Pei Yaoqing

Biography

Ancestral Nobility and the Child Prodigy Pei Yaoqing, courtesy name Huanzhi, was born in the second year of the Yonglong era (681) during the reign of Emperor Gaozong of Tang in Jishan County, Jiangzhou. His ancestral roots lay in the legendary county of Wenxi in Hedong, belonging to the prestigious Eastern Branch (Dongjuan Fang) of the Hedong Pei clan—one of the four supreme aristocratic clans of medieval China whose members had monopolized high ministerial and military offices since the Han, Wei, and Northern and Southern Dynasties. His father, Pei Shouzhen, was an illustrious statesman under Emperor Gaozong and Empress Wu Zetian, celebrated throughout the realm for his stern personal integrity and profound legal acumen, serving as Secretariat Drafter (Zhongshu Sheren), Junior Minister of the Court of Agriculture (Sinong Shaoqing), and Prefect of Bin and Ning Prefectures. His elder brother, Pei Ziyu, attained the office of Policy Reviewer (Jishizhong). The Pei brothers preserved an austere family tradition of filial devotion, fraternal harmony, and classical scholarship that became a universal model for Tang aristocratic society. Pei Yaoqing possessed extraordinary intellectual precocity. Under the rigorous tutelage of his father and elder brother, he devoured the Confucian classics and historical treatises at a tender age, displaying an astonishing photographic memory and effortless rhetorical lucidity. In the first year of the Zaichu era (689) under Wu Zetian, the court issued an imperial rescript summoning child prodigies from across the provinces. The eight-year-old Pei Yaoqing recited the entirety of the Nine Classics without faltering a single character while expounding upon their philosophical principles, easily qualifying for the Imperial Child Prodigy Examination (Tongzi Ke). In the second year of Tianshou (691), at the tender age of ten, Pei Yaoqing officially passed the examination with the highest honors, creating an immense sensation in the eastern capital of Luoyang. Upon reaching his twenty-first year and capping ceremony around 701 (the first year of the Chang'an era), Pei Yaoqing commenced his civil career as Proofreader in the Palace Library (Mishu Zhengzi), collating imperial manuscripts. The Prince of Xiang, Li Dan (the future Emperor Ruizong), who was renowned for his patronage of classical learning, recognized Pei's exceptional talents and appointed him Editorial Attendant (Dianqian) in his princely household. In this delicate post, Pei acted with meticulous propriety, quiet discretion, and organizational brilliance, winning the lifelong respect and confidence of the future sovereign. Following Emperor Ruizong's restoration to the imperial throne in the first year of Jingyun (710), the monarch rewarded his former staff officer by promoting Pei Yaoqing to Administrator of the National University (Guozi Zhubu), shortly transferring him to Judicial Investigator of the Supervisorate of the Crown Prince's Household and Collator in the Secret Archives (Chong Mi'ge Xiaoli). In the first year of Xiantian (712), following the accession of the young and dynamic Emperor Xuanzong (Li Longji), Pei advanced to Vice Director in the Ministry of Personnel Evaluation (Kaogong Yuanwailang) and Vice Director of the Right Bureau (Yousi Yuanwailang), overseeing civil audits and imperial administrative dossiers. In 719 (Kaiyuan 7), he was named Director in the Ministry of War (Bingbu Langzhong). In all these central ministries, Pei was celebrated for his incorruptibility, unyielding adherence to statutory law, and dignified composure, earning widespread praise as a statesman destined for the supreme chancellorship. ### The Fengshan Sacrifices and Imperial Admonition By the mid-720s, Emperor Xuanzong's diligent governance had ushered in an era of unprecedented peace, domestic affluence, and international prestige across the Tang Empire. To manifest this cosmic triumph and celebrate dynastic glory before heaven and earth, the emperor decreed the performance of the sacred Fengshan Sacrifices at Mount Tai in the thirteenth year of the Kaiyuan era (725). The sovereign ordered all provincial prefects to attend the ceremony. Along the grand imperial route spanning Henan and Shandong, regional governors and magistrates, eager to curry favor with the throne, levied ruinous special taxes upon the populace, conscripted tens of thousands of corvée laborers to level roads and erect lavish temporary palaces, and competed to present rare beasts, exotic delicacies, and gold-embroidered silk furnishings for the imperial retinue. Pei Yaoqing, then serving as Prefect of Jizhou (modern Juye County, Shandong), situated directly along the western approach to Mount Tai, witnessed with profound sorrow the immense devastation wrought upon local peasants who were forced into financial ruin to fund these bureaucratic extravagances. Disregarding the lethal peril of offending an exalted emperor flushed with triumph, Pei Yaoqing drafted a searing, several-hundred-word memorial and dispatched it directly to the imperial traveling court before Xuanzong's arrival in Shandong. In this historic memorial, Pei Yaoqing eloquently declared: "The solemn performance of the Fengshan Sacrifices is the supreme ceremonial rite by which a sage sovereign renders gratitude to Heaven and Earth and petitions for blessings for the state. Yet the sacred essence of this rite lies fundamentally in ensuring that all under Heaven receive its blessings and all common people bathe in its benevolence. If, for the sake of theatrical pomp and lavish banquets, local magistrates levy crushing exactions and exhaust the labor of the populace, filling the countryside with grief and flight, then 'if the people are severely disrupted and burdened, the rites cannot be proclaimed a successful achievement!' (Ren huo zhongrao, ze bu zuyi gaocheng)." The memorial implored the Son of Heaven to enforce austere frugality, strictly forbid competitive regional tributes, and spare the agrarian populace from catastrophic fiscal extraction. Emperor Xuanzong was deeply shaken upon reading Pei's words. Recognizing the transcendent moral courage and agrarian compassion behind the memorial, the emperor immediately ordered a dramatic curtailment of ceremonial ostentation and prohibited excessive regional tributes. Following the triumphant completion of the sacrifices, the imperial entourage halted at Songzhou for a grand victory banquet honoring all escorting officials. During the festivities, Emperor Xuanzong turned joyfully to his chief counselor, Grand Chancellor Zhang Yue, remarking with profound emotion: "In previous years, whenever We dispatched imperial commissioners to tour the realm and inspect the conduct of provincial magistrates, their reports were often distorted and untruthful. Now, having undertaken this pilgrimage to Mount Tai, We have witnessed the truth with Our own eyes! Wang Qiu, Prefect of Huaizhou, offered nothing beyond the statutory rations of livestock, proving he does not trade in self-serving sycophancy. Cui Mian, Prefect of Weizhou, furnished tents and pavilions of plain coarse hemp without a single scrap of brocade, instructing Us in the supreme virtue of frugality. And Pei Yaoqing, Prefect of Jizhou, submitted a memorial of several hundred words boldly declaring that 'if the people are severely disrupted, the rites cannot be proclaimed a successful achievement!' What pure, unadulterated devotion to the people! We have personally transcribed Yaoqing's memorial and placed it on the right side of Our imperial throne, gazing upon it day and night to discipline Our own heart!" Following this public acclaim, Pei Yaoqing's reputation as the preeminent virtuous magistrate of the empire was universally established. He was transferred to serve as Prefect of Xuanzhou and subsequently Prefect of Jizhou (in Hebei), where he dredged irrigation canals, pacified litigation, and relieved peasant burdens. In 729 (Kaiyuan 17), he was recalled to the capital to serve as Vice Minister of Revenue (Hubu Shilang), shortly being named Magistrate of Chang'an County (Chang'an Ling). Administering the sprawling imperial metropolis teeming with haughty imperial princes, powerful eunuchs, and corrupt aristocrats, Pei governed with razor-sharp impartiality, enforcing statutory regulations without fear or favor, causing the haughtiest magnates to curb their lawless excesses. ### The Guanzhong Famine Crisis and the Staged Grain Transport Revolution By the early 730s, the Tang Empire confronted an existential, systemic logistical crisis that threatened the survival of the dynasty—the perennial Guanzhong grain famine. Ever since the Sui and Tang dynasties established their political capital in Chang'an, the agricultural yield of the arid Guanzhong basin had proved fundamentally incapable of sustaining the gargantuan concentration of imperial palaces, aristocratic lineages, metropolitan bureaucracies, and elite imperial guard units, whose numbers exceeded a million consumers. The survival of the central government depended entirely upon the annual waterborne transport of millions of bushels of tribute grain collected from the fertile breadbaskets of the Yangtze, Huai, and central plains river basins. However, the traditional water transport system was plagued by catastrophic geological and technological bottlenecks:

1. Ruinous Attrition of Long-Distance Direct Navigation: Southern grain barges from Jianghuai ascended the Bian Canal to the Yellow River, attempting to sail directly upstream toward the Wei River. The wide, flat-bottomed southern barges were structurally unsuited for the rapid currents, shifting shoals, and terrifying vortexes of the middle Yellow River, resulting in the annual destruction of hundreds of vessels and the drowning of thousands of boatmen;
2. The Lethal Chokepoint of Sanmenxia: The ultimate graveyard of imperial shipping was the Sanmenxia (Three Gates Gorges) on the Yellow River. Flanked by vertical granite precipices, the river compressed into three lethal torrents known as the Gate of Man, the Gate of the Gods, and the Gate of Demons, studded with jagged submerged reefs like the Pillar of Stone (Dizhu). Heavily laden grain barges attempting to navigate these rapids were routinely smashed to splinters against the rocks, their grain sinking into the muddy riverbed;
3. The Humiliation of "Chasing Food in Luoyang": Whenever regional droughts or floods struck northern China, the imperial granaries in Chang'an emptied within weeks. Emperors Taizong, Gaozong, Empress Wu, and Xuanzong were repeatedly forced to vacate Chang'an, leading the court, the civil bureaucracy, and tens of thousands of starving palace women on agonizing, hundreds-of-miles journeys east to Luoyang simply to consume the grain stored in the eastern granaries. This perennial humiliation earned the Tang monarchs the derisive moniker of "Emperors in Search of Food" (Zhu Shi Tianzi). In the winter of the twenty-first year of Kaiyuan (733), severe famine once again struck Guanzhong. The court was in panic, and Emperor Xuanzong prepared to issue an imperial decree ordering the court to evacuate to Luoyang once more. At this crucial moment, Vice Minister of Revenue Pei Yaoqing stepped forward, submitting his master treatise Memorial on the Transport Policy of Jianghuai and Henan. Pei boldly argued: "Evacuating to Luoyang is merely an ignominious temporary expedient that exhausts the state and distresses the populace; it is entirely unworthy of an enduring imperial dynasty! That Guanzhong starves is not due to a lack of grain across the realm, but rather because our transport mechanisms are profoundly defective! If we adapt to the natural topography, abandon direct single-voyage navigation, and institute a system of staged transit, multi-tier granary hubs, and synchronized water-and-land carriage, our granaries will remain perpetually full, and the Son of Heaven will never again need to look eastward in humiliation!" Emperor Xuanzong was captivated by Pei's strategic vision, immediately appointing him Commissioner for Water Transport of Jianghuai and Henan (Jianghuai Henan Zhuanyunshi), vesting him with absolute executive authority to overhaul the empire's transport apparatus. Personally inspecting thousands of leagues of riverways along the Yellow, Bian, Luo, and Wei Rivers, Pei Yaoqing devised and constructed the world's first multi-tier, staged transshipment granary network:
4. First Nexus (Heyin Granary): Constructed at the confluence of the Bian Canal and the Yellow River near modern Xingyang. Flat-bottomed southern grain barges navigating north from Jianghuai sailed only as far as Heyin, discharging their grain into vast granary silos. The southern boatmen and their fragile vessels were immediately discharged to sail back south along the canal, entirely eliminating the catastrophic perils of navigating the treacherous Yellow River;
5. Second Nexus (Jijin and Hanjia Granaries): Specialized northern river craft and veteran Yellow River watermen loaded the grain from Heyin, transporting it upstream to the regional depots at Luoyang and the Jijin Granary east of the Sanmenxia rapids;
6. Third Nexus (Sanmen Granary and Overland Portage Bypass): Directly flanking the impassable Sanmenxia gorges, Pei constructed the Jijin Granary on the eastern shore and the Sanmen Granary on the western shore. To circumvent the deadly Pillar of Stone rapids entirely, Pei mobilized labor to chisel an eighteen-li overland mountain road along the rocky bluffs. Transporting the grain from the eastern granary across the overland bypass via ox-carts and pack animals, the grain was securely reloaded onto fresh river vessels at the western Sanmen Granary;
7. Fourth Nexus (Taiyuan and Yongfeng Granaries): West of the gorges, where the Yellow River widened and currents slowed, the barges ascended into the Wei River, delivering grain directly into the massive Taiyuan Granary at Huayin and the Yongfeng Granary within Chang'an. The implementation of this scientific, synchronized logistical network produced a staggering administrative revolution: southern ships never entered the Yellow River, northern ships never entered the Bian Canal, and every crew operated exclusively within familiar waters. Within just three years of operation (734–736), Pei Yaoqing's staged granary system accumulated an unprecedented reserve of *seven million bushels (dan) of grain in the capital granaries! Furthermore, by eliminating the massive shipwreck losses of the past, the system saved over three hundred thousand strings of cash (min) in statutory transport fees! Imperial granaries in Guanzhong overflowed with grain, reducing the market price of grain to mere pennies per peck, permanently terminating the century-long nightmare of imperial exoduses to Luoyang and securing the economic bedrock of the Kaiyuan golden age. Upon the triumphant completion of the transport network, fawning subordinates whispered to Pei Yaoqing: "Your Excellency has achieved a miracle of statecraft! You have saved more than three hundred thousand strings of imperial cash. Why not present these surplus funds to the emperor's private privy purse to showcase your extraordinary merit and secure immediate promotion?" Pei Yaoqing’s countenance darkened with righteous fury. He sternly rebuked them: "The wealth of the empire is extracted from the sweat and blood of common farmers; saving on transport expenses was intended to alleviate public suffering! To present these public funds to the sovereign to purchase personal imperial favor is the despicable conduct of corrupt extortionists—how could I ever stoop to such villainy!" Pei immediately memorialized the throne, requesting that every single coin of the 300,000 strings be assigned to local prefectural governments as the official "Harmonious Market Fund" (Heshifei). This capital was utilized to purchase local surplus textiles and provisions at fair market prices during harvest gluts, simultaneously stimulating merchant trade and insulating impoverished peasants against merchant exploitation. The entire empire marveled at his spotless integrity. ### Chancellorship with Zhang Jiuling and Resistance to Li Linfu In the first month of the twenty-second year of Kaiyuan (734), Emperor Xuanzong, overwhelmed with gratitude for Pei Yaoqing's logistical triumph, issued an imperial rescript elevating him to Chancellor (Tong Zhongshu Menxia Pingzhangshi) and Vice Director of the Chancellery (Huangmen Shilang). In July of the same year, he was promoted to Director of the Chancellery (Shizhong, Chief Executive of the Left/Chancellery). Pei Yaoqing entered into a close ideological and administrative partnership with Grand Chancellor Zhang Jiuling, the Director of the Secretariat (Zhongshuling). Both men hailed from illustrious scholarly traditions, possessing incorruptible moral rectitude and transcendent administrative brilliance. For three glorious years (734–736), Pei Yaoqing and Zhang Jiuling governed the empire in harmonious synergy. They strictly curbed the nepotistic requests of imperial princes and royal favorites, enforced rigorous standards in civil service examinations, purged corrupt magistrates, and adamantly opposed reckless foreign military adventures championed by ambitious frontier generals. Under their enlightened administration, imperial governance attained an unprecedented standard of justice and efficiency, leading contemporaries and later historians to venerate Zhang Jiuling and Pei Yaoqing as the "Twin Incomparable Virtuous Chancellors" of the Kaiyuan era. However, as Emperor Xuanzong grew older and increasingly succumbed to complacency, the cunning, ruthless courtier Li Linfu (then Minister of Revenue) ingratiated himself with the sovereign and his favored consort, Consort Wu. Viewing Zhang Jiuling and Pei Yaoqing as insurmountable obstacles to his ambition for absolute power, Li Linfu relentlessly searched for opportunities to subvert them. ### The Yan Tingzhi Conspiracy and the Fall from Supreme Power In the autumn of the twenty-fourth year of Kaiyuan (736), a bureaucratic scandal detonated in the capital. Yan Tingzhi, the Vice Minister of the Secretariat, had divorced his wife years earlier; she subsequently remarried Wang Yuanyan, the Prefect of Weizhou. Wang Yuanyan was soon arrested by the Three Judicial Offices on charges of massive bribery. Moved by past sentiment, Yan Tingzhi secretly interceded with judicial officials on Wang Yuanyan's behalf. Li Linfu, having planted spies throughout the ministries, seized upon this misstep with lethal precision. He instructed his inner palace confidants to report to Emperor Xuanzong that Yan Tingzhi was subverting imperial justice to protect corrupt criminals. When Xuanzong interrogated his chancellors, Zhang Jiuling, recognizing Yan Tingzhi's exceptional administrative talents and noting that he had long been divorced from the lady, defended him warmly: "Tingzhi had already severed all martial ties with his former wife; his plea was made out of general administrative compassion, not personal corruption." Xuanzong retorted irritably: "Though divorced, can one guarantee there remained no private lust?" Li Linfu poured fuel on the fire, whispering to Xuanzong that Zhang Jiuling and Yan Tingzhi were forming a treacherous political faction (adang). Because Pei Yaoqing shared an intimate friendship with Zhang Jiuling and supported his assessments, Li Linfu tarred Pei with the same brush of factional collusion. Emperor Xuanzong, weary of Zhang Jiuling's persistent moral lecturing, succumbed to Li Linfu's machinations. On the day of Renyin in the eleventh month of 736, the emperor stripped both Zhang Jiuling and Pei Yaoqing of their chancellorships: Zhang was demoted to Right Chancellor (an honorary sinecure), while Pei was named Left Chancellor of the Department of State Affairs (Shangshu Zuo Chengxiang*) and enfeoffed as Marquis of Zhaocheng. With the purge of these two noble statesmen, Li Linfu assumed supreme, autocratic control of the Tang government, commencing sixteen disastrous years of sycophancy, administrative decay, and frontier mismanagement that culminated in the An Lushan Rebellion. ### Steadfast Moral Courage in Retirement Although relegated to an honorary sinecure within the Department of State Affairs, Pei Yaoqing remained unyielding in his devotion to the state. Whenever fundamental issues of human life or military security arose, he stepped forward to offer fearless admonitions:
8. Plea on Behalf of Yang Jun and the Abolition of Summer Floggings: In 737 (Kaiyuan 25), Yang Jun, Prefect of Yizhou, was convicted of grand corruption and sentenced to death. Seeking to display imperial clemency, Emperor Xuanzong commuted the death sentence, ordering instead that Yang Jun be stripped naked in court, subjected to sixty heavy strokes of the rod, and exiled to the lethal malarial jungles of Guzhou. Pei Yaoqing submitted a profound legal memorial: "Prefects and magistrates are not base clerks; they are the 'father and mother officials' of their prefectures, looked upon by the common populace as models of civilizing virtue. To force an imperial magistrate to strip naked and endure brutal public whipping before the crowd is excessively humiliating to public order! Furthermore, in the blazing heat of high summer when all living things flourish, to strike a man sixty heavy blows will cause his flesh to rot and rupture, ensuring his agonizing death within days! Thus the sovereign's mercy in sparing him from execution becomes an empty illusion. I pray that henceforth, whenever death sentences are commuted to floggings, all corporal punishments be entirely suspended during the sweltering summer months, postponing execution until autumn and winter so that the emperor's virtue of cherishing life may become a tangible reality!" Emperor Xuanzong was deeply moved by this humane jurisprudence, immediately revoking Yang Jun's flogging and codifying the suspension of summer corporal punishments into dynastic statute;
9. Prescient Warning on the Arrogance of General Gai Jiayun: In 740 (Kaiyuan 28), the elite military commander Gai Jiayun returned in triumph from the western frontiers, having crushed the Turgesh confederation and captured Suluk Khagan. Emperor Xuanzong showered him with honors, appointing him Military Commissioner of Hexi and Longyou with orders to conduct campaigns against the Tibetan Empire. Intoxicated by his fame, Gai Jiayun lingered in the capital for months, indulging in continuous revelry, drinking feasts, and womanizing, refusing to depart for his border command. While the entire court fawned over the victorious general, Pei Yaoqing alone warned the sovereign: "Gai Jiayun certainly possesses physical vigor and ferocious bravery; yet observing his boastful rhetoric and insolent arrogance, I am deeply anxious that he is entirely incapable of conducting grand strategic affairs! Autumn has arrived, the frontier horses are fat, and the Tibetan threat is acute. An army commander holds the lives of tens of thousands in his hands; yet Gai Jiayun abandons himself to drunken banquets day and night, basking in self-satisfied ease. If Your Majesty does not replace him, you must issue an urgent imperial rescript imposing a strict departure deadline and demanding rigorous military discipline, lest our armies suffer catastrophic ruin!" Emperor Xuanzong dispatched an urgent messenger to expel Gai Jiayun to his command. Exactly as Pei Yaoqing had foretold, the haughty, ill-prepared Gai Jiayun was utterly outmaneuvered and routed by Tibetan forces at Shibao Fortress shortly thereafter, suffering heavy casualties and returning in disgrace. The court stood in awe of Pei's prophetic strategic clarity. ### Twilight Years and Posthumous Veneration In the first month of the first year of the Tianbao era (742), Emperor Xuanzong renamed the Left and Right Chancellors of the Department of State Affairs to Left and Right Executive Presidents (Shangshu Puye). Pei Yaoqing was named Right Executive President, soon advancing to Left Executive President (Shangshu Zuo Puye), standing as the formal head of the Six Ministries. In the second year of Tianbao (743), this revered architect of Tang prosperity passed away peacefully at his private residence in Chang'an at the age of sixty-three. Upon receiving the tragic news, Emperor Xuanzong was stricken with grief, recalling with deep nostalgia Pei's incorruptible service and his immortal triumph in filling the imperial granaries. The sovereign suspended court audiences, posthumously conferred upon him the supreme rank of Grand Tutor to the Crown Prince (Taizi Taifu), and commanded the Court of Imperial Sacrifices to bestow the revered posthumous name "Wenxian" (Cultured and Exemplary), authorizing a state funeral with full ministerial honors in his ancestral cemetery in Hedong. Throughout his forty years of public service, though he had controlled millions in imperial funds and stood at the pinnacle of power, Pei Yaoqing accumulated no vast estates or luxury mansions, living with austere simplicity and leaving behind a pristine family legacy. His sons carried on his tradition of civic excellence: Pei Fan rose to Governor-General of Liangzhou, Pei Hong served as Vice Director of the Palace Library, Pei Zong served as Director in the Ministry of Civil Personnel, and Pei Gao attained the office of Policy Reviewer.

Major Activities

Invention of the Staged Granary Grain Transport System Pei Yaoqing's singular contribution to Chinese institutional history was the complete transformation of the imperial grain transport apparatus:

1. Abolition of Inefficient Direct Navigation: He dismantled the ancient Sui-Tang practice of forcing fragile southern transport craft to navigate the entire length of the turbulent Yellow River, establishing a rational principle of matching specific vessel types to local river conditions;
2. Engineering the Heyin, Jijin, and Sanmen Logistics Network: By constructing massive transshipment granaries at river junctions and cutting an eighteen-li overland mountain road around the terrifying Sanmenxia gorges, he completely eliminated the chronic shipwreck disasters that had claimed thousands of lives and millions of bushels of grain for generations;
3. Accumulation of Seven Million Bushels of Reserve Grain: In just three years (734–736), his system delivered seven million bushels of tribute grain into Guanzhong, driving grain prices to historical lows and permanently ending the national embarrassment of emperors abandoning Chang'an to "chase food in Luoyang";
4. Creation of the Harmonious Market Fund: Resisting the temptation to enrich the emperor's private privy purse with the 300,000 strings of saved transport funds, he dedicated the entire sum to public market stabilization funds, pioneering humane macroeconomic intervention. ### Enlightened Governance during the Kaiyuan Golden Age 1. Agrarian Advocacy at Mount Tai: His fearless memorial declaring that "if the people are severely disrupted, the rites cannot be proclaimed a successful achievement" curbed imperial extravagance, earning a permanent place on Xuanzong's desk as a governing motto;
5. Partnership with Zhang Jiuling: As Director of the Chancellery, he worked in flawless harmony with Zhang Jiuling to maintain strict civil service standards, suppress court sycophants, and anchor the peak of Kaiyuan governance;
6. Humanitarian Legal Reforms: His intervention in the Yang Jun case established the humane legal precedent barring corporal punishment of officials during the extreme heat of summer;
7. Strategic Military Foresight: His incisive assessment of General Gai Jiayun demonstrated his rare ability to evaluate operational military command beyond superficial battlefield victories.

Personal Relations

• Father: Pei Shouzhen, Secretariat Drafter, Junior Minister of the Court of Agriculture, Prefect of Bin and Ning Prefectures; legendary incorruptible official.
• Elder Brother: Pei Ziyu, Policy Reviewer (Jishizhong); renowned scholar and moral model.
• Cousins: Pei Juqing (Junior Minister of the Court of the Imperial Insignia), Pei Youqing (Sheriff of Luoyang), Pei Qiaoqing (Diarist of the Left), Pei Chunqing (Companion to the Crown Prince).
• Sons: - Pei Yu: Magistrate of Gucheng County. - Pei Sui: Legal Advisor to the Crown Prince. - Pei Fan: Governor-General of Liangzhou. - Pei Hong: Vice Director of the Palace Library. - Pei Zong: Director in the Ministry of Civil Personnel. - Pei Gao: Policy Reviewer (Jishizhong). - Pei Yan: Attendant Gentleman of Communications. ### Political Peers, Allies, and Rivals - Emperor Xuanzong (Li Longji): Revered Pei's administrative genius, keeping his memorial on his desk and elevating him to Chancellor, but later succumbed to Li Linfu's slanders to dismiss him.
• Zhang Jiuling: Grand Chancellor and inseparable political soulmate; co-directed the golden age of Kaiyuan before being dismissed on the same day in 736.
• Yan Tingzhi: Vice Minister of the Secretariat; his private legal intercession for his ex-wife's husband triggered the factional accusations that brought down Zhang and Pei.
• Li Linfu: Arch-rival and villainous chancellor; slandered Pei and Zhang to monopolize state power for sixteen years.
• Gai Jiayun: Celebrated frontier general whose drunken arrogance was denounced by Pei, subsequently suffering catastrophic defeat against Tibet.

Historical Assessment

Tang Dynastic Historians and Imperial Rescripts - Emperor Xuanzong: "Pei Yaoqing, Prefect of Jizhou, submitted a memorial of several hundred words boldly stating that 'if the people are severely disrupted, the rites cannot be proclaimed a successful achievement.' We have placed this text on the right side of Our throne to admonish Ourselves; this is true love for the people."

• Liu Xu in the Old Tang Book: "Wei Zhigu, Lu Huaishen, Yuan Qianyao, Li Yuanhong, Du Xian, Han Xiu, and Pei Yaoqing all possessed towering administrative talent and occupied supreme ministerial office. Some focused on enlightening the sovereign, some on recommending worthy talents, some dispatched their beloved sons to provincial hardships, some terminated unnecessary military colonies in the capital, some refused barbarian bribes, some fiercely impeached treacherous scoundrels, and some expanded the grain transport canals to enrich the state: all established enduring deeds and merits worthy of eternal praise!"
• Song Qi in the New Tang Book: "Pei Yaoqing's administration of grain water transport was planned with consummate perfection. Adapting to the terrain and rivers, though the waterways twisted through a hundred cataracts, the goods moved without a single obstruction. In three years he accumulated seven million bushels and saved three hundred thousand strings of cash; in the annals of Tang water transport, none could ever surpass him." ### Qing Dynasty Political and Economic Thought - Zheng Rikui in Treatise on Grain Water Transport (Caoyi, preserved in Huangchao Jingshi Wenbian): "The art of grain water transport originated with the Qin and was elaborated by the Han; yet at that time, transport grain moved merely within Shandong and Hebei, never reaching as far as the Yangtze and Huai rivers. When the Tang established their capital in Guanzhong, because the terrain was confined and state expenses vast, they annually transported the grain of the southeast to supply the capital metropolis. Following the Yonghui era, these volumes expanded dramatically, and Jianghuai water transport became the supreme burden of the empire. Looking across the entire three centuries of the Tang dynasty, those who excelled in grain water transport were first Pei Yaoqing, and later Liu Yan; yet in truth, Liu Yan merely elaborated and enhanced that which Pei Yaoqing had originally founded."