Xiangping (Chinese: 襄平) is a historical name of Liaoyang, Liaoning province. Xiangping was first mentioned in history as the capital of the Liaodong Commandery in the state of Yan, and the eastern terminus of the Great Wall of Yan established in 284 BC. After the unification of China by the Qin dynasty, Xiangping became the political and cultural center of what is now Northeastern China. From the 4th century onward, Xiangping was successively ruled by the Former Yan and Later Yan. The city was taken by Goguryeo in AD 404 and renamed to Liaodong/Yodong (遼東) City. It saw several major battles during the Goguryeo–Sui War and Goguryeo–Tang Wars before eventually falling to the Tang dynasty.