Tangdong
Tangdong Subdistrict (Chinese: 唐洞街道; pinyin: Tángdòng Jiēdào) is a subdistrict and the seat of Zixing City in Hunan, China. The subdistrict was formed in 1989 and merged the former Chengshui Town (Chinese: 程水镇) to it in 2015. It has an area of 153.87 km2 (59.41 sq mi) with a population of 81,100 (as of 2015). Its seat is at Wenfenglu Community (Chinese: 文锋路社区).