Zhao Jing was born in 736, during the reign of Emperor Xuanzong. His family was from Wei Prefecture (渭州, in modern Tianshui, Gansu).New Book of Tang, vol. 150 and traced its origins to the royal house of the Warring States period state Zhao. His great-grandfather Zhao Renben served as a chancellor during the reign of Emperor Xuanzong's grandfather Emperor Gaozong, and his grandfather Zhao Yi (趙誼) and father Zhao Daoxian (趙道先) both served in government as well.New Book of Tang, vol. 73 Zhao Jing himself was said to be studious, and in his youth behaved well and did not seek prominence.Old Book of Tang, vol. 138.
