Zhangjiagang belongs to Suzhou City, Jiangsu Province. Zhangjiagang City is located on the south bank of the lower reaches of the Yangtze River, in the southeast of Jiangsu, bordering the Yangtze River in the north and Taihu Lake in the south. It is only 20 kilometers away from Shanghai/KLOC-0 (only 98 kilometers after the expressway was opened in 2003), 80 kilometers away from Nanjing 180 kilometers away from Suzhou (only 58 kilometers after the first-class highway was opened in 2004).