Longtan Subdistrict is a subdistrict and the county seat of Guiyang County in Hunan, China. The town was formed through the amalgamation of 4 communities of the former Chengguan Town, 3 villages of the former Chengjiao Township, Wutong Village of Renyi Town, Shanbei Village of Zhangshi Town and 3 state-owned farms in 2012. It has an area of 75.1km2 with a population of 52,300 (as of 2012), its seat is at Bazitang Community .[1]