Chancellor of the Tang dynasty in the context of "Yao Chong"

The Qian Mausoleum (Chinese: 乾陵; pinyin: Qiánlíng) is a Tang dynasty (618–907) tomb site located in Qian County, Shaanxi Province, China, and is 85 km (53 mi) northwest of Xi'an. Built in 684 (with additional construction until 706), the tombs of the mausoleum complex house the remains of various members of the House of Li, the imperial family of the Tang dynasty. This includes Emperor Gaozong (r. 649–83), as well as his wife, Wu Zetian, who assumed the Tang throne and became China's only reigning female emperor from 690 to 705. The mausoleum is renowned for its many Tang dynasty stone statues located above ground and the mural paintings adorning the subterranean walls of the tombs. Besides the main tumulus mound and underground tomb of Emperor Gaozong and Wu Zetian, there are 17 smaller attendant tombs, or peizang mu. Presently, only five of these attendant tombs have been excavated by archaeologists, three belonging to members of the imperial family, one to a chancellor, and the other to a general of the left guard. The Shaanxi Administration of Cultural Heritage declared in 2012 that no further excavations would take place for at least 50 years.

Emperor Ruizong of Tang (22 June 662 – 13 July 716), personal name Li Dan, also known at times during his life as Li Xulun, Li Lun, Wu Lun, and Wu Dan, was the fifth and ninth emperor of the Chinese Tang dynasty. He was the eighth son of Emperor Gaozong and the fourth son of Emperor Gaozong's second wife Empress Wu. He was wholly a figurehead during his first reign when he was controlled by his mother, and he was the titular and puppet ruler of the Tang Empire from 684 to 690. During his second reign after his mother's death, significant power and influence was exercised by his sister Princess Taiping.

In February 684, Li Dan's mother Empress Wu demoted his older brother Emperor Zhongzong (Li Xian) who had attempted to rule free of his mother and named him emperor (as Emperor Ruizong). Emperor Ruizong, however, was a hollow figurehead under control of his mother and had no real power, even nominally, his name was not included in the issued documents or orders. He was not even able to move freely around his private residence, let alone attend to governmental affairs. From then onwards, the Tang dynasty existed only in name and Empress Dowager Wu ruled China for over six years as quasi-emperor. Empress Wu, was comfortable about the empire being entirely under her control, decided finally to seize the throne, so in October 690 Emperor Ruizong ceded the imperial throne to his mother, who installed herself as empress regnant – the only woman in Chinese history ever to rule with this title. She issued a decree that ended the Tang dynasty and founded the Zhou dynasty. Emperor Ruizong was reduced to the position of crown prince, with the unconventional title of Huangsi (皇嗣, "imperial successor"). In the following years, Empress Wu's nephews Wu Chengsi and Wu Sansi tried to have one of them named heir to the throne, but Wu Zetian resisted these calls. Eventually, in October 698, faced with foreign invasion and dissatisfaction at home, Empress Wu accepted the suggestion of the chancellor Di Renjie and recalled the exiled Li Xian to the capital Luoyang. Soon, Li Dan offered to yield the position of crown prince to his elder brother, and Li Xian became crown prince instead.

Di Renjie (630 – November 11, 700), courtesy name Huaiying (懷英), posthumous name Duke Wenhui of Liang (梁文惠公), was a Chinese politician of the Tang and Wu Zhou dynasties, twice serving as chancellor during the reign of Wu Zetian. He was one of the most celebrated officials of Wu Zetian's reign. Di Renjie is depicted in the Wu Shuang Pu by Jin Guliang.

Li Chéngqián (李承乾) (619 – 5 January 645), courtesy name Gaoming (高明), formally Prince Min of Hengshan (恆山愍王), was a crown prince of the Chinese Tang dynasty. He was Emperor Taizong's oldest son and first crown prince, but was replaced later by his younger brother Li Zhi (the eventual Emperor Gaozong).

Li Chengqian was created crown prince in 626 at the age of eight (by East Asian reckoning), after his father became emperor on 4 September. In his youth, he had a reputation for good judgment, but was also said to be suffering from a foot illness. Later on, he was said to be frivolous, favoring Tujue customs instead of studying about ways to rule an empire. He lost favor in Emperor Taizong's eyes to a younger brother, Li Tai the Prince of Wei. (Both had the same mother, Emperor Taizong's wife Empress Zhangsun.) In 643, in fear that Emperor Taizong was about to depose him in favor of Li Tai, he plotted with the general Hou Junji to overthrow Emperor Taizong. The plot was discovered, and he was deposed and reduced to commoner rank, but Emperor Taizong, believing that Li Tai to be responsible for Li Chengqian's downfall, appointed yet another son, Li Zhi (also by Empress Zhangsun), crown prince instead. Li Chengqian was exiled, and died in exile in January 645, as a commoner under house arrest. He was posthumously granted an imperial prince title during the reign of his grandnephew, Emperor Xuanzong after his grandson Li Shizhi became chancellor.

Song Jing (Chinese: 宋璟; 663 – November 21, 737), posthumous name Duke Wenzhen of Guangping (廣平文貞公), was a Chinese politician of the Tang dynasty and Wu Zhou dynasty, serving as the chancellor during the reigns of Emperor Ruizong and Emperor Xuanzong. He was praised by historians for his insistence on being morally upright, and for being a just administrator of the law during his time as Emperor Xuanzong's senior chancellor.

Zhang Yue (simplified Chinese: 张说; traditional Chinese: 張說; pinyin: Zhāng Yuè) (667 – 9 February 731), courtesy name Daoji (道濟) or Yuezhi (說之), posthumous name Duke Wenzhen of Yan (燕文貞公), was a Chinese historian, military general, poet, and politician of the Tang and Wu Zhou dynasties. He served as chancellor on three separate occasions during the reigns of Emperor Ruizong and under Emperor Xuanzong. He was known for having suggested the transition of Tang central government armed forces from being conscription-based to recruitment-based, and for turning the office of the chancellor into a specialized post with strong executive powers.

Zhang Yue was a well-respected literary figure of his time, and was ranked alongside Su Ting (Duke Wenxian of Xu, another of Emperor Xuanzong's chancellors) as the two great writers of the Kaiyuan era. They were known in unison as 燕許大手筆 ("Immense pen-brushes from Yan and Xu").

Li Linfu (Chinese: 李林甫; pinyin: Lǐ Línfǔ) (died January 3, 753), nickname Genu (Chinese: 哥奴), formally the Duke of Jin (Chinese: 晉公), was a Chinese historian, musician, and politician during the Tang dynasty, serving as a chancellor for 18 years (734–752), during the reign of Emperor Xuanzong—one of the longest terms of service for a chancellor in Tang history, and the longest during Xuanzong's reign.

Li was known for his flattery of the Emperor and skill in the political scene, which enabled him to remain powerful throughout his lengthy duration as chancellor. His treachery in cutting off all routes for all potential political challengers, including false accusations against other officials and the granting of key military commands to non-Han commanders, were blamed for the deterioration of Emperor Xuanzong's reign, which culminated in the An-Shi Rebellion after Li Linfu's death. Xuanzong himself admitted after the An Lushan Rebellion broke out (when Li had died) that Li was most adept at removing political rivals and being jealous of any potential challengers, a factor which resulted in the Tang administration lacking seriously competent officials during the Tianbao era.