Ku qor sii wadida faqradan - Sannadkii 2006, waxay ku guuleysatay billaddeeda dahabka ah ee caalamiga ah tartankii 18-aad ee Judo ee Jaamacadaha Adduunka ee Suwon, South Korea. Jeong wuxuu sidoo kale ku guuleystay billad naxaas ah qaybta -78 kg ee 2007 World Judo Championships
, oo ah billad dahab ah isla miisaankii tartanka ee 2007 Asian Judo Championships, iyo billad naxaas ah oo ka socota Olombikada Xagaaga ee 2008.