Changshu City (Yu for short), alias Yucheng, is located in the south of Jiangsu Province and is a county-level city managed by Suzhou City. It is located in the southeast of Jiangsu Province, bordering the Yangtze River in the north, facing Nantong across the river, bordering Taicang City in the east, Xiangcheng District and Kunshan City in Suzhou City in the south, Xishan District and Jiangyin City in Wuxi City in the west and Zhangjiagang City in the northwest.