生平

唐睿宗景雲二年（711年）九月三日（711年10月）出生在東宮之別殿。初名李嗣升，始封陝王，母親楊良媛懷孕時，父親唐玄宗身為太子，據說太平公主不滿，故玄宗一度想要楊氏墮胎，但玄宗炮製墮胎藥時睡著，天神託夢勸阻，幕僚張說得知，於是請求玄宗收回成命，後來玄宗登基，終於發動先天之變，賜死太平公主。

開元十三年（725年），一日早朝時，玄宗見李亨早衰，就在罷朝後駕臨李亨府，見府中庭宇無人打掃，也無宮女使喚，就令高力士去京兆尹官衙，亟選民間女子入王府。高力士認為現在選秀過甚導致民間喧囂，御史彈劾，不如在掖庭選取。如此選出三人，章敬皇后吳氏是其中一人。開元十四年（726年），吳氏生下他的長子李俶（即唐代宗）。開元十五年（727年），後徙封忠王，初改名為浚，後改名為璵。

開元二十六年（738年）皇太子李瑛為武惠妃所讒，貶庶人廢死；其被立為太子。他的妾室孺人韋氏被立為太子妃。當初唐玄宗欲立太子時，李林甫曾推舉壽王李瑁。李亨成為太子後，李林甫懼怕，陰謀推翻太子。李林甫為構陷太子，誣陷太子妃兄韋堅，使得韋氏被迫與李亨離異，出家為尼。另一位妾室杜良娣的父親杜有鄰被賜死，杜良娣亦被廢為庶人。

（744年）

天寶三載（744年）改名為亨。天寶十四載（755年），安史之亂爆發，天寶十五載（756年）六月，鎮守潼關之大將哥舒翰受楊國忠逼迫出兵討叛，結果大敗，潼關陷落，長安震動，玄宗攜太子、寵妃倉皇逃往成都，行經馬嵬驛（今陝西省興平市西），軍士譁變殺楊國忠，並逼迫玄宗賜死楊貴妃。馬嵬民眾攔阻玄宗請留，玄宗不從。太子李亨留下，隨即往朔方節度使所在地靈州（今寧夏吳忠西北古城鎮），同年農曆七月十二日即位，尊玄宗為太上皇，改元至德，時年四十六歲，是為肅宗。

肅宗在任親王忠王時，即遙領朔方節度大使（親王任節度使稱為大使，李亨為朔方節度大使，並不出閣），在靈州有一定根基。即位後，肅宗將朔方軍集團的郭子儀和李光弼部從河北召至靈武，並聯合回紇，召集朔方節度使15州兵馬，開展大規模的反攻，並約定「克城之日，土地、士庶歸唐，金帛、子女皆歸回紇。」至德二載（757年）正月，安祿山被其子安慶緒殺死。九月，郭子儀率朔方軍騎兵和回紇騎兵收復長安，十二月太上皇玄宗回到長安。乾元元年（758年）九月，肅宗調動各路大軍進攻圍攻相州安慶緒，命宦官魚朝恩為觀軍容宣慰處置使，總攬全局。

玄宗回到長安後，厭惡張皇后與李輔國，常勸肅宗不要寵信他們。李輔國趁機構諂，說玄宗預謀復闢，故軟禁玄宗於西宮甘露殿，並流放高力士到巫州。上元元年（760年），玄宗被迫遷居西內太極宮，並於寶應元年農曆四月初五日（762年5月3日）病逝於西內的甘露殿。不久肅宗也一病不起，頒布詔令讓太子李豫監國。

唐肅宗在位僅六年，死於寶應元年四月十八日（762年5月16日），享年五十一歲。廟號肅宗，謚號文明武德大聖大宣孝皇帝，安葬於唐建陵（今陝西省咸陽市禮泉縣西北15公里處）。

安史之亂事直至唐代宗時，方完全平定，歷八年。

家庭

后妃

• 太子妃韋氏，肅宗元配，生兗王僴、絳王佺、永和公主、永穆公主，天寶年間，李林甫為搆陷肅宗，誣陷其兄韋堅，使得韋氏被迫與肅宗離異，出家為尼，安史之亂時陷於亂軍，至德二載，薨於京城。

皇后

• 張皇后，原為良娣。其弟張清娶肅宗第五女郯國公主為妻。

• 章敬皇后吳氏，肅宗為皇子時的妾室

妃嬪

• 崔妃

• 段婕妤

• 陳婕妤

• 董婕妤（739年—756年12月27日），河內郡人，原為美人，追贈婕妤，至德元載十二月初二日在閿鄉縣逝世，年十八。史書無載，見于其墓誌。

• 張美人

• 裴昭儀

• 鄭良媛，恆王府參軍鄭鍠之妹，母親崔氏，見崔氏墓誌銘

• 見《良娣楊氏等為貴妃詔》另有楊貴妃、于淑妃、于德妃、陳昭儀、崔修儀、閻充儀、陸充容

其他妾室

• 杜良娣，被廢為庶人。

姬侍

• 孫宮人

• 張宮人

• 王宮人

子女

子

• 廣平王→楚王→成王→唐代宗李俶（母章敬皇后吳氏）

• 南陽郡王→趙王→越王李係（母孫宮人）

• 建寧郡王→齊王→承天皇帝李倓（母張宮人）

• 西平郡王→衛王李佖（母王宮人）

• 新城郡王→彭王李僅（母陳婕妤）

• 潁川郡王→兗王李僴（母韋妃）

• 東陽郡王→涇王李侹（母張美人）

• 靈昌郡王→鄆王李榮（母宮人）

• 襄王李僙（母裴昭儀）

• 杞王李倕（母段婕妤）

• 召王李傀（或為唐代宗子，母崔妃）→蜀王

• 興王→恭懿太子李佋（母張皇后）

• 定王李侗（母張皇后）

• 宋王李僖（母宮人）

粗體字為追贈

女

《新唐書》記載唐肅宗共有7位女兒，和政公主神道碑稱永和公主為「八妹」，只知漏載永穆公主，是否有其她女兒漏載，已無法考証。根據相關記載，蕭國公主和和政公主皆被稱為「第二女」，除和政公主神道碑記蕭國公主為其姐姐外，孰對孰錯，無從推斷。

• 第某女，宿國公主（先封為長樂公主，下嫁豆盧湛）

• 第二女，蕭國公主（先封為寧國公主，下嫁鄭巽，又嫁薛康衡，最後與回紇英武可汗和親）

• 第三女，和政公主（728年出生，先封為和政郡主，母章敬皇后吳氏，下嫁柳潭）

• 第五女，郯國公主（729年出生，先封為大寧郡主，下嫁張清，薨於貞元年間）

• 第六女，紀國公主（李淑，字上玄，先封為宜寧公主，下嫁鄭沛，薨於元和年間）

• 第八女，永和公主（母韋妃，先封為寶章公主，下嫁王詮，薨於大曆年間）

• 第某女，郜國公主（先封為延光公主，下嫁裴徽，又嫁蕭升）

• 第某女，永穆公主（母韋妃，記載於《舊唐書》）

• 第某女（755年—？），母張皇后，僅知759年在世，後事不詳

影視作品

大唐榮耀: 由王勁松扮演

Background

Li Sisheng was born in 711, during the second reign of his grandfather Emperor Ruizong, as the third son of his father, then the Crown Prince, Li Longji, who would later become Emperor Xuanzong. His mother Consort Yang Guipin (posthumously Empress Yuanxian) was from the imperial clan of the preceding Sui dynasty. Her great-grandfather Yang Shida (楊士達) was a high -level official during Sui and had been given the title Prince of Zheng (鄭王). Her father Yang Zhiqing (楊知慶) was a general of the imperial guards during Tang. At the time that Consort Yang Guipin was pregnant with Li Sisheng, Li Longji was locked in a power struggle with his aunt, Emperor Ruizong's sister Princess Taiping, and it was said that Princess Taiping had placed many associates in the crown prince's palace to spy on Li Longji and that she did not want him to have many sons. (He already had two by that point—Li Sisheng's older brothers Li Sizhi, later named Li Cong (by Consort Liu) and Li Siqian, later named Li Ying (by Consort Zhao).) Li Longji was worried that, if Princess Taiping found out that Yang Guipin was pregnant, Princess Taiping's associates might harm him, and he spoke to a close associate, Zhang Shuo, stating: "A powerful individual did not want me to have many sons. I am afraid that this woman would become a target. What do you think?" Li Longji began to prepare an herbal stew that, in traditional Chinese medicine, was believed to be able to induce an abortion, but as he did so, fell asleep and had a dream that a god descended and overturned the ding holding the stew. When he told Zhang this as well, Zhang responded, "This is heaven's will. You should not worry." (As a result, later on in life, Li Sisheng would feel personally indebted to Zhang Shuo.)

In 712, Emperor Ruizong passed the throne to Li Longji, who took the throne as Emperor Xuanzong, but Emperor Ruizong retained actual power as Taishang Huang (retired emperor). Shortly after Emperor Xuanzong took the throne, Emperor Ruizong, as retired emperor, was the one who created Li Sisheng the Prince of Shan. (After Emperor Xuanzong suppressed Princess Taiping's associates in 713 and forced her to commit suicide, Emperor Ruizong transferred imperial authorities to Emperor Xuanzong and was no longer involved in politics.) Li Siqian, whose mother Consort Zhao was then Emperor Xuanzong's favorite concubine, was created crown prince. Li Sisheng, although his mother alive, was raised by Emperor Xuanzong's wife Empress Wang, who was herself sonless. It was said that in his childhood, he was kind and studious, and Emperor Xuanzong was pleased with him. Emperor Xuanzong thus made the officials He Zhizhang (賀知章), Pan Su (潘肅), Lü Xiang (呂向), Huangfu Bin (皇甫彬), and Xing Su (邢璹) accompany him in his studies.

In 724, due to the machinations of Consort Wu, who had by then become Emperor Xuanzong's favorite concubine, Empress Wang was deposed, and she died shortly after. Thereafter, Consort Wu began a campaign, in association with the chancellor Li Linfu, to have her own son Li Qing the Prince of Shou made crown prince, but was not able to initially succeed. Meanwhile, in 726, Li Sisheng's title was changed to the Prince of Zhong, and his name was changed to Li Jun. In 728, his own mother Consort Yang Guipin died.

In 729, when there was a Khitan and Kumo Xi incursion, Li Jun was put in titular command of the army sent to repel the Khitan and the Xi, with Emperor Xuanzong's second cousin Li Hui (李褘) the Prince of Xin'an in actual command of the army. After Li Hui defeated the Khitan and the Xi, Li Jun was nevertheless rewarded with the honorific title of Situ (司徒), one of the Three Ducal Ministers. In 735, his name was changed to Li Yu.

In 737, due to the machinations of Consort Wu, Li Ying, along with his brothers Li Yao (李瑤) the Prince of E and Li Ju (李琚) the Prince of Guang, was accused of crimes, deposed, and forced to commit suicide. Consort Wu and Li Linfu continued to lobby for Li Qing (whose name had been changed to Li Mao at this point) to be created crown prince, but with Consort Wu having died herself later in 737 and Emperor Xuanzong believing that Li Yu was capable, he hesitated. At the urging of the eunuch Gao Lishi, who believed that one of his older sons should be made crown prince, Emperor Xuanzong created Li Yu crown prince in 738 and renamed him Li Shao. (As it was quickly pointed out that he thus shared a name with the Liu Song crown prince Liu Shao, who killed his father and usurped the throne, his name was then quickly changed to Li Heng and would not change again thereafter.) One of his consorts, Consort Wei, the sister of the official Wei Jian (韋堅), was created crown princess.

As crown prince

As Li Heng's ascension to be crown prince was against Li Linfu's wishes, and also because Wei Jian, who drew favor from Emperor Xuanzong due to his abilities to increase revenues for the imperial treasury, was becoming a rival to Li Linfu at court, Li Linfu looked for ways to incriminate both Wei and Li Heng. In 746, when the official Yang Shenjin (楊慎矜), at Li Linfu's instigation, reported to Emperor Xuanzong that, one night, Li Heng met Wei while both were sightseeing, and shortly after, Wei met a friend of his, the general Huangfu Weiming (皇甫惟明) at a Taoist temple, Li Linfu used these incidents to accuse Wei and Huangfu of secretly pledging allegiance to Li Heng and planning to remove Emperor Xuanzong to replace him with Li Heng. Wei and Huangfu were arrested and interrogated by Yang, Wang Hong (王鉷), and Ji Wen (吉溫), but Emperor Xuanzong, who did not want the case to further explode into a major incident although he believed Li Linfu's accusations, demoted Wei and Huangfu out of the capital and, for the time being, stopped the investigation. However, when Wei Jian's brothers Wei Lan (韋蘭) and Wei Zhi (韋芝) submitted a defense of their brother Wei Jian later in 746—and the defense cited words from Li Heng—Emperor Xuanzong was incensed. Li Heng, in fear, divorced Crown Princess Wei and asked for the Wei brothers to be punished. The Wei brothers, along with a number of their associates—including the former chancellor Li Shizhi, Wei Bin (韋斌), Wei Jian's nephew Li Quan (李琄) the Prince of Xue, Pei Kuan (裴寬), and Li Qiwu (李齊物), were all demoted. (In 747, at Li Linfu's instigation, the Wei brothers, Huangfu, and Li Shizhi were all forced to commit suicide.)

Later in 746, yet another incident again nearly brought disaster to Li Heng. One of Li Heng's other consorts, Consort Du, was a daughter of the official Du Youlin (杜有鄰). Consort Du's brother-in-law Liu Ji (柳勣) had a dispute with the Du family and falsely accused them of using witchcraft in favor of Li Heng. Li Linfu had Ji Wen interrogate Liu, and Ji implicated Liu in the alleged plot as well. Du Youlin, Liu, and Liu's friend Wang Zeng (王曾) were all caned to death, and Li Heng felt compelled to expel Consort Du from the household as well. Li Linfu also used this case to have two other officials friendly with Liu, Li Yong (李邕) and Pei Dunfu (裴敦復), executed by caning.

In 747, when one of Emperor Xuanzong's favorite generals, An Lushan, visited the capital Chang'an to pay respect to Emperor Xuanzong, An, who was not Han, initially refused to bow to Li Heng—pretending that he was only loyal to Emperor Xuanzong and to no one else, including the crown prince, and that he did not even know what a crown prince was. Only after Emperor Xuanzong explained what a crown prince is—the reserve emperor, to succeed him later—was An willing to bow to Li Heng. This caused Emperor Xuanzong to favor An even more, but also later caused An to be apprehensive of whether Li Heng would bear continued resentment toward him over the incident.

Later in 747, Li Linfu tried to use yet another case to undermine Li Heng. The general Wang Zhongsi, who was raised with Li Heng inside the palace on account of the fact that his father Wang Haibin (王海賓) had died in battle in service to the empire, was accused of interfering with the campaign of another general, Dong Yan'guang (董延光), against Tibetan Empire. Li Linfu broadened the accusation to an accusation that Wang was planning to start a coup to overthrow Emperor Xuanzong and replace him with Li Heng. At the intercession of another general, Geshu Han, however, Wang was spared from death, and Li Heng was not implicated. It was said that during this time period, Li Linfu made other attempts to undermine Li Heng, but with Gao Lishi and Zhang Shuo's son Zhang Ji (張垍), who had married Li Heng's sister Princess Ningqing, protecting Li Heng, Li Heng escaped unharmed each time.

As of 754, the chancellor in power was Yang Guozhong (Li Linfu having died in 752), the cousin of Emperor Xuanzong's then-favorite concubine Yang Guifei (unrelated to Li Heng's mother). Yang Guozhong and An were locked in a power struggle, and Yang repeatedly accused An of plotting a rebellion, but Emperor Xuanzong would not believe it, although Li Heng eventually came to agree with Yang Guozhong. In late 755, with Yang Guozhong repeatedly trying to provoke An into a rebellion, An finally did, from his base at Fanyang (范陽, in modern Beijing). After the rebellion started, Emperor Xuanzong briefly considered making Li Heng regent, but at the pleas of Consort Yang and her three sisters (who were fearful that Li Heng would act against them if he had regent powers), did not actually do so.

By summer 756, An had declared a new state of Yan as its emperor, and his forces were approaching Chang'an. On July 14, 756, Emperor Xuanzong, with Yang Guozhong suggesting that they flee to Jiannan Circuit (劍南, headquartered in modern Chengdu), abandoned Chang'an and fled with Gao Lishi, Yang Guozhong, Wei, Li Heng, Consort Yang, and her family. The following day, July 15, the imperial guards accompanying the emperor, angry at Yang Guozhong, rose at Mawei Station (馬嵬, in modern Baoji, Shaanxi) and killed him and forced Emperor Xuanzong to kill Consort Yang as well. Emperor Xuanzong then poised to continue to head toward Jiannan. The people in the Mawei region tried to persuade Emperor Xuanzong not to continue on—believing that Chang'an could be recaptured. Emperor Xuanzong asked Li Heng to try to comfort the people. Once Li Heng left Emperor Xuanzong's presence, however, Li Fuguo and Li Heng's sons Li Tan the Prince of Jianning and Li Chu the Prince of Guangping, persuaded Li Heng not to follow Emperor Xuanzong to Jiannan—arguing that with the physical barriers between Chang'an and Jiannan, that once they had left the region, Chang'an could no longer be captured. Li Heng agreed and had Li Chu report this to Emperor Xuanzong. Emperor Xuanzong agreed with Li Heng's decision, but he himself continued on to Jiannan. Li Heng, escorted by a small number of guard soldiers commanded by Li Tan, then headed to the border city of Lingwu. With the army at Lingwu pressuring him to take imperial title, Li Heng declared himself emperor on August 13 (as Emperor Suzong). When news of this reached Emperor Xuanzong in Jiannan, Emperor Xuanzong recognized Emperor Suzong as emperor and took the title of Taishang Huang (retired emperor), although he continued to exercise some imperial authority—including, for example, issuing an edict that posthumously honored Emperor Suzong's mother Consort Yang as Empress Yuanxian. (Some historians, including the modern historian Bo Yang, believed that Emperor Xuanzong's continued issuance of edicts, while not on the surface conflicting with Emperor Suzong's authority, caused Emperor Suzong pressure to try to recapture Chang'an as quickly as possible to avoid any contention for the throne—either in the form of Emperor Xuanzong himself resuming imperial authority or in the form of another imperial prince rising to defeat Yan.)

Reign

Emperor Suzong, once he became emperor, set his eyes on recapturing Chang'an from Yan forces, as Yan forces faced heavy resistance from the people of the Guanzhong region (i.e., the region around Chang'an) and was not able to keep the region under firm control. (By this point, An Lushan had been assassinated and succeeded by his son An Qingxu, as the emperor of Yan.) However, an immediate attempt to do so, commanded by the chancellor Fang Guan, was defeated by the Yan forces near Chang'an with heavy losses. Meanwhile, around the same time, Emperor Suzong's brother Li Lin the Prince of Yong tried to mount a challenge against him, seeking to effectively secede with the region south of the Yangtze River, but was quickly defeated and killed by forces loyal to Emperor Suzong. Emperor Suzong's court was also itself filled with internal struggles, with Li Fuguo aligned with Emperor Suzong's favorite concubine Consort Zhang, in opposition to Li Chu, Li Tan, and Emperor Suzong's trusted advisor Li Mi. In early 757, after Li Tan repeatedly accused Li Fuguo and Consort Zhang of corruption, Li Fuguo and Empress Zhang in turn falsely accused him of trying to assassinate Li Chu, who was older than he was, in order to become the heir. Emperor Suzong, in anger, ordered Li Tan to commit suicide, which drew fear from Li Chu and Li Mi. Li Chu considered assassinating Li Fuguo and Consort Zhang, but at Li Mi's urging, stopped his plans to do so.

Emperor Suzong, finding it difficult to recapture Chang'an just with his own troops, then entered into an alliance with Huige's Bayanchur Khan Yaoluoge Moyanchuo, where Huige forces arrived at Emperor Suzong's then-headquarters at Fengxiang (鳳翔, in modern Baoji) to join the elite Tang forces recalled from the Anxi Circuit and the Western Regions (Xiyu). (Emperor Suzong did so by promising that the Huige forces would be permitted to pillage the Chang'an region once it was recaptured.) Li Mi suggested that these forces be used to attack Yan's power base at Fanyang first, to root out the possibility of a Yan recovery. Emperor Suzong chose not to do so and decided to attack Chang'an first, with Li Chu in command of the joint forces. The forces recaptured Chang'an in fall 757, allowing Emperor Suzong to rebuild his administration in the capital. (Huige forces were set to pillage Chang'an, but Li Chu bowed to the Huige prince commanding Huige forces to plead to delay the pillage—pointing out that if pillaging were carried out, the people of the eastern capital Luoyang, then serving as Yan's capital, would resist heavily, and asking that Huige pillage Luoyang instead. The Huige prince agreed.) After Emperor Suzong recaptured Chang'an, Li Mi resigned and became a hermit, leaving Li Fuguo, Consort Zhang (who was then created empress), and Li Chu the lead figures at court, and Li Fuguo, in command of the imperial guards, would soon have such paramount powers that even Emperor Suzong was afraid of offending him. Empress Zhang, meanwhile, wanted to make her son Li Shao (李佋) crown prince, but Emperor Suzong, believing Li Chu, who was his oldest son, to be capable and accomplished, created him crown prince instead and changed his name to Li Yu. Emperor Suzong also welcomed Emperor Xuanzong back from Jiannan and housed him at a palace converted from Emperor Xuanzong's old residence as an imperial prince, Xingqing Palace (興慶宮).

A month after Chang'an was recaptured, Tang and Huige forces recaptured Luoyang as well, and Luoyang suffered heavy pillaging by Huige forces. An Qingxu fled to Yecheng and took up position there, but most Yan territory resubmitted to Tang, and war appeared to be poised to end. To cement the alliance with Huige, Emperor Suzong also gave his daughter Princess Ningguo in marriage to Yaoluoge Moyanchuo.

In 758, however, one of the major Yan generals who had submitted to Tang, Shi Siming, claiming that there had been a plot by Emperor Suzong and the Tang general Li Guangbi, to have his subordinate Wu Cheng'en (烏承恩) assassinate him, re-rebelled and advanced south. In spring 759, he engaged the Tang forces then sieging An Qingxu at Yecheng, and while the initial battle was indecisive, the Tang forces panicked during the battle and collapsed, allowing the siege of Yecheng to be lifted. Shi Siming then led An Qingxu into a trap and killed him, taking over as the emperor of Yan and further advancing south to recapture Luoyang, again making it Yan's capital. However, his further attempts to advance against Chang'an was blocked by Li Guangbi, and the Yan and Tang forces went into a stalemate. While the stalemate was continuing, in 760, after the eunuch Xing Yan'en (邢延恩) reported to Emperor Suzong that the general Liu Zhan (劉展) was disobeying orders, and that Liu's name was in mystical prophecies, Emperor Suzong accepted Xing's suggestion to find a way to eliminate Liu. After Liu found this out, he was forced into rebellion in late 760; he had successes against other Tang generals and controlled the lower Yangtze region for several months until he was defeated by another Tang general, Tian Shen'gong (田神功).

Meanwhile, Emperor Xuanzong settled into a routine at Xingqing Palace, with Chen Xuanli (陳玄禮) and Gao Lishi attending to him. Also often attending to him were his sister Li Chiying (李持盈) the Princess Yuzhen, the lady-in-waiting Ru Xianyuan (如仙媛), and the eunuchs Wang Cheng'en (王承恩) and Wei Yue (魏悅). The imperial musicians often played for him, and he often climbed up Changqing Tower (長慶樓) to receive well wishes from the populace. He also often held feasts for generals and people from Jiannan, with Li Chiying and Ru serving as hostesses. Emperor Xuanzong's attendants looked down at Li Fuguo. To retaliate, Li Fuguo began to try to convince Emperor Suzong that Emperor Xuanzong and his attendants were plotting to seize power back. In 760, with Emperor Suzong's tacit, although not explicit, approval, on one occasion when Emperor Xuanzong was out riding, Li Fuguo intercepted him and forced him to move back to the main palace. Even on that occasion, however, Gao would not submit to Li Fuguo and even yelled at Li Fuguo to force him to get off his horse and to escort Emperor Xuanzong on foot, along with Gao. Soon after Emperor Xuanzong was forcibly moved, Li Fuguo forced Chen to retire, Li Chiying to return to her temple (she had become an ordained Daoist nun in 711), and exiled Gao, Wang, Wei, and Ru. Emperor Suzong then had his daughters Princesses Wan'an and Xianyi attend to Emperor Xuanzong, but Emperor Xuanzong, having lost his trusted attendants, became silent and ill. For the time being, Emperor Suzong frequently visited Emperor Xuanzong, but he himself grew ill as well and rarely visited. He also regretted permitting Li Fuguo to take these actions and considered killing him, but hesitated and ultimately did not do so because Li Fuguo commanded the imperial guards. Indeed, thereafter, Li Fuguo became minister of defense, and Emperor Suzong was often forced to comply with his wishes as far as governance was concerned, although Emperor Suzong rebuffed his wishes to become chancellor.

In 761, Shi Siming was assassinated and succeeded by his son Shi Chaoyi, and it was said that other Yan generals, who were originally Shi Siming's equals, began to disobey Shi Chaoyi's orders. Tang forces thus were able to beat back the Yan forces but were not able to dislodge Shi Huaiyi from Luoyang, and final victory over Yan would not come in Emperor Suzong's lifetime.

In summer 762, Emperor Xuanzong died. Emperor Suzong was bedridden by this point, and it was said that he was so saddened by Emperor Xuanzong's death that his illness further advanced. He thus granted regent powers on Li Yu. By this point, Empress Zhang and Li Fuguo were no longer allies, and Empress Zhang summoned Li Yu, wanting an alliance with him to kill Li Fuguo and his subordinate Cheng Yuanzhen. Li Yu refused, pointing out that this would cause alarm to the very-ill Emperor Suzong. Empress Zhang then entered into an alliance with Li Yu's younger brother Li Xi (李係) the Prince of Yue, and they tried to set a trap for Li Fuguo, with 200 strong eunuchs loyal to her and Li Xi ready to act against Li Fuguo. On May 14, 762, she issued an order in Emperor Suzong's name, summoning Li Yu into the palace. However, Cheng received this news and reported this to Li Fuguo and Li Yu, and Cheng then escorted Li Yu to the imperial guard headquarters. Imperial guards commanded by Li Fuguo and Cheng then entered the palace and arrested Empress Zhang, Li Xi, and their associates. It was said that with Emperor Suzong resting at Changsheng Hall (長生殿), the soldiers dragged Empress Zhang and the attending ladies in waiting and eunuchs away from his presence. Emperor Suzong was said to be left alone without attendants. He died on May 16, only 13 days after Emperor Xuanzong's death. Li Fuguo executed Empress Zhang, Li Xi, and Li Xian (李僩) the Prince of Yan and then declared Li Yu emperor (as Emperor Daizong).

Relations with Muslims

Faced with the devastating An Lushan Rebellion, Emperor Suzong wrote a desperate letter to Al-Mansur requesting for armed assistance. Al-Mansur responded by sending 4000 men to China in order to aid the beleaguered emperor. In return they were allowed to settle down permanently in China after the rebellion was repressed. Some of them married local Chinese people. This contributed to the creation of the earliest Muslim communities of China.

Chancellors during reign

• Wei Jiansu (756–757)

• Cui Yuan (756–758)

• Fang Guan (756–757)

• Pei Mian (756–757)

• Cui Huan (756–757)

• Li Lin (757–758)

• Miao Jinqing (757–759, 760–762)

• Zhang Gao (757–758)

• Wang Yu (758–759)

• Lü Yin (759, 759–760)

• Li Xian (759)

• Li Kui (759–761)

• Diwu Qi (759)

• Xiao Hua (761–762)

• Pei Zunqing (761–762)

• Yuan Zai (762)

Family

Consorts and Issue:

• Crown Princess, of the Wei clan of Jingzhao (皇太子妃 京兆韋氏; d. 757)

　• Li Xian, Prince Yan (兗王 李僴; d. 762), sixth son

　• Princess Yonghe (永和公主; d. 768), eighth daughter

　　• Married Wang Quan of Langya, Duke Xintai (琊瑯 王詮), and had issue (three sons, one daughter)

　• Princess Yongmu (永穆公主), personal name Shu (淑)

　　• Married Wei Hui of Jingzhao (京兆 韋會), and had issue (one daughter)

• Empress, of the Zhang clan (皇后 張氏; d. 762)

　• Li Zhao, Crown Prince Gongyi (恭懿皇太子 李佋; 753–760), 12th son

　• A daughter (b. 755)

　• Li Dong, Prince Ding (定王 李侗; d. 762), 13th son

• Empress Zhangjing, of the Wu clan (章敬皇后 吳氏; 713–730)

　• Li Yu, Daizong (代宗 李豫; 726–779), first son

　• Princess Hezheng (和政公主; 728–764), second daughter

　　• Married Liu Tan of Hedong (河東 柳潭; d. 768) in 750, and had issue (five sons, three daughters)

• First Imperial Concubine, of the Pei clan (昭儀 裴氏)

　• Li Guang, Prince Xiang (襄王 李僙; d. 791), ninth son

• Fairness Lady, of the Chen clan (婕妤 陳氏)

　• Li Jin, Prince Peng (彭王 李僅; d. 783), fifth son

• Fairness Lady, of the Duan clan (婕妤 段氏)

　• Li Chui, Prince Qi (杞王 李倕; d. 798), tenth son

• Beauty, of the Zhang clan (美人 張氏)

　• Li Ting, Prince Jing (涇王 李侹; d. 784), seventh son

• Lady, of the Sun clan (宮人 孫氏)

　• Li Xi, Prince Yue (越王 李系; d. 762), second son

• Lady, of the Zhang clan (宮人 張氏)

　• Li Tan, Emperor Chengtian (承天皇帝 李倓; d. 757), third son

• Lady, of the Wang clan (宮人 王氏)

　• Li Bi, Prince Wei (衛王 李佖), fourth son

• Unknown

　• Li Rong, Prince Yun (鄆王 李榮), eighth son

　• Li Xi, Prince Song (宋王 李僖), 14th son

　• Princess Su (宿公主)

　　• Married Doulu Zhan of Changli (昌黎 豆盧湛)

　• Princess Xiao (蕭公主), second daughter

　　• Married Zheng Xun of Xingyang (滎陽 鄭巽)

　　• Married Xue Kangheng of Hedong (河東 薛康衡)

　　• Married Bayanchur Khan (d. 759) in 758

　• Princess Tan (郯公主; 729–786), fifth daughter

　　• Married Zhang Qing, Duke Fanyang (張清), and had issue (one son)

　• Princess Ji (紀公主; 733–807), personal name Shu (淑), sixth daughter

　　• Married Zheng Pei of Xingyang (滎陽 鄭沛; 738–796) in 759, and had issue (one son, one daughter)

　• Princess Gao (郜公主; d. 790)

　　• Married Pei Hui of Hedong (河東 裴徽; d. 756), and had issue (one son)

　　• Married Xiao Sheng of Lanling (蘭陵 萧升), and had issue (five sons, one daughter)

Ancestry