Desc: Jigjiluteu; tela inkogeunita: Directed by Kwang-hoon Woo. With Ariane Desgagnes-Leclerc. Tracking the links between the Gutenberg and Goryeo metal types, this documentary finds the "Pope's Letter to King of Goryeo" in the Vatican archives. Could this be the final proof that the Goryeos created the world's first printing press?