Changzhou is a prefecture-level city in southern Jiangsu province of China. It was previously known as Yanling, Lanling, Jinling, and Wujin. Located on the southern bank of the Yangtze River, Changzhou borders the provincial capital of Nanjing to the west, Zhenjiang to the northwest, Wuxi to the east, and the province of Zhejiang to the south.