SURVIVAL AT ALL COSTS.

The article discusses the historical context of pre-modern Korea's challenges in maintaining a balance between China and Japan. It explores the Goryeo dynasty's transition to the Joseon dynasty, the 16th-century Imjin War against Japan, the role of Admiral Yi Sun-sin in naval battles, and the military technology used by the Joseon kingdom, including the formidable turtle ships. It also mentions the enduring theme of defending Korea against external threats throughout its history.