who competed in judo at the 1994 Asian Games.[10]
Li served on the executive committee of the Hong Kong Judo Association (HKJA) in 1993 and as a vice president in an opposition group, Hongkong Judo Federation, that sought to take over the HKJA.[11][12][13] In 1994, he was elected as the deputy chairman of the HKJA's executive committee.[14] As vice president of the association in 1995, he defended the association's limiting its national championship players to a maximum age of 30, stating, "The average player over 30 is usually, and I stress, usually, not as good as those in their early 20s."[15] Li was the coach of Wu Ching Hui, the sole Hong Kong athlete who competed in judo at the 1996 Summer Olympics.[16] He coached the four Hong Kong athletes who competed in judo at the 1997 East Asian Games.[17] Li was the coach for the Hong Kong judoka who competed in judo at the 2001 East Asian Games.[18][19]