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.
Conquest of the Western Turks
The empire of the Tang Dynasty (June 18, 618 – June 1, 907), successor of the Sui Dynasty, was a cosmopolitan hegemon that ruled one of China's most expansive empires. Raids by the nomadic Khitans and Turks challenged Tang rule, and Tang rulers responded by pursuing strategies of divide and conquer, proxy warfare, tributes, and marriages.