Single crystal road, Jintan district. According to Baidu map, the address of the weight loss training institution seized in Jintan District is located in the 4800 square meter sports center of Single Crystal Road in Jintan District. Jintan District, which belongs to Changzhou City, Jiangsu Province, is located in the south of Jiangsu Province. It is the geographical center of Nanjing, Shanghai and Hangzhou, with a total area of 975.46 square kilometers.