Italian explorer rescues the daughter of the Mongol leader Kublai Khan, meets a hermit who has invented gunpowder and builds a cannon.

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Main Cast: Rory Calhoun, Yoko Tani, Camillo Pilotto, Pierre Cressoy, Michael Chow, Thien-Huong, Ernest Van-Mohr, Ada Passeri, Claudio Undari

Directors: Hugo Fregonese, Piero Pierotti

Writers: Oreste Biancoli, Duccio Tessari, Eliana De Sabata, Antoinette Pellevant, Ennio De Concini, Piero Pierotti

Editor: Ornella Micheli

Cinematographer: Riccardo Pallottini

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