|Representing South Korea|
|1992 Barcelona||-71 kg|
|1993 Hamilton||-71 kg|
|1991 Barcelona||-71 kg|
|1990 Beijing||-71 kg|
|1994 Hiroshima||-71 kg|
|1991 Osaka||-71 kg|
|Revised Romanization||Jeong Hun|
Chung was the World Champion at 71 kg in 1993. He won a bronze medal in the 1991 World Championships.
Chung represented South Korea in the 1992 Olympic Games, winning bronze in the Lightweight division. In the semifinal, he lost to Hungarian Bertalan Hajtós. Next year, Chung went up against the Hungarian judoka again in the final at the World Championship and avenged the loss by decision.
Chung retired from competitive judo after winning his second Asian Game gold medal in 1994.
Chung has been serving as a judo instructor and professor for Yong-In University and the head coach of the South Korean national judo team.