The project is located in Shuangyong avenue and Tianyuan road intersection, Jiangning district, Nanjing. It started in October 2018, completed in May 2019, including five road: Mapu street, Gaohu road, Zhuangpai road, Shuanglong avenue, and Tianyuan road, with a total length of 2300m. The main work includes pavement demolition, trench excavation, well inspection and construction, 28 + 10 holes weak electric pipeline laying and pavement construction. Shuanglong avenue was constructed by drag pipes, and the rest of the parts are using open construction.