朝阳市
Gao Chongwen was born in 746, during the reign of Emperor Xuanzong. His ancestors were originally from Bohai Commandery (渤海郡, in modern Cangzhou, Hebei), but after relocating to Tang Dynasty's You Prefecture (幽州, in modern Beijing), did not move for seven generations. He himself was born at You Prefecture, and was said to be simple, tolerant, and quiet. In his youth, he served in the army of Pinglu Circuit (平盧, originally headquartered in modern Chaoyang, Liaoning but later moved to Weifang, Shandong).