What is "dige"

Dige is a town in the south of Shandong province, People's Republic of China, bordering Jiangsu province to the south, and located in the southeast corner of Zaozhuang City. It is under the administration of Yicheng District and is east-southeast of downtown Zaozhuang. In March 2001, the former Ganlugou Township (甘露沟乡) was merged into the town's administrative area.