Abstract

In 1363 AD (the 23rd year of the Zhizheng era), a decisive battle took place in the waters of Poyang Lake that shaped China’s history for centuries. Emperor Chen Youliang of Han led a massive force of 600,000 land and naval troops against Wu King Zhu Yuanzhang’s 200,000 mariners in a brutal 35-day confrontation near Mount Kanglang [1, 2]. Faced with Chen’s towering war galleons, Zhu Yuanzhang utilized a sudden northeast wind to launch a fire attack, burning hundreds of enemy ships and laying the foundation for the Ming Dynasty [2].

Geographic Connection

Poyang Lake, Mount Kanglang (Mount Kang), Hongdu (Nanchang), Yu’gan, Hukou, Wuchang, Nanhuzui, Jingjiang Mouth, Meixi River, Nuomizui, Huangjinbu, Tuanhuping [1-5].

I. The Ultimate Rivalry: Strategic Gambits Before 1363

In 1361 (the 21st year of Zhizheng), after losing Jiangzhou, Chen Youliang retreated to Wuchang. To eliminate the growing threat of Zhu Yuanzhang, Chen exhausted his national treasury to build colossal warships and train a massive navy [2]. Historical records describe these ships as being dozens of feet high, decorated with red lacquer, and divided into three tiers. They even featured “horse stables” on board, and the oar boxes were encased in iron for maximum defense [6].

By April 1363, Chen Youliang launched his campaign with a fleet of 5,000 vessels, carrying his entire court and family, totaling 600,000 men, to besiege Nanchang (then known as Hongdu) [1, 2]. Nanchang’s defenders, led by Zhu Wenzheng and Deng Yu, held out for 85 grueling days [1]. In July, Zhu Yuanzhang personally led 200,000 troops from Nanjing to relieve the city. The two fleets met in the waters off Mount Kanglang in Yu’gan, igniting the largest naval engagement of the late Yuan Dynasty [2].

II. The Kanglangshan Position: Geography and Force Comparison

Mount Kanglang (now Mount Kang) is an isolated peak located in the southeastern Poyang Lake region of Yu’gan County, covering an area of 3.5 square kilometers with an altitude of 23.4 meters. Due to its ability to resist wind and waves, it was anciently known as “Anti-Wave Mountain” [3]. Legends tell that Zhu Yuanzhang and his strategist Liu Bowen identified the site as a perfect tactical position for concealment and drills [7].

The disparity in strength was staggering. Chen Youliang commanded 600,000 men and colossal, interlinked ships that functioned like floating fortresses [1, 2]. In contrast, Zhu Yuanzhang had only 200,000 men and smaller, nimbler vessels. In the early stages, the “uphill” naval battle favored Chen. Zhu’s own command ship even ran aground at the foot of Mount Kanglang and was nearly captured by Chen’s general Zhang Dingbian, only saved when the legendary general Chang Yuchun shot Zhang with an arrow [2].

III. The Fire Miracle: The Strategic Turn of July 1363

The decisive moment arrived on the afternoon of July 22, 1363. A strong northeast wind began to blow across Poyang Lake. Seizing the opportunity, Zhu Yuanzhang adopted General Guo Xing’s plan for a fire attack [2]. Zhu ordered small skiffs filled with dry reeds and gunpowder to be sent toward Chen’s fleet. To deceive the enemy, straw effigies were placed on these boats to simulate a boarding party.

Under the force of the wind, the fire spread instantly. The chronicles describe a scene where “the flames filled the sky and the lake turned red” [1]. Hundreds of Chen’s massive ships were consumed by fire. Zhu’s forces launched a relentless follow-up attack, resulting in over 100,000 casualties for Chen’s army through combat and drowning. Chen’s brothers, Youren and Yougui, died in the inferno, shattering the Han army’s morale [2]. Following this disaster, Chen retreated into a defensive posture, never to regain the initiative.

IV. The End of an Empire: From Nanhuzui to Jingjiang Mouth

On August 8, 1363, Zhu Yuanzhang moved his forces to Nanhuzui, building stockades along the shore and deploying fire rafts in the channel to sever Chen’s supply lines [8]. Trapped in the lake for days with no food, Chen’s army fell into despair. On August 27, Chen attempted a desperate breakout, intending to sail down the Yangtze River back to Wuchang, but he was intercepted by Zhu’s ambush at Jingjiang Mouth [6, 8].

In the final pursuit, while Chen Youliang peeked out from his command ship to check the situation, a stray arrow struck him through the left eye and skull, killing him instantly [6, 8]. Following his death, his general Chen Rong surrendered the remaining 100,000 troops to Zhu [8]. Only Zhang Dingbian managed to escape in the darkness with Chen’s body and his young son Chen Li, fleeing back to Wuchang [8, 9].

V. Legacy in Stone: The Temple of Martyrs at Mount Kang

To honor those who fell in the Poyang Lake campaign, Zhu Yuanzhang ordered the construction of the “Zhongchen Temple” (Temple of Loyal Ministers) on Mount Kanglang in April 1364 [10, 11]. The temple was a grand structure, 31 meters wide and 46 meters deep, built with a traditional timber frame and featuring a “Dingjiang King” hall [11]. It was dedicated to the 36 martyrs, including Han Cheng and Ding Pulang.

The battle also left a lasting mark on local toponymy. The “Meixi River” in Yu’gan was reportedly named by Zhu Yuanzhang himself. During the battle, the lake water became too bloody to drink; when his troops found a clean spring at Nuomizui, Zhu recalled the story of “Watching Plums to Quench Thirst” and named the stream Meixi [5]. Today, these historical sites and legends stand as a testament to one of the most pivotal naval battles in world history.

Bibliography

[1] “Annals of Yu’gan County, Jiangxi” · Overview … (358) [2] “Annals of Yu’gan County, Jiangxi” · Historical Warfare … (394) [3] “Annals of Yu’gan County, Jiangxi” · Architecture: Temples … (383) [4] “Annals of Yu’gan County, Jiangxi” · Stories and Legends … (397, 398) [5] “Jiujiang County Annals” · Major Warfare Chronicles … (51, 52) [6] “Chronicles of Jiujiang’s Past” · Yuan Dynasty … (77) [7] “Annals of Yu’gan County, Jiangxi” · Geography: Mountains … (368)