Lake Poyang: China's Largest Naval Battle Begins

Two rival Chinese warlords sent their fleets into Lake Poyang on August 30, 1363, beginning a three-day naval battle that dwarfed anything the Western world would see for centuries. An estimated 850,000 men fought across the largest freshwater lake in China, in a clash that determined who would overthrow the Mongol Yuan dynasty and rule the Middle Kingdom. The winner, Zhu Yuanzhang, would found the Ming dynasty. The loser, Chen Youliang, would die on the water. China in the 1360s was in chaos. The Yuan dynasty, established by the Mongols under Kublai Khan, had lost control of the south. Peasant rebellions, famine, and plague had shattered central authority, and regional warlords carved out territories across the Yangtze River valley. Chen Youliang controlled the middle Yangtze with a massive fleet of multi-deck tower ships, some reportedly carrying thousands of soldiers each. Zhu Yuanzhang, a former Buddhist monk and beggar turned rebel leader, held the lower Yangtze from his capital at Nanjing. Neither could consolidate power while the other survived. Chen sailed his fleet into Lake Poyang to besiege the strategic city of Nanchang, held by Zhu's forces. Zhu counterattacked with a fleet of smaller, more maneuverable vessels. The size disparity was dramatic: Chen's ships were enormous wooden fortresses chained together for stability, while Zhu's junks were light and fast. On the battle's third day, Zhu adopted a tactic that would have been familiar to followers of the Chibi battle centuries earlier: he loaded small boats with dry reeds and gunpowder, set them ablaze, and sent them into Chen's chained fleet. The fire ships ignited a conflagration that destroyed hundreds of vessels and killed tens of thousands of Chen's men. Chen himself was struck by a stray arrow and killed while attempting to retreat. The victory gave Zhu control of central China. Within five years, he drove the Mongols north of the Great Wall and proclaimed himself the Hongwu Emperor, founding the Ming dynasty that would rule China for nearly three centuries. Lake Poyang was the decisive battle of China's reunification, fought on a scale that Europe would not match until the modern era. The dynasty born from its flames produced the Forbidden City, Zheng He's voyages, and the Great Wall as it exists today.