Battle of Fei River (383): Eastern Jin Halts the Former Qin

The Battle of Fei River (Feishui) was fought in late AD 383 near Shouyang in modern Anhui province, between the Former Qin state that ruled northern China and the Eastern Jin dynasty in the south. A much smaller Jin army routed the vanguard of the Qin ruler Fu Jian, whose attempt to conquer the south and reunite China collapsed. The battle preserved the southern Chinese state and led to the break-up of Fu Jian’s empire.

Background: a divided China

After the Disaster of Yongjia in 311 and the fall of Chang’an in 316, the Jin dynasty lost northern China. Its court survived in the south at Jiankang (modern Nanjing) as the Eastern Jin. The north was contested by a series of states founded by Xiongnu, Jie, Xianbei, Di, Qiang and Chinese leaders, known collectively as the Sixteen Kingdoms.

The most successful of these was the Former Qin, ruled by the Di people of the Fu clan. Its third ruler, Fu Jian (r. 357–385), was guided by the able Chinese minister Wang Meng. Together they conquered the Former Yan in 370 and the Former Liang and the Tuoba state of Dai in 376, uniting the north for the first time since 311. In 373 Qin also took Sichuan from Jin, and in 379 captured the key city of Xiangyang on the Han River.

Fu Jian’s decision for war

Before his death in 375, Wang Meng reportedly advised Fu Jian not to attack the Jin, arguing that the south still had legitimate rulers and that Qin should first secure the loyalty of the Xianbei and Qiang leaders it had recently conquered. Many of Fu Jian’s own relatives and ministers, including his brother Fu Rong, gave the same advice.

Fu Jian rejected their warnings. He believed that the conquest of the south would complete his mission to reunite China. Some of the Xianbei and Qiang commanders, such as Murong Chui and Yao Chang, encouraged him, perhaps hoping that a war would weaken the Qin.

In 383 Fu Jian ordered a general mobilisation. According to the Book of Jin, he raised 600,000 infantry and 270,000 cavalry, plus 30,000 guards, and boasted that his soldiers could dam the Yangtze by throwing their riding whips into it. Modern historians, including Michael C. Rogers, consider these figures and speeches largely literary, but the army was clearly very large and slow to assemble.

The Jin defence

At Jiankang the senior minister Xie An directed the defence. He gave command of the front to his brother Xie Shi and his nephew Xie Xuan. Xie Xuan led the Beifu army, a force recruited from northern refugees settled around the lower Yangtze, which had a reputation for toughness. The total Jin force at the front is usually given as about 80,000 men.

The Qin vanguard under Fu Rong crossed the Huai River area and captured Shouyang, the strategic city on the Fei River. Jin forces fought back: in a night attack at Luojian, the Beifu officer Liu Laozhi with about 5,000 men defeated a Qin detachment and killed its commander, Liang Cheng.

A former Jin officer named Zhu Xu, captured at Xiangyang in 379 and sent by Fu Jian to persuade the Jin to surrender, secretly told them instead that the Qin army had not yet fully gathered and that they should strike its vanguard at once.

The battle

The two armies faced each other across the Fei River. Fu Jian came to Shouyang with a cavalry force to see the enemy. Looking out from the city walls, he saw the disciplined Jin ranks and, according to a famous anecdote, mistook the trees and grass on nearby Bagong Mountain for soldiers. This gave rise to the idiom “every bush and tree a soldier”.

Xie Xuan sent a message asking the Qin army to draw back a short distance so that the Jin could cross the river and fight a decisive battle. Fu Jian and Fu Rong agreed, intending to attack the Jin while they were half-way across. But when the Qin line began to withdraw, the movement turned into confusion. Zhu Xu, behind the Qin lines, shouted that the Qin army had been defeated, and panic spread.

The Jin troops crossed and attacked. Fu Rong tried to rally his men, but his horse fell and he was killed. The Qin army broke and fled northwards. The histories say the fleeing soldiers were so frightened that they took the sound of the wind and the cry of cranes for pursuing Jin troops. Fu Jian was wounded by an arrow and escaped with a small following.

Key people

• Fu Jian (338–385): ruler of Former Qin, who launched the invasion.
• Fu Rong (died 383): Fu Jian’s brother and commander of the vanguard, killed in the battle.
• Xie An (320–385): Eastern Jin chief minister who directed the war.
• Xie Xuan (343–388): commander of the Beifu army and leader of the attack.
• Xie Shi (327–388): overall field commander for the Jin.
• Zhu Xu: former Jin officer in Qin service who helped bring about the rout.

Consequences

The defeat destroyed Fu Jian’s authority. Murong Chui, whose troops were intact, returned to the north-east and founded the Later Yan in 384. Yao Chang founded the Later Qin in the north-west. Other Xianbei leaders formed the Western Yan. In 385 Fu Jian was captured by Yao Chang’s forces and killed.

In the far north, the Tuoba Xianbei re-established their state in 386. It became the Northern Wei, which eventually reunified northern China and sponsored monuments such as the Yungang Grottoes.

The Eastern Jin, saved from conquest, recovered some territory but did not reunite China. It survived until 420, when the general Liu Yu founded the Liu Song dynasty. North and south remained divided until the Sui reunification of 589.

Legacy and debates

Chinese tradition celebrates the battle as a classic victory of the few over the many. A well-known story says that Xie An was playing weiqi, the board game also called go, when news of the victory arrived; he read the letter calmly and remarked only that the young men had defeated the enemy. Such anecdotes, preserved in the Book of Jin, were meant to show ideal composure and may be embellished.

Some modern scholars argue that the traditional account was shaped as a moral lesson about Fu Jian’s pride, and that the true scale of the battle was smaller. Even so, all sources agree that the outcome was decisive and changed the balance of power in China.

Timeline

• 357: Fu Jian becomes ruler of the Former Qin.
• 370: Qin conquers the Former Yan.
• 375: Death of Wang Meng.
• 376: Qin conquers the Former Liang and Dai, uniting northern China.
• 379: Qin captures Xiangyang.
• 383, autumn: Fu Jian launches his invasion of the south; Fu Rong takes Shouyang.
• 383, late (11th month): Jin victory at the Fei River; Fu Rong is killed.
• 384: Murong Chui founds the Later Yan; Yao Chang founds the Later Qin.
• 385: Fu Jian is killed.

Why it matters

The Battle of Fei River ensured that southern China, with its Chinese court and culture, survived as an independent state, while the north broke again into rival kingdoms. It shaped the long division between north and south that lasted two more centuries and gave Chinese language some of its most familiar idioms.