Instruct: Given a question, retrieve relevant documents that answer the question.
Query: When did Li Deyu serve as chancellor to the Tang Dynasty?
Li Deyu (; 787 – January 26, 850), courtesy name Wenrao (文饒), formally the Duke of Wei (衛公), was an official of the Chinese dynasty Tang Dynasty, serving as a chancellor during the reigns of brothers Emperor Wenzong and Emperor Wuzong and (briefly) their uncle Emperor Xuānzong. He was the leader of the so-called Li Faction in the decades-long Niu-Li Factional Struggles, and was particularly powerful during Emperor Wuzong's reign, dominating the court scene and guiding policies during the campaigns against the crumbling Huigu Khanate and against the warlord Liu Zhen. After Emperor Wuzong's death, Emperor Xuānzong, who had long despised him for his hold on power, had him demoted and banished, where he died in exile.
Li Xi or Li Qi (李谿 per the "Zizhi Tongjian" and the "History of the Five Dynasties" or 李磎 per the "Old Book of Tang" and the "New Book of Tang") (d. June 4, 895), courtesy name Jingwang (景望), nicknamed Li Shulou (李書樓), was an official of the Chinese Tang Dynasty, serving briefly as a chancellor during the reign of Emperor Zhaozong. With imperial power dwindling, Li Xi's fellow chancellor Cui Zhaowei, who associated with the warlords Li Maozhen, Wang Xingyu, and Han Jian, encouraged Li Maozhen, Wang, and Han to march on the capital Chang'an. Once the three warlords arrived in Chang'an, they put Li Xi and his fellow chancellor Wei Zhaodu to death.
Emperor Wuzong died in 846 and was succeeded by his uncle Emperor Xuānzong. As Emperor Xuānzong despised Li Deyu for his hold on power, he had Li Deyu removed from his chancellor post and sent out of the capital. Li Hui, meanwhile, remained as chancellor and oversaw the building of Emperor Wuzong's tomb, but in 847 was also sent out of the capital to serve as the military governor of Xichuan Circuit (西川, headquartered in modern Chengdu, Sichuan). That winter, with Li Deyu accused of having wrongly killed Wu Xiang (吳湘) on charges of corruption and forced marriage with a commoner — a case that both Li Hui and Zheng Ya were both involved in reviewing and affirming the death sentence of — Li Hui was demoted to be the governor (觀察使, "Guanchashi") of Hunan Circuit (湖南, headquartered in modern Changsha, Hunan) and prefect of its capital Tan Prefecture (in modern Changsha, Hunan). Emperor Xuānzong was then set to further give him the empty title of "Taizi Binke" (太子賓客), an advisor to the Crown Prince (there being no crown prince at the time) and having his office at the eastern capital Luoyang, when an imperial attendant objected to it as being an overly lenient punishment. Li Hui was thereafter demoted to be the prefect of Fu Prefecture (撫州, in modern Fuzhou, Jiangxi). (It was from Emperor Xuānzong's edict that it could be attested that Li Hui carried the title of Duke of Longxi, which was not otherwise mentioned in his biographies.)
Pei Yaoqing (; 681–743), courtesy name Huanzhi (渙之), formally Marquess Wenxian of Zhaocheng (趙城文獻侯), was a poet and politician of the Chinese Tang dynasty, serving as a chancellor during the reign of Emperor Xuanzong. He had friendly relationship with fellow chancellor Zhang Jiuling, and when another chancellor, Li Linfu, managed to convince Emperor Xuanzong that both Zhang and Pei were engaging in factionalism, both were removed, although Pei continued to serve in important positions in the imperial administration until his death in 743. He was known for improving the food transportation system between the capital Chang'an and the eastern capital Luoyang, obviating the need for the emperor to periodically move between the two capitals.
Emperor Xuanzong of Tang (; 8 September 685 – 3 May 762), also commonly known as Emperor Ming of Tang or Illustrious August, personal name Li Longji, also known as Wu Longji () from 690 to 705, was the seventh emperor of the Tang dynasty in China, reigning from 713 to 756 C.E. His reign of 43 years was the longest during the Tang dynasty. In the early half of his reign he was a diligent and astute ruler. Ably assisted by capable chancellors like Yao Chong, Song Jing and Zhang Yue, he was credited with bringing Tang China to a pinnacle of culture and power. Emperor Xuanzong, however, was blamed for over-trusting Li Linfu, Yang Guozhong and An Lushan during his late reign, with Tang's golden age ending in the Anshi Rebellion.
Li Yu (; 937 – 15 August 978), before 961 known as Li Congjia (李從嘉), also known as Li Houzhu (李後主; literally "Last Ruler Li" or "Last Lord Li"), was the third ruler of the Southern Tang state during imperial China's Five Dynasties and Ten Kingdoms period. He reigned from 961 until 976, when he was captured by the invading Song Dynasty armies which annexed his kingdom. He died by poison on orders of Emperor Taizong of Song after 2 years essentially as an exiled prisoner.
In 734, Li Linfu was made the minister of rites (禮部尚書, "Libu Shangshu") and was further given the designation "Tong Zhongshu Menxia Sanpin" (同中書門下三品), making him a chancellor "de facto", serving alongside Pei Yaoqing and Zhang Jiuling. By 736, he, who gained further favor from Emperor Xuanzong by flattering the emperor, was in serious conflict with the blunt Zhang, over a number of matters:Li Linfu thus made accusations to Emperor Xuanzong that Zhang and Pei were engaging in factionalism. Around the new year 737, Emperor Xuanzong removed Pei and Zhang from their chancellor posts, making them "Chengxiang" (丞相)—the heads of the executive bureau of government (尚書省, "Shangshu Sheng") instead, posts not considered chancellor posts. Niu was made chancellor to replace them, serving with Li Linfu, who was given the office formerly held by Zhang, "Zhongshu Ling" (中書令), the head of the legislative bureau (中書省, "Zhongshu Sheng"). This was often viewed by traditional historians as the turning point of Emperor Xuanzong's reign, which up to that point was considered a golden age in Chinese history, toward a path of degeneration. The Song Dynasty historian Sima Guang, in his "Zizhi Tongjian", for example, commented:
This is a timeline of the Tang dynasty, which covers a period of roughly 289 years, from 618, when the dynasty was founded, to 907, when the last Tang emperor was deposed by the warlord Zhu Wen, who established the Later Liang dynasty, inaugurating the period of Five Dynasties and Ten Kingdoms. Information on areas and events relevant to the Tang dynasty such as the Wu interregnum, when Wu Zetian established her own Zhou dynasty, and other realms such as the Sui dynasty, Tibetan Empire, Three Kingdoms of Korea, Nanzhao, Japan and steppe nomads are also included where necessary.
After the official fall of the Tang dynasty in 907, some members of its ruling house of Li managed to find refuge in the south of China, where their descendants founded the Southern Tang dynasty in the year 937. This dynasty continued many of the traditions of the former great Tang dynasty, including poetry, until its official fall in 975, when its ruler, Li Yu, was taken into captivity. Importantly for the history of poetry, Li survived another three years as a prisoner of the Song dynasty, and during this time composed some of his best known works. Thus, including this "afterglow of the T'ang dynasty", the final date for the Tang Poetry era can be considered to be at the death of Li Yu, in 978.
Zhu Wen, originally a salt smuggler who had served under the rebel Huang Chao, surrendered to Tang forces. By helping to defeat Huang, he was granted a series of rapid military promotions. In 907 the Tang dynasty was ended when Zhu Wen, now a military governor, deposed the last emperor of Tang, Emperor Ai of Tang, and took the throne for himself (known posthumously as Emperor Taizu of Later Liang). He established the Later Liang, which inaugurated the Five Dynasties and Ten Kingdoms period. A year later Zhu Wen had the deposed Emperor Ai poisoned to death.
Yang Pu (楊溥) (900 – January 21, 939), formally Emperor Rui of Wu (吳睿帝), known as Emperor Gaoshang Sixuan Honggu Rang (高尚思玄弘古讓皇(帝)) or, in short, Emperor Rang (讓皇, "the emperor who yielded"), while still living during the initial months of succeeding Southern Tang, was the last ruler of the Chinese Five Dynasties and Ten Kingdoms period state Wu, and the only one that claimed the title of emperor. During his reign, the state was in effective control of the regents Xu Wen and Xu Wen's adoptive son and successor Xu Zhigao. In 938, Xu Zhigao forced Yang Pu to yield the throne to him, who then established Southern Tang.
In 738, Li Linfu was made the deputy military governor of Longyou Circuit (隴右, headquartered in Haidong Prefecture, Qinghai), but did not report to Longyou and remained in the capital as chancellor. He was soon also made the military governor of Hexi Circuit (河西, headquartered in Wuwei, Gansu). Meanwhile, he was repeatedly urging Emperor Xuanzong to create Li Mao crown prince, but Emperor Xuanzong hesitated—with Consort Wu having died in 737. Instead, at Gao's urging, Emperor Xuanzong created an older son, Li Yu the Prince of Zhong crown prince instead.
Zhang Ti (236–280), courtesy name Juxian, was an official of the state of Eastern Wu during the late Three Kingdoms period (220–280) of China. He was the last Imperial Chancellor of Wu. In 280, when the Jin dynasty invaded Wu as part of its strategy to reunify China under Jin rule, Zhang Ti led the Wu forces into battle to resist the Jin invasion. He was killed in action during a battle around present-day He and Dangtu counties in Anhui. In the same year, the Wu emperor Sun Hao surrendered to the Jin dynasty, thus bringing an end to the existence of Wu and the Three Kingdoms period.
By 619, Emperor Yang was dead, killed at Jiangdu (江都, in modern Yangzhou, Jiangsu), and Murong Shun, who had been with Emperor Yang at Jiangdu, had returned to the Sui capital Chang'an, then taken over by one of the generals who had rebelled against Emperor Yang, Li Yuan, who had also since then taken the throne and established a new state of Tang as its Emperor Gaozu, still fighting for supremacy of China with many other rebel rulers. Emperor Gaozu negotiated with Murong Fuyun, who had by now recovered the Tuyuhun lands, to attack one of his rivals, Li Gui the Emperor of Liang. Murong Fuyun agreed, and requested that Murong Shun be released. Emperor Gaozu agreed, and Murong Shun was able to return to Tuyuhun. (However, by this time, Murong Fuyun had already created another son to be his crown prince, and it was said that Murong Shun was depressed thereafter.)
The new Later Liang emperor created Li Chu the Prince of Jiyin and moved him from Luoyang to Cao Prefecture (曹州, in modern Heze, Shandong), and put his mansion under heavy guard, with a fence of thorns surrounding it. In 908, he had Li Chu poisoned to death, and gave Li Chu the posthumous name of "Ai" (哀, "lamentable"). In 928, by which time Li Keyong's adoptive son Li Siyuan was ruling as the emperor of Jin's successor state Later Tang (as Emperor Mingzong), which claimed to be the legitimate continuation of Tang Dynasty and which had earlier destroyed Later Liang, Emperor Mingzong's officials suggested that a temple be built to honor Emperor Ai. Emperor Mingzong had such a temple built at Cao Prefecture. In 929, Emperor Mingzong's officials further suggested giving Emperor Ai a more proper (i.e., more Tang-traditional) posthumous name of Emperor Zhaoxuan Guanglie Xiao, with a temple name of Jingzong, but they also pointed out that since Emperor Ai's temple was not among the imperial ancestral temples, a temple name was not proper. Therefore, only the new posthumous name was adopted, and the temple name was not. Traditional histories thus referred to him mostly as Emperor Ai but also at times as Emperor Zhaoxuan.No family recorded in official histories; Song dynasty general Li Gang was claimed to be a descendant through a son named Li Xizhao (李熙照)
Li Zuo was born in 892, at the main palace at the Tang imperial capital Chang'an. His father Emperor Zhaozong was already emperor at that point, and he was Emperor Zhaozong's ninth son. His mother was Consort He, who had previously given birth to an older brother of his, Li Yu, Prince of De, who was Emperor Zhaozong's oldest son.
Emperor Ai of Tang (27 October 89226 March 908), also known as Emperor Zhaoxuan (), born Li Zuo, later known as Li Chu (), was the last emperor of the Tang dynasty of China. He reigned—as but a puppet ruler—from 904 to 907. Emperor Ai was the son of Emperor Zhaozong.
Liu Bei (; ; 161 – 10 June 223), courtesy name Xuande, was a warlord in the late Eastern Han dynasty who founded the state of Shu Han in the Three Kingdoms period and became its first ruler. Despite early failings compared to his rivals and lacking both the material resources and social status they commanded, he gathered support among disheartened Han loyalists who opposed Cao Cao, the warlord who controlled the Han central government and the figurehead Emperor Xian, and led a popular movement to restore the Han dynasty through this support. Liu Bei overcame his many defeats to carve out his own realm, which at its peak spanned present-day Sichuan, Chongqing, Guizhou, Hunan, and parts of Hubei and Gansu.
The short reigns of Emperor Wu's grandsons, Xiao Zhaoye and Xiao Zhaowen (his first son predeceased him), were dominated by Xiao Luan, Emperor's Wu's first cousin. He killed them in turn and crowned himself as Emperor Ming of Southern Qi. Using the government secretaries (典簽官), he slaughtered all the descendants of Emperors Gao and Wu. Emperor Ming soon became very ill and started following Daoism, changing his whole wardrobe to red. He also passed an edict making officials try to find silver fish (銀魚). He died in 498 and was succeeded by his son Xiao Baojuan, who killed high officials and governors at whim, sparking many revolts. The final revolt in 501 started after Xiao Baojun killed his prime minister Xiao Yi, leading his brother Xiao Yan to revolt under the banner of Xiao Baojun's brother who was declared Emperor He of Southern Qi. Xiao Baojun was killed by one of his generals during the siege of his capital at Jiankang, and after a short puppet reign by Emperor He, Xiao Yan overthrew the Southern Qi and established the Liang dynasty.
During Emperor Xuanzong's reign, when Yuan Qianyao served as a chancellor, Li Linfu was a member of the staff of Emperor Xuanzong's crown prince Li Siqian. Yuan had been recommended by Jiang Jiao at the start of his career and had had his grandnephew Yuan Guangcheng (元光乘) marry Jiang's sister. Because of these relations, Yuan's son Yuan Jie (源絜) relayed a plea from Li Linfu to be made "Simen Langzhong" (司門郎中), a low level official at the ministry of justice. Yuan Qianyao, however, did not view Li Linfu highly, and commented, using Li Linfu's nickname, "People who are to serve as "Lang" must have good talent and virtues. Genu is no "Lang"." Several days later, however, he had Li Linfu promoted among the ranks of Li Siqian's staff members. Li Linfu later served as "Guozi Siye" (國子司業), the deputy principal of the imperial university.
In 1368, a Han Chinese revolt known as the Red Turban Rebellion toppled the Mongol Yuan dynasty in China. Zhu Yuanzhang then established the Ming dynasty, ruling as the Hongwu Emperor (r. 1368–1398). It is not clear how much the early Ming court understood the civil war going on in Tibet between rival religious sects, but the first emperor was anxious to avoid the same trouble that Tibet had caused for the Tang dynasty. Instead of recognizing the Phagmodru ruler, the Hongwu Emperor sided with the Karmapa of the nearer Kham region and southeastern Tibet, sending envoys out in the winter of 1372–1373 to ask the Yuan officeholders to renew their titles for the new Ming court.
Quan Deyu (; 759 – September 30, 818), courtesy name Zaizhi (載之), formally Duke Wen of Fufeng (扶風文公), was an official of the Chinese dynasty Tang Dynasty, serving as a chancellor during the reign of Emperor Xianzong.
During the reign of Emperor Xianzong, Li Jifu became chancellor, and it was said that because Li Deyu wanted to avoid appearance of impropriety, he did not serve at the office of the imperial censors or one of the three main bureaus of the imperial government. Rather, he served on the staff of various regional governors. In 816, after the chancellor Zhang Hongjing left the chancellor post and became the military governor of Hedong Circuit (河東, headquartered in modern Taiyuan, Shanxi), Zhang invited Li Deyu to serve as a secretary. In 819, when Zhang returned to the capital Chang'an to pay homage to the emperor and subsequently remained at Chang'an, Li Deyu was made an imperial censor with the title "Jiancha Yushi" (監察御史).
In 822, Li Deyu was himself made a "Zhongshu Sheren", and continued to serve as imperial scholar. He was considered a possible chancellor candidate, as well as Niu. In 823, Emperor Muzong made a chancellor, while Li Deyu was sent out of Chang'an to serve as the governor (觀察使, "Guanchashi") of Zhexi Circuit (浙西, headquartered in modern Zhenjiang, Jiangsu). Li Deyu believed that this was the machination by then-chancellor Li Fengji to squeeze him out so that Niu could be made chancellor, and thereafter resented Niu and Li Fengji even more.
In 823, after Emperor Muzong made Niu Sengru a chancellor, over Li Deyu, who also wanted to be chancellor, Li Deyu believed that it was at Li Fengji's recommendation that Niu was made chancellor over him, and therefore resented both Niu and Li Fengji. (The Song Dynasty historian Sima Guang, the author of the "Zizhi Tongjian", believed that it was because of this resentment that Li Deyu later had his associate Li Yirang (李夷讓), write defamatory remarks about Li Fengji and Li Fengji's associates in the imperial chronicles, which were then adopted into the "Old Book of Tang".)