At the 2006 Asian Games he beat Mongolia's
Enkhbatyn Badar-Uugan but lost against
Joan Tipon of the Philippines. At the World Championships in 2007 he lost early to Ukrainian Maxim Tretyak. At the second Olympic qualifier for the
2008 Summer Olympics, he lost to
Hurshid Tajibayev but beat Dinesh Kumara Mahju for the all-important third place to qualify for the Beijing Olympics. He lost his first Olympic match to
Héctor Manzanilla 6:17. Having moved up to the lightweight category, Han qualified for the 2012 Summer Olympics. He beat
Mohamed Ramadan,
Vazgen Safaryants,
Fazliddin Gaibnazarov and
Evaldas Petrauskas before losing to
Vasyl Lomachenko in the final. == References ==