Lianyungang is a prefecture-level city in northeastern Jiangsu province, China. It borders Yancheng to its southeast, Huai'an and Suqian to its south, Xuzhou to its southwest, and the province of Shandong to its north. Its name derives from Lian Island, the largest island in Jiangsu which lies off its coastline, and Yuntai Mountain, the highest peak in Jiangsu, a few miles from the city center, and the fact that it is a port.