Luandi Modu

Biography

Family Background and Early Life

Modu was the crown prince of Touman Chanyu and belonged to the Luandi clan. Late in his reign, Touman favored a Yanzhi who bore him a younger son and intended to depose Modu as crown prince in favor of that child. To accomplish this, Touman sent Modu to the Yuezhi as a hostage. Soon after Modu arrived, Touman launched a sudden attack on the Yuezhi, hoping that they would kill his son in retaliation. The Yuezhi indeed intended to kill Modu, but in the crisis he stole one of their fine horses and rode back to the Xiongnu alone. Touman, impressed by Modu's ability to escape, did not punish him and instead placed him in command of ten thousand cavalry.

Modu understood that his father had already resolved to kill him and that he might be deposed or murdered at any time. He therefore began building his own power in secret. He created a type of sounding arrow, the whistling arrow, to train his followers in absolute obedience. Modu ordered that his men must all shoot at whatever target his whistling arrow struck and that anyone who failed to do so would be executed. He first shot at game animals and killed anyone who failed to follow. He next shot his own prized horse and again executed those who hesitated. He then shot at his beloved wife, putting to death those who were too frightened to fire. After this repeated selection, when Modu fired a whistling arrow at Touman Chanyu's horse, no one around him dared disobey. By then, the ten-thousand-man cavalry force had become Modu's personal army.

Killing His Father, Seizing the Throne, and Building the Regime

In 209 BCE, the first year of Qin Er Shi, Modu accompanied Touman Chanyu on a hunt. During the hunt he suddenly shot a whistling arrow at Touman, and his followers released their arrows with him, killing Touman on the spot. Modu then executed his stepmother, younger half-brother, and every minister who refused to submit, and proclaimed himself Chanyu.

After taking the throne, Modu reorganized the Xiongnu political structure. He appointed Left and Right Tuqi kings, also known as Wise Kings, Guli kings, generals, grand commandants, great household administrators, Guduhou, and other members of the Twenty-Four Leaders, creating a graded military-administrative hierarchy. He also established systems of taxation and penal law, transforming the Xiongnu from a loose tribal confederation into a more tightly organized nomadic polity. These institutions provided a foundation for the later expansion of the Xiongnu empire.

Destruction of the Donghu and Unification of the Steppe

When Modu first came to power, the Donghu were strong. Hearing that he had killed his father and seized the throne, they sent an envoy to test him and demanded Touman Chanyu's prized thousand-li horse. Modu asked his ministers for advice. They all said that the horse was a Xiongnu treasure and should not be surrendered. Modu replied, "How can I begrudge a horse to a neighboring state?" and gave the horse to the Donghu. Believing him weak, the Donghu soon sent another envoy demanding one of Modu's Yanzhi. His ministers were furious and urged war, but Modu said, "How can I begrudge a woman to a neighboring state?" and sent his beloved wife to them as well.

The Donghu ruler grew still more arrogant and advanced westward. A third envoy demanded a stretch of abandoned land more than a thousand li in extent between the Xiongnu and Donghu. Modu again asked his ministers. Some replied that the unused land could be given away or retained. Modu became enraged and declared, "Land is the foundation of the state. How can it be given to them?" He immediately executed those who had recommended surrendering the land, mounted his horse, ordered that anyone who retreated would be put to death, and led an eastern surprise attack on the Donghu.

Because the Donghu had gained what they wanted on the first two occasions, they underestimated Modu and made no preparations. They collapsed in a single battle; their ruler was killed, and their people, livestock, and property fell to the Xiongnu. Modu then drove the Yuezhi westward, annexed Loufan and the Baiyang king of Henan in the south, and recovered the former Xiongnu Henan region that the Qin general Meng Tian had seized, taking control of parts of the northern Qin frontier. He later subdued Hunyu, Qushe, Dingling, Gekun, and Xinli in the north. Xiongnu nobles and ministers thereafter submitted to him and regarded him as an able ruler. Modu united the Mongolian steppe and established what the source text characterizes as the strongest empire in Xiongnu history.

War and Heqin with the Han

In 201 BCE, the sixth year of Emperor Gaozu of Han, Liu Bang had only recently unified the realm when he enfeoffed Xin, King of Han, in the Dai region with his capital at Mayi. The Xiongnu mounted a major attack on Mayi, and Xin surrendered to them. With Xin's support, Modu led troops south across Juzhu Mountain, attacked Taiyuan, and advanced to the walls of Jinyang.

In 200 BCE, the seventh year of Emperor Gaozu, Liu Bang personally led 320,000 troops against the Xiongnu. Modu feigned retreat, concealed his elite soldiers, and displayed weak and elderly troops in order to entice the Han army into pursuit. Eager for victory, Liu Bang left the main army behind and advanced with light cavalry to Pingcheng. Modu then surrounded him at Baideng with 400,000 elite cavalry for seven days and nights. The Han forces inside and outside the encirclement could not support each other, and supplies ran out. Xiongnu cavalry mounted white horses in the west, blue-gray horses in the east, black horses in the north, and red horses in the south, presenting an imposing formation.

Liu Bang used a plan attributed to Chen Ping and sent an envoy with rich gifts to Modu's Yanzhi. She told Modu, "Two rulers should not place one another in such straits. Even if you obtain Han territory, Chanyu, you will ultimately be unable to live there. Moreover, the Han king also has divine protection; Chanyu should consider this carefully." At the same time, Modu had arranged to rendezvous with Wang Huang and Zhao Li, generals of Xin, King of Han, but their forces had not yet arrived. Suspecting that they might have conspired with the Han, Modu opened one corner of the encirclement. Liu Bang ordered his soldiers to keep their bows drawn and arrows nocked, broke out through the opening, and rejoined the main Han army. Modu then led his troops northward.

After this battle, the Han and Xiongnu entered a long period of confrontation. Liu Bang adopted Liu Jing's advice, sent a woman of the imperial clan styled as a princess to become the Chanyu's Yanzhi, supplied silk floss, silk, wine, grain, and other goods every year, and bound the two rulers as brothers, beginning the heqin policy. Thereafter Xin, King of Han, serving the Xiongnu, together with Zhao Li, Wang Huang, and others, repeatedly violated agreements and raided Dai and Yunzhong commanderies. The Han sent Fan Kuai against them and recovered counties in Dai, Yanmen, and Yunzhong. After Lu Wan, King of Yan, rebelled against the Han and joined the Xiongnu, he also frequently raided the area east of Shanggu.

Later Years and Death

Liu Bang died in 195 BCE, the twelfth year of Emperor Gaozu. Modu sent Empress Lü an extremely provocative letter: "I am a solitary and unfortunate ruler, born among the marshes and raised on the open plains among cattle and horses. I have often reached the frontier and would like to travel in the Middle Kingdom. Your Majesty stands alone, and I live alone; neither ruler is happy and neither has a way to amuse themselves. I would like to exchange what I have for what you lack." Empress Lü was furious and wanted to send an army against the Xiongnu. Her generals warned her by recalling Emperor Gaozu's encirclement at Baideng, and she abandoned the plan, replying in deferential terms and continuing heqin.

Early in Emperor Wen's reign, the two sides renewed heqin. In 177 BCE, the third year of Emperor Wen's early reign, the Xiongnu Wise King of the Right entered the Henan region and raided the Han frontier. Emperor Wen sent Grand Councilor Guan Ying with 85,000 charioteers and cavalry against him, forcing the Wise King of the Right beyond the frontier. In 176 BCE, the fourth year of Emperor Wen's early reign, Modu wrote to Emperor Wen reporting that he had punished the Wise King of the Right by sending him west against the Yuezhi and that Loulan, Wusun, Hujie, and twenty-six neighboring states had been subdued, so that "all the peoples who draw the bow have become one family." He proposed restoring the old agreement and ending the fighting. Han officials considered heqin advantageous, and Emperor Wen accepted.

Modu died in 174 BCE, the sixth year of Emperor Wen's early reign. His son Jizhu succeeded him as Lao Shangchanyu.

Modu was at first heir to his father, the Chanyu Touman; when a favored consort bore a younger son, Touman planned to kill him and make the child heir, and sent him as a hostage to the Yuezhi. He had barely arrived when Touman attacked the Yuezhi, whose people meant to kill him; Modu stole a good horse and escaped back to the Xiongnu by night. Touman, admiring his daring, gave him ten thousand cavalry. Modu trained his men with a whistling arrow, ordering that all shoot wherever it flew, and had them shoot his own favorite horse, his wife and his father's best horse to test their obedience; at last, hunting with his father, he shot the whistling arrow at Touman and his men followed, killing him, and Modu made himself chanyu.

He went on to destroy the Donghu in the east, strike the Yuezhi in the west and absorb the Loufan and Baiyang in the south, subjecting the Hunyu, Qushe, Dingling, Gegun and Xinli in the north, uniting the tribes of the Mongolian plateau into a powerful pastoral state. In 200 BCE, when Liu Bang led a great army north, Modu surrounded the Han forces for seven days at Baideng, after which the Han turned to marriage alliances and kept a comparative peace with the Xiongnu for decades.

His rule set the basic form of the Xiongnu state, its combination of military and civil organization and its mounted archery shaping later steppe regimes profoundly.

Major Activities

Military Achievements

The source text describes Modu as the most outstanding military commander in Xiongnu history. He used the whistling-arrow method to train an elite cavalry force that obeyed him absolutely, then rapidly consolidated Xiongnu power after killing his father and taking the throne. He destroyed the Donghu, drove the Yuezhi westward, annexed Loufan, subdued Hunyu, Qushe, Dingling, Gekun, and Xinli, and expanded Xiongnu power across a vast region from the Liao River to the Congling Mountains and from the Qin Great Wall to Lake Baikal, commanding more than 300,000 mounted archers. The Battle of Baideng was the peak of his military career: by luring the enemy deep into Xiongnu territory and surrounding Liu Bang for seven days, he demonstrated both strategic judgment and operational command.

Political Institutions

Modu established a comparatively complete governing structure within the Xiongnu. He appointed the Left and Right Tuqi kings, Guli kings, generals, grand commandants, great household administrators, Guduhou, and other members of the Twenty-Four Leaders, creating a graded administrative hierarchy. He also established taxation and penal rules, helping transform the Xiongnu from a tribal confederation toward a state-like political organization. These institutions contributed to the Xiongnu empire's subsequent stability and provided a model for later nomadic regimes.

Diplomatic Strategy

Modu displayed highly flexible diplomacy. When the Donghu were strong at the beginning of his reign, he deliberately endured humiliation and lulled them into complacency by surrendering first his prized horse and then his beloved wife, causing their ruler to become arrogant and careless before destroying them in a surprise attack. His policy toward the Han was similarly flexible: he fought when conditions favored war and accepted a settlement after Baideng, while politically using heqin to obtain goods and stability. His provocative letter to Empress Lü served both to test the Han court's limits and as psychological pressure, and it ended with the Han continuing the heqin arrangement.

Contemporaries and Associates

Modu fought Emperor Gaozu Liu Bang at Baideng, exchanged provocative correspondence with Empress Lü, and conducted heqin diplomacy with Emperor Wen. He cooperated with Han rebels such as Xin, King of Han, and Lu Wan, using them in operations against the Han frontier. His struggle with the ruler of the Donghu illustrates the competitive and violent relations among steppe powers described in the source text.

Personal Relations

• Father: Touman Chanyu, killed by Modu using the whistling-arrow stratagem
• Stepmother: Touman's favored Yanzhi, executed by Modu
• Younger half-brother: son of Touman and the favored Yanzhi, executed by Modu
• Beloved wife: a Yanzhi whom Modu gave to the ruler of the Donghu
• Son: Jizhu, who succeeded him as Lao Shangchanyu
• Left and Right Tuqi kings, also called Wise Kings, Guli kings, generals, grand commandants, great household administrators, Guduhou, and other members of the Twenty-Four Leaders
• Wise King of the Right, who entered the Henan region and raided the Han frontier
• Ruler of the Donghu: defeated and killed in Modu's surprise attack
• Yuezhi: driven westward by Modu
• Xin, King of Han: Han rebel who surrendered to and served the Xiongnu
• Lu Wan: Han rebel who joined the Xiongnu
• Liu Bang, Emperor Gaozu of Han: opponent at the Battle of Baideng
• Empress Lü: received Modu's provocative letter and maintained heqin
• Emperor Wen of Han: renewed heqin with Modu
• Guan Ying: Han Grand Councilor who drove back the Wise King of the Right

Historical Assessment

Han and Contemporary Assessments

• Lou Jing, also known as Liu Jing, said: "Modu killed his father and took his place, married his father's women, and established authority by force; he cannot be persuaded by benevolence and righteousness." — Records of the Grand Historian, "Biographies of Liu Jing and Shusun Tong"
• Han generals advising Empress Lü against attacking the Xiongnu said: "Even with Emperor Gaozu's wisdom and martial ability, he was still trapped at Pingcheng." — Records of the Grand Historian, "Account of the Xiongnu"
• Xiongnu nobles and ministers submitted to him and "regarded Modu Chanyu as worthy." — Records of the Grand Historian, "Account of the Xiongnu"

Tang and Song Periods

• Sang Weihan of Later Jin in the Five Dynasties wrote: "Even the heroic founder of Han still paid goods to Modu; Emperor Gaozu of Tang, for all his martial strategy, still acknowledged himself a subject to the khagan." — Old History of the Five Dynasties
• Northern Song writer Su Xun wrote that the strength of the ancient Xiongnu never exceeded that of Modu and discussed this strength against the background of the devastation following the Qin and the Liu–Xiang struggle. — Collected Works of Jiayou
• Southern Song writer Ye Shi wrote that despite Emperor Gaozu of Han's power after destroying Qin and defeating Xiang Yu, the Xiongnu still held the advantage and trapped him at Pingcheng. — Recorded Words from Study and Learning

Ming and Qing Periods

• Tan Qian, writing in the late Ming and early Qing, observed that although Modu was strong, the Battle of Baideng was ultimately resolved through the intervention of the Yanzhi. — Guoque
• Late Qing and early Republican writer Cai Dongfan condemned Modu's patricide and cruelty while also describing his destruction of the Donghu and encirclement of Emperor Gaozu as evidence of sophisticated military strategy comparable to that of famous strategists. — Romance of the Former Han

Modern Assessments

• Lin Gan's History of the Xiongnu regards Modu as the founder of the Xiongnu empire and argues that his military organization and political institutions deeply influenced later nomadic regimes.
• Jian Bozan's Outline of Chinese History argues that the Battle of Baideng established the early Han policy of heqin toward the Xiongnu and profoundly influenced the political order of the early Western Han.
• Modern scholars generally regard Modu Chanyu as one of the most important leaders of a nomadic people in world history and the Xiongnu empire he created as one of the strongest political powers in contemporary Asia.