Liu Wenjing

Biography

Guanlong Aristocracy and Friendship at Jinyang Liu Wenjing, courtesy name Zhaoren, was a native of Wugong in Jingzhao Commandery (present-day Wugong County, Xianyang, Shaanxi Province). Although his family had resided in the metropolitan Guanzhong region for generations, they claimed ancestral roots in the prestigious Pengcheng Liu lineage, embodying the archetypal military and bureaucratic gentry of the Guanlong aristocratic bloc. His father, Liu Shao, served as an officer under the Northern Zhou and early Sui dynasties, dying in battle while defending the realm. In recognition of his father's sacrificial martyrdom, the imperial court permitted the youthful Liu Wenjing to inherit his father's official status, appointing him Equal in Honor to the Three Excellencies (Yitong Sansi). From his early years, Liu Wenjing demonstrated singular leadership qualities, strategic intellect, and personal magnetism. Historical chronicles record that he possessed "a majestic and handsome stature, commanding administrative talent, and an expansive, chivalrous spirit endowed with brilliant strategic calculation." In the twilight years of Emperor Yang of Sui, as signs of imperial overextension and rebellion began to multiply across the empire, Liu was assigned to serve as Magistrate of Jinyang (modern Taiyuan, Shanxi). While in office, he formed an acquaintance with Pei Ji, who oversaw the imperial retreat as Director of the Jinyang Palace. Despite contrasting temperaments—Liu being assertive and ambitious, and Pei being cautious and fond of luxury—the two men bonded instantly, establishing a deep and trusting friendship. In the thirteenth year of the Daye era (617), Emperor Yang appointed Li Yuan, Duke of Tang, as Garrison Commander of Taiyuan to hold the northern frontier against the Turks and suppress local rebellions. Upon Li Yuan's arrival, Liu Wenjing astutely perceived that the duke was no ordinary official, but a man harboring "grand ambitions for the four quarters." Liu took the initiative to cultivate close relations with Li Yuan's household. During this period, Liu quietly observed Li Yuan's second son, the eighteen-year-old Li Shimin, and was astonished by the youth's preternatural military poise and boundless vision. Returning to his residence, Liu told his friend Pei Ji with immense excitement: "Li Shimin is no ordinary mortal! His magnanimity resembles that of Emperor Gaozu of Han, and his martial brilliance matches that of Emperor Wu of Wei (Cao Cao). Though young in years, he is truly a heaven-sent genius!" Pei Ji, an easygoing scholar, dismissed Liu's praise with a skeptical laugh. Yet Liu remained steadfast in his conviction, forging secret ties with Li Shimin to await an opportunity for dynastic transformation. ### Prison Strategic Planning and the Taiyuan Uprising In the spring of 617, the Sui empire plunged into irreversible chaos. The celebrated warlord Li Mi raised the standard of rebellion at Wagang in Henan, sending shockwaves across northern China. Because Liu Wenjing's younger sister was married to Li Mi, the Sui authorities in Taiyuan arrested Liu on suspicion of treason and cast him into the death cells of the Jinyang county jail. Far from being paralyzed by terror, Liu recognized that the hour of destiny had arrived. Learning of Liu's imprisonment, Li Shimin, who deeply valued his counsel, used the pretext of inspecting the prison to visit Liu in his cell late at night. There ensued the legendary "Prison Strategic Planning" (Zhaoyu Dingce). Li Shimin opened the conversation: "The realm is in total upheaval and the people are suffering; now that you are trapped in chains, what counsel do you have for me?" Sitting calmly behind the iron bars, Liu Wenjing laughed and replied: "The empire has collapsed to dust. The tyrant Emperor Yang is isolated far away in Jiangdu, while bandits swarm across the mountains and plains. If ordinary ruffians take arms, they accomplish nothing more than plundering; but if a true sovereign rises with the cosmic tides, the realm can be unified in a single stroke! The Duke of Tang commands tens of thousands of elite cavalry and infantry in Taiyuan, and you possess extraordinary, heaven-sent martial gifts. If you raise the righteous banner, recruit regional heroes, and gather a host of one hundred thousand men, marching directly into Guanzhong to capture Chang'an and issue commands to the empire, the realm can be settled as easily as turning over one's hand!" Li Shimin clapped his hands in delight, exclaiming: "Your words match the deepest desires of my heart!" The grand operational blueprint for the founding of the Tang dynasty was thus forged in that dark cell. Subsequently, Li Shimin and Pei Ji collaborated to trap Li Yuan by arranging for imperial consorts from the Jinyang Palace to serve the duke at a banquet, making rebellion an existential necessity for Li Yuan to avoid execution for treason. Li Shimin then persuaded his father to release Liu Wenjing and appoint him chief military planner. At that time, the deputy garrison commanders Wang Wei and Gao Junya—sent by Emperor Yang to spy on Li Yuan—grew suspicious of the massive recruitment drives and plotted to assassinate Li Yuan during a rain-prayer ceremony at the Jin Shrine. Discovering the plot, Liu Wenjing, alongside Changsun Shunde and Liu Hongji, executed a preemptive strike. During a morning council in the government hall, Liu arranged for armed militia to burst in, accusing Wang Wei and Gao Junya of treasonous collusion with the Turks. The two deputies were arrested on the spot. Days later, when Turkic cavalry approached the outskirts of Jinyang, Li Yuan used the pretext to execute Wang and Gao, eradicating all internal opposition. To rapidly expand their army, Liu Wenjing demonstrated brilliant psychological warfare. He forged an imperial decree purportedly sent from Emperor Yang in Jiangdu, ordering the immediate conscription of all young men between eighteen and twenty-two in Taiyuan, Mayi, and Yanmen for a new campaign against Goguryeo in Liaodong. The decree triggered panic and fury across the region. Exploiting this public outrage, Li Yuan opened the state granaries and issued a call to "defend the home and overthrow tyranny." Within days, tens of thousands of vigorous recruits rallied to Jinyang, assembling a formidable army. ### Diplomatic Mission to the Turks and Marching on the Capital At the inception of the uprising, Li Yuan confronted a lethal geopolitical vulnerability: to the north lay the Eastern Turkic Khaganate, where Shibi Khagan commanded hundreds of thousands of nomadic cavalry, and the warlord Liu Wuzhou of Mayi had already submitted to Turkic suzerainty. If the Tang army marched south into Guanzhong, the Turks could easily strike Taiyuan from the rear, annihilating the rebellion. Confronting this crisis, Liu Wenjing volunteered to undertake a solitary diplomatic mission to the Turkic court. Traveling alone through hostile northern steppe, Liu arrived at Shibi Khagan's royal tent. The khagan demanded haughtily: "Why does the Duke of Tang take up arms?" Liu Wenjing stood tall and delivered a masterly diplomatic speech: "The Sui emperor is cruel and dissolute; he has abandoned the ancestral altars and wandered off to Jiangdu, plunging the realm into ruin. The Duke of Tang, an imperial relative of the highest rank, has raised a righteous army in Jinyang to march west into Guanzhong, depose the tyrant, and enthrone the imperial grandson Dai Wang Yang You to pacify the empire. If the Khagan joins this noble cause and marches south with the Duke, all walled cities, territories, and civilian populations captured along the way shall belong entirely to the Duke of Tang; while all gold, silver, silk, treasures, and captive women shall be yours to take without reservation!" Enticed by these immense material rewards, Shibi Khagan entered into a formal blood covenant with Liu. The khagan dispatched his general Kang Shaoli with two thousand elite Turkic cavalry and one thousand fine warhorses to accompany Liu back to Jinyang. Through this diplomatic triumph, Liu neutralized the northern threat and provided the fledgling Tang army with vital shock cavalry. In July 617, Li Yuan led his grand host south from Taiyuan. At Huoyi, the seasoned Sui general Song Laosheng blocked their path with tens of thousands of elite troops. Torrential autumn rains cut supply lines, and Li Yuan wavered, proposing a retreat to Taiyuan. Liu Wenjing and Li Shimin stood in the rain, vehemently pleading: "Victory lies in speed; if we retreat, our men will scatter and the cause is lost!" Persuaded, Li Yuan pressed forward. In the decisive Battle of Huoyi on September 8, Liu Wenjing rode at the front of the assault battalions, coordinating with Li Shimin's cavalry to penetrate the enemy lines, slaying Song Laosheng and wiping out the Sui army. Pushing forward, Liu secured Tongguan, captured Shan County, and welcomed regional warlords into the fold. On December 12, the Tang army captured Chang'an. Li Yuan enthroned Yang You as a puppet emperor (Emperor Gong of Sui), appointing Liu Wenjing Grand Minister of Agriculture (Dasinong) and creating him Duke of Lu (Lu Guogong). All state ceremonial, administrative protocols, and palace security were entrusted jointly to Liu Wenjing and Pei Ji. In May 618, Li Yuan accepted Yang You's abdication and proclaimed the Tang dynasty, ascending the throne as Emperor Gaozu. For his paramount service, Liu Wenjing was appointed Chancellor (Nashi, head of the Chancellery). Reviewing the founding merits of the uprising, Emperor Gaozu declared: "In planning the Taiyuan Uprising, Pei Ji is first, and Liu Wenjing is second." The emperor conferred upon Pei Ji, Liu Wenjing, and Prince of Qin Li Shimin the supreme privilege of an iron certificate (tieduan), granting them exemption from execution for two capital crimes (te shu er si). ### The Reverse at Qianshuiyuan and Estrangement Between Generals Despite his brilliant intellect, Liu Wenjing's unyielding pride and fiery disposition propelled him toward catastrophe. In July 618, Xue Ju, the formidable "Hegemon-King of Western Qin," led a massive cavalry host toward Jingzhou, threatening Chang'an. Emperor Gaozu dispatched Li Shimin as Supreme Commander to repel the invasion, with Liu Wenjing serving as Chief of Staff (Xingjun Sima) and Yin Kaishan as Field General. Upon arriving at the front, Li Shimin was struck by a severe bout of malaria, confining him to his bed. Aware that Xue Ju's forces were fierce but lacked food, Li Shimin issued explicit orders to Liu and Yin: "The enemy is deep in our territory and their provisions are exhausted; we must hold our fortified lines and refuse open battle. Once my fever breaks, I will crush them; under no circumstances are you to engage prematurely!" Following Li Shimin's confinement, the overconfident Yin Kaishan urged Liu Wenjing to attack: "The Prince of Qin fears we are incapable of defeating the enemy on our own. When the enemy arrives, if we refuse to fight, we show cowardice!" Succumbing to his own martial pride, Liu agreed. Moving the army to the open plain of Qianshuiyuan, they deployed without proper defensive depth. Xue Ju launched a devastating surprise cavalry attack from the rear hills. The Tang host collapsed in panic; eight generals fell in combat, and over sixty percent of the soldiers were killed or wounded. Li Shimin was forced to execute an agonizing retreat to Chang'an. It was the Tang dynasty's first major military disaster. Furious, Emperor Gaozu stripped Liu Wenjing and Yin Kaishan of their offices and titles, demoting Liu to commoner status. In November 618, Xue Ju died of illness, and his son Xue Rengao took command. Li Shimin launched a second campaign into the northwest, taking Liu Wenjing along as a civilian military advisor. Adopting a patient strategy of attrition, Li Shimin completely annihilated Xue Rengao's army at the second Battle of Qianshuiyuan, pacifying the northwest. Returning in triumph, Li Shimin vigorously petitioned Emperor Gaozu on Liu's behalf, detailing his brilliant battlefield counsel. Gaozu relented, restoring Liu to his titles and appointing him Minister of Revenue (Minbu Shangshu). However, the chasm between Liu Wenjing and his former friend Pei Ji had become an unbridgeable canyon. Liu was acutely conscious of his own military and diplomatic genius, having forged the Turkish alliance and bled on the battlefield. By contrast, Pei Ji had contributed little more than wine, banquets, and palace women in Jinyang. Yet Gaozu elevated Pei to Senior Chancellor (Shangshu You Puye), showering him with limitless wealth and calling him "Director Pei" instead of using his personal name. Meanwhile, Liu's office remained subservient to Pei. This perceived injustice consumed Liu with bitter indignation. In court debates, whenever Pei Ji advanced a policy proposal, Liu unfailingly attacked it with fierce sarcasm, dismantling his arguments. The two founding statesmen clashed openly before the throne, their friendship curdling into virulent hatred. ### Slashed Pillar in Drunken Fury and Tragic Injustice In the autumn of 619 (the second year of Wude), Liu Wenjing invited his younger brother, Liu Wenqi (Attendant-in-Ordinary with Regular Access), to his mansion for drinks to drown his sorrows. As alcohol eroded his inhibitions, Liu poured out his venom over Pei Ji's unmerited supremacy and his own marginalized status. Overwhelmed by rage, Liu suddenly unsheathed his sword, hacked ferociously into a heavy wooden hall pillar, and snarled: "One day, I will surely cut off that old slave Pei Ji's head!" Simultaneously, strange noises were heard in the Liu residence. Deeply worried about his elder brother's volatile career, Liu Wenqi invited a Daoist priest to the mansion to perform an exorcism ritual, which involved stepping through the celestial constellations and swinging a sword to disperse ill omens. At this juncture, a concubine whom Liu had cast out of favor learned of these events. Seeking vengeance, she instructed her brother to submit an urgent denunciation to the imperial palace, claiming that "Liu Wenjing is practicing dark sorcery and witchcraft in his residence, swearing blood oaths with his brother and recruiting assassins to launch an armed coup." Emperor Gaozu was alarmed, immediately ordering Liu Wenjing and his brother arrested and thrown into the palace prison. Gaozu assigned Senior Chancellor Pei Ji and Inner Secretariat Director Xiao Yu to conduct a joint interrogation. In the torture chamber, Liu Wenjing held his head high and confessed proudly: "At the inception of the Taiyuan Uprising, Pei Ji and I were fellow clerks in the garrison office, close as brothers. Now Pei Ji is Senior Chancellor, enjoying immense wealth and honors, while my office and rewards remain far beneath his. I have campaigned east and west, facing death a hundred times, and my military merits far exceed his, yet my treatment is worlds apart. I certainly felt deep bitterness in my heart, and the other day, while drunk, I struck a pillar to vent my frustration. But as heaven and earth are my witness, I harbor not the slightest treasonous thought against the dynasty!" The interrogating minister Xiao Yu and Minister of Rites Li Gang both recognized Liu's innocence, reporting to Gaozu: "Liu Wenjing has committed no treason; his words were merely the drunken ramblings of an embittered man. He has monumental founding merits known to the realm, and must not be put to death!" Furthermore, Prince of Qin Li Shimin entered the inner palace, kneeling before his father to plead desperately: "The strategic plan for the Taiyuan Uprising originated entirely with Liu Wenjing! The empire is not yet fully pacified, and we desperately need men of strategic talent. Liu has achieved glorious merits for the altars, and Your Majesty previously granted him an iron certificate exempting him from two capital crimes. I beg Your Majesty to spare his life!" However, Pei Ji seized this opportunity to deliver the fatal poison. Pei whispered to Gaozu: "Liu Wenjing's intellectual talents and strategic cunning are extraordinary, with few equals under heaven. Yet he is arrogant, volatile, and harbors venomous resentment toward Your Majesty and the court. In these times, when rivals contend for the realm, keeping such a dangerous tiger alive invites certain catastrophe. Your Majesty must not show soft-hearted mercy; seize this moment to eliminate him and secure the state!" Emperor Gaozu had long harbored a secret fear of overly capable military commanders and was deeply suspicious of Liu Wenjing's intimate alliance with the ambitious Prince of Qin. Swayed by Pei Ji's insidious counsel, Gaozu cast aside the iron certificate and rejected all pleas for mercy. In August 619, an imperial edict condemned Liu Wenjing and his brother Liu Wenqi to execution in the marketplace, confiscating their estates. Liu was fifty-two years old. Standing upon the execution ground, Liu Wenjing displayed total defiance. Looking up to the heavens, he uttered an immortal, tragic lament:

"When the soaring bird seeks the skies, the fine bow is broken first; when the enemy state is crushed, the plotting minister is destroyed! From antiquity to the present, that the hunting hound is boiled once the hare is caught—how could this be an empty phrase?!" ### Zhenguan Rehabilitation and Sacrificial Honor The execution of Liu Wenjing sent shockwaves of grief and outrage across the empire. Li Shimin regarded the loss of his foremost strategic mentor as the supreme personal and political tragedy of his early life. In 629 (the third year of the Zhenguan era), having ascended the throne and established the flourishing Zhenguan reign, Emperor Taizong (Li Shimin) brushed aside all lingering opposition from former courtiers of Gaozu to issue a formal imperial decree exonerating Liu Wenjing. Taizong lauded Liu as the paramount visionary behind the Taiyuan Uprising, denouncing the false charges that had sent him to the block. The emperor posthumously restored Liu's original offices and his title as Duke of Lu, conferred upon him the highest ministerial dignity of Sikong, bestowed thirty qing of prime land upon his surviving family, and permitted his eldest son, Liu Shuyi, to inherit the nobility title of Duke of Shan (Shan Guogong). Furthermore, Taizong decreed that Liu Wenjing's ancestral spirit tablet and portrait be installed in the imperial ancestral temple, granting him eternal sacrifice alongside Taizong himself, washing away a decade of monumental injustice.

Major Activities

Architect of the Taiyuan Uprising and Strategic Grand Design The Taiyuan Uprising was the bedrock of the Tang dynasty. While Li Yuan remained paralyzed by fear and hesitation, Liu Wenjing demonstrated monumental strategic vision, presenting Li Shimin with the complete operational roadmap—to seize Guanzhong, take Chang'an, and conquer the empire—while sitting in a death row prison cell. In practice, he forged imperial decrees to mobilize recruits and engineered the elimination of Sui loyalists Wang Wei and Gao Junya, demonstrating consummate operational capability as the indisputable architect and prime mover of the Tang founding. ### Solitary Diplomatic Mission to the Turks and Securing the Northern Frontier Liu Wenjing's solo diplomatic mission to the Eastern Turkic Khaganate in 617 was one of the most consequential diplomatic achievements in imperial Chinese history. Confronting Shibi Khagan, Liu deployed persuasive rhetoric and an astute material alliance structure—granting territory to Tang while ceding all captured plunder and captives to the Turks. This stroke converted a lethal northern threat into a decisive ally, securing two thousand elite cavalry and one thousand warhorses that safeguarded the rear of the Tang army and ensured its victorious march on Chang'an. ### Pacification of the Guanzhong Basin and Founding Dynastic Institutions From leading charges to slay Song Laosheng at the Battle of Huoyi to capturing Tongguan and pacifying Chang'an, Liu Wenjing stood at the very core of imperial military and civil operations. Following the fall of the capital, he directed the formulation of court ritual, bureaucratic systems, and palace security, earning recognition from Emperor Gaozu as the second greatest contributor to the founding of the dynasty, trailing only Pei Ji. ### Tragic Martyrdom and Early Tang Institutional Dilemmas Liu Wenjing's tragic demise reflects the classic structural tension between absolute imperial sovereignty and over-mighty founding generals. As Li Shimin's premier strategic counselor, Liu was an early casualty in the subterranean factional conflict between the conservative elder statesmen backing Crown Prince Li Jiancheng and the rising military generals of the Prince of Qin's circle. His deathbed cry—"The fine bow is broken, the hunting hound is boiled"—remains an indelible indictment of imperial ingratitude and court paranoia.

Personal Relations

• Brother: Liu Wenqi, served as Attendant-in-Ordinary with Regular Access; executed alongside Liu Wenjing.
• Brother-in-Law: Li Mi, supreme leader of the Wagang rebel army during the late Sui.
• Eldest Son: Liu Shuyi, inherited the title of Duke of Shan following Taizong's rehabilitation, married Taizong's daughter Princess Guangming; later executed for treasonous conspiracy.
• Second Son: Liu Shuyi, appointed Opening an Office with the Three Excellencies following rehabilitation; later executed. ### Sovereign, Ministers, and Comrades - Emperor Gaozu of Tang (Li Yuan): Founding emperor; granted Liu an iron certificate exempting him from two capital crimes, yet succumbed to Pei Ji's slander and executed him.
• Emperor Taizong of Tang (Li Shimin): Lifelong comrade and sovereign; recognized by Liu as a genius in youth; fought desperately to save Liu's life in 619; officially exonerated Liu in 629 and decreed his perpetual sacrifice in the imperial temple.
• Pei Ji: Intimate friend in Jinyang; later alienated by rivalry over court supremacy; delivered the fatal slander to Gaozu that orchestrated Liu's execution.
• Xiao Yu and Li Gang: Senior ministers who courageously defended Liu's innocence before Gaozu.
• Yin Kaishan: Field general at Qianshuiyuan whose reckless insubordination caused the disaster. ### Rivals and Diplomatic Counterparts - Shibi Khagan: Eastern Turkic ruler, persuaded by Liu to ally with Tang and provide 2,000 cavalry.
• Wang Wei and Gao Junya: Sui deputy commanders in Taiyuan, arrested and executed by Liu.
• Song Laosheng: Senior Sui general, defeated and slain by Liu and Li Shimin at Huoyi.
• Xue Ju and Xue Rengao: Western Qin rulers, adversaries during the Qianshuiyuan campaigns.

Historical Assessment

Traditional Dynastic Chronicles and Tang-Song Historians - Emperor Taizong (Li Shimin): "He is no ordinary mortal! His magnanimity resembles that of Emperor Gaozu of Han, and his martial genius matches that of Cao Cao. Though young, he is a heaven-sent genius!"

• *Emperor Taizong (Imperial Edict of Rehabilitation, 629)*: "Liu Wenjing was endowed with an expansive, chivalrous spirit and acute strategic intellect. He joined us in the bitter hardships of our beginnings and assisted in founding our great cause. Though disaster sprang from domestic quarrels and guilt was manufactured from suspicion, the foundation of our altars originated in his prime design. It is fitting that his ancient titles be restored to manifest our grand statutes."
• *Liu Xu et al. (Old Book of Tang, Vol. 57, Biographies 7)*: "Possessing an expansive intellect and grand founding merits, Liu Wenjing was envied by the prime minister and suffered cruel injustice. When Taizong ascended the throne, he washed away ancient grievances and granted posthumous honors. That he was granted sacrifice in the imperial temple—was that not fitting?!... Liu Wenjing seized the cosmic hour, designed grand plans, exercised brilliant wisdom, and achieved glorious merit. That the mediocre and cowardly Pei Ji sat above him provoked his fury, leading to his destruction—how tragic!"
• *Song Qi and Ouyang Xiu (New Book of Tang, Vol. 88, Biographies 13)*: "Liu Wenjing's talents crowned the age; he first advocated the grand design and achieved founding honors. Though he suffered from impatience, his great merits cannot be erased. Emperor Gaozu was blinded by personal favorites, listening to the slander of a mediocre minister to execute a pillar of state; among emperors misapplying judicial punishment, none was worse than this!"
• *Sima Guang (Comprehensive Mirror for Aid in Government, Vol. 187): "When Gaozu took the throne, Pei Ji enjoyed peerless favor. Liu Wenjing was proud of his merits, and his resentment showed in word and deed. Pei Ji slandered him, and he was put to death. Standing before execution, Liu uttered an impassioned lament; all under heaven knew his innocence." ### Ming and Qing Dynasty Commentaries - Wang Fuzhi (Reflections on the Comprehensive Mirror for Aid in Government, Vol. 20)*: "Liu Wenjing first advocated the grand cause, achieving merit that matched heaven and earth, yet died from the slander of a petty concubine, the poison of Pei Ji, and the suspicion of Gaozu. When Tang Gaozu killed Liu Wenjing, he was not merely killing Liu; he was killing the chief strategist of Li Shimin! Gaozu secretly feared Taizong's martial prowess, and Liu Wenjing bore the brunt of that suspicion. How tragic!"
• *Zhao Yi (Notes on the Twenty-Two Dynastic Histories)*: "Among early Tang meritorious ministers, Liu Wenjing was the prime strategist of the uprising, performing immense service for Tang, yet was slaughtered in a single morning over drunken words. Though Taizong and Xiao Yu pleaded for him, they could not save him. Later commentators universally blame Gaozu for listening to Pei Ji's slander, unaware that Gaozu secretly dreaded Taizong's brilliance and sought to clip his wings." ### Modern Scholarly Perspectives - Modern historians of the Sui-Tang transition emphasize that Liu Wenjing was one of the most brilliant grand strategists of imperial China. His strategic roadmap drafted in prison established the foundational geopolitical policy of "securing Guanzhong before conquering the realm." His solitary mission to the Turks exemplified extraordinary diplomatic courage and statecraft.
• Recent historiographical scholarship analyzes the Liu Wenjing affair as an early structural symptom of the existential factional struggle between Emperor Gaozu's conservative civil bureaucracy, Crown Prince Li Jiancheng's faction, and Prince of Qin Li Shimin's military apparatus. As Li Shimin's premier political mentor, Liu Wenjing's execution was an early attempt by the imperial center to curb the autonomy of the Qin Prince's headquarters, setting in motion the escalations that culminated in the Xuanwu Gate Incident.