Beginning date of the Battle of Lake Poyang; the forces of two Chinese rebel leaders — Chen Youliang and Zhu Yuanzhang — are pitted against each other in what is one of the largest naval battles in history, during the last decade of the ailing, Mongol-led Yuan dynasty.

Yuan dynasty
Mongol
Largest naval battle in history
Zhu Yuanzhang
Chen Youliang
Battle of Lake Poyang