<prompt> Bhala ukuqhubeka kwalesi sigaba - USung Si-Bak Hangul, Hanja, ; owazalwa ngoFebhuwari 18, 1987, eSeoul, eNingizimu Korea ungumdlali we-speed skater waseNingizimu Korea. Emidlalweni ye-Winter Universiade ka-2007, wanqoba yonke imiqhudelwano emihlanu yokushushuluza ngejubane emidlalweni emifushane. USung unqobe imijaho engaphezu kwengu-20 yeNdebe yoMhlaba futhi wathola iziqu ezimbili zeNdebe yoMhlaba, ngaphezu kokushushuluza emaqenjini e-World Championship 5000 m relay team ngo-2007 nango-2008. Wafanelekela ama-Olympic asebusika ka-2010 eVancouver, eBritish Columbia, eCanada. USung wayemncintiswaneni wamamedali owawuholela emjahweni wokugcina wamamitha angu-1500  <response>: lapho, lapho ukushayisana phakathi kwakhe nomunye owayeseqenjini lakhe kwaholela ekubeni afike endaweni yesihlanu. 