Ka kammala wannan magana: A shekara ta 2006, ta lashe lambar zinare ta farko a duniya a gasar zakarun duniya ta 18 a Judo a Suwon, Koriya ta Kudu. Jeong ya kuma lashe lambar tagulla a cikin nau'in -78 kg a gasar
Gasar Zakarun Duniya ta Judo ta 2007, lambar azurfa a cikin nau'in nauyi iri ɗaya a Gasar Zakarun Asiya ta Judo ta 2007, da lambar tagulla a Wasannin Olympics na bazara na 2008.