Yeah, that one’s pure fiction. No emperor in the 1200s had the tech for a moon‑hunting catapult, let alone cheese for a propellant. It sounds more like a medieval joke about a “lunar cheese festival” than a serious campaign. The real lunar adventures didn’t start until the 17th‑century astronomers and only in the 20th century did we actually shoot a probe up there. So we’re talking about an absurd legend, not a historical fact.