 Ramba uchiverenga ndima iyi - Muna 2007, Jeon akaita mutambo waLee Chang-dong unonzi Secret Sunshine, uyo wakaita kuti azivikanwe munyika dzakawanda. Kuenzanisa kwake kwakashata uye kusina kutya kwamai vari chirikadzi avo vanorwisana kurongazve upenyu hwavo pashure pokufa kunosuruvarisa kwomurume wavo nomwanakomana vakagamuchira rumbidzo yenyika yose. Kunyange zvazvo firimu racho pacharo, iro rakatanga pa60th Cannes Film Festival, yakaratidza kuongororwa kwakasiyana-siyana kubva kuvatsoropodzi vepasi rose, kuita kwaJeon kwakakurudzirwa pasi rose, uye akasarudzwa semutambi wepamusoro weCannes jury, achimuita wekutanga weKorea akambogamuchira mubairo wekuita paCannes. Akakundawo Best Performance by an Actress pa 1st Asia Pacific Screen Awards. Achitevera kukwira kweCannes kukunda, Jeon akaenderera mberi nekutsvaira mibairo yemumba, kuhwina Best Actress pamitambo mizhinji yemubairo wemafirimu senge 28th Blue Dragon Film Awards. Mukucherechedza mupiro wake mukusimudzira indasitiri yemamuvhi yekuKorea, akaremekedzwa neOkgwan Order yeCultural Merit nebazi rezvetsika, mitambo uye kushanya uye mubairo weSpecial Achievement pa44th Grand Bell Awards. 