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It can't get any tougher than this. The most difficult course in Castle Attack history, the mountainous terrain of Chungju Namsanseong Fortress that even the production team was forced to diet, the Mongol army was severely defeated by Kim Yoon-hoo during the second Mongol invasion, and was blocked by Kim Yoon-hoo during the fifth invasion, so at this point, it's a Mongol killer!! The charm of Chungju Namsanseong Fortress, which even has a pond large enough to be preserved to this day despite its rough terrain. #NextEpisode #Curious #Dizzy