Emperor Ai of Tang
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.
Kuizhou
Kuizhou was part of Former Shu, founded by Wang Jian as part of the aftermath of the dissolution of the Tang dynasty: Wang was in control of Kuizhou in 907, when the Tang dynasty formally is considered to have ended. Kuizhou was part of Later Tang (one of the Five Dynasties which succeeded each other in control to the north of China), after its conquest of Former Shu, in a southern extension of power.