In the New Book of Tang, vol. 81, in the sixth book of the Column, it is recorded: "Because all those who succeed to the throne of The Emperor of Zhaowai return to the Emperor, they take the King of Sijiang as the King of Xin'an, the King of Si Shu as the King of Guanghan, the King of Simi as the King of Puyang, the King of Si Cao as the Duke of Jiguo, the King of Zhao as the King of Zhongshan, and the King of Wuyang as the Duke of Li." There is a similar account in the Old Book of Tang: "In the twelfth year of the new century (724), King Yi of Sijiang was demoted to the title of King of Xin'an County, King Qiu of Sishu was made the King of Guanghan County, King Chu of Simi was the King of Puyang County, King Zhen of Si Cao was the Duke of Jiguo, King Ju of Zhao was the King of Zhongshan County, and King Of Wuyang County was the Duke of Li. Yi waited and succeeded him as king after the Divine Dragon, and with the title of King of Hulize, he ordered Guizong to change the title. ”
"Succeed to the throne, and return to the emperor and change the title." It was an excuse for Tang Xuanzong to reduce the rights of the clan, just like the purpose of banning the clan relatives in the "Sixteen Houses and Hundred Sun Courtyards", which could only be taken remotely, and could not leave the capital, to prevent a threat to the imperial power. Here are mentioned li qi the king of Guanghan, Li Che the king of Puyang, Li Zhen the duke of Jiguo, and Li Ju the king of Zhongshan, but who is Jizong the prince of Wuyang who was demoted to the duke of Liguo?
We know that one of the kings of Wuyang County in the Tang Dynasty was Li Jiao, and this person was the second son of Li Yuanxiang, the twentieth son of Li Yuan. Li Yuanxiang had seven sons, the eldest son Li Huan was killed and had no queen, and the second son Li Jiao was made the Prince of Wuyang Commandery as the eldest son. Li Jiao was killed during the Wu Zetian period, and his only young son, Li Cong, died on his way to exile in Lingnan. In this way, the long branch of King Jiang and the second branch that replaced the long branch were cut off (this is only recorded in the old and new Tang Books). During the reign of Emperor Zhongzong, Li Qin was used as Li Jiao's stepson to inherit the succession. This history is clearly recorded in the fourth biography of the New Book of Tang: "The seventh son of King Yuanxiang of Jiang, The King of Yongjia, died; The King of Wuyang, the Duke of Yu, and the Empress Dowager, and the Duke of Wuhou. Kyaukzi Cong, with the young stream dead ridge table, buried in Nan'an, the person called its tomb "Tiansun Tomb". Emperor Zhongzong established himself as the king of Qin, and then sealed him with the title of King of Kyao, and even took his disciples to succeed the heirs of the sect, and then he did not attack the king of the county and demoted the duke of Liguo. ”
The consort in the text refers to the son of a brother, commonly known as a nephew. So who among Li Qin's five younger brothers was Li Jiao's son?
The third brother Li Xin was made the Duke of Guogong; the fourth brother Li Han was made the Duke of Yixing County; the fifth brother Li Jiong was made the Duke of Guangping Commandery and the official was the Duke of Lizhou; the sixth brother Li Huang was made the Duke of Julu County; and the seventh brother Li Xian (no historical record). According to several texts, Li Qin was the son of Li Huang, the Duke of Julu County. The Fourteenth Biography of the Sixty-Eighth Column of the Old Book of Tang records: "At the beginning of Zhongxing, Yuan Xiangzi Julu County's Duke Huangzi Qin Si Jiang Wang. In the fourth year of Jinglong, he married Wang Renjiao's daughter to the Qianniu General", and according to other investigations, Li Qin was made the Prince of Jiang in 705-710 (this title was transferred by Emperor Taizong of Tang's great-grandson Li Yi in 710), the King of Wuyang Commandery from 710 to 724, and the Duke of Li in 724. Li Qin married The Daughter of Wu Zhuangyuan and Ren Jiao, the Duke of Qi, who was also the sister of Emperor Xuanzong of Tang's original empress Wang Ling (who died in 724 after being deposed into the Cold Palace). In addition, when Li Qin was serving as the Qianniu general in Chang'an, Li Bai visited his general's residence and wrote an essay "Early Summer in the Residence of General Jiang and Zhu Kunji Sent Fu Bazhi to the South of the Jiangnan Sequence", in which Li Qin was called "General Uncle" by Li Bai and praised as "General Uncle, Yingluo Gaigu, Yingmingdong God, Heavenly King Guizong, birth of a virtuous son." Li Bai and Li Qin's son called brother Daodi (Kun wei brother, Ji wei brother) It seems that the relationship between Li Bai and the Li Qin family is still good.