Gas company business service outlets. The natural gas household system in Yangcun Town, Tianchang City shall be handled at the business service outlets of the gas company. Tianchang, a county-level city in Anhui Province, is hosted by Chuzhou City and located in the east of Anhui Province. It is bordered by Gaoyou City, Yizheng City, Liuhe District and Jinhu County in Jiangsu Province on three sides.