In spring and summer 1363, Nanchang on the Gan River and Lake Poyang became the center of a siege by Chen Youliang’s Han forces, followed by Zhu Yuanzhang’s relief expedition and the Lake Poyang campaign of 30 August to 4 October 1363. ⚔️🚢\n\nThe turning point came when Chen shifted from siege to lake battle, his fleet met Zhu’s smaller, faster squadrons near Kanglang Mountain, and fire cannon, sand, and fire ships helped break the Han formation and prolong the fight into a blockade.\n\nThe story is grounded in tower ships, banners, halberds, shields, fire cannon, seven ships loaded with gunpowder and reeds, and the recorded movement of fleets through lake channels, sandbars, and river outlets. These details show how the campaign unfolded at human scale, not just in grand totals.\n\nThe remaining uncertainty lies in the exact fleet numbers, the full tactical map, and the precise circumstances of Chen Youliang’s death, including the identity of the archer. Jewels of History examines how Nanchang’s resistance, the fire-ship attack, and Chen’s failed escape reshaped the struggle for the southern Yangzi.