Ping'an Township is located in the northwest corner of Fengjie County, at the junction of Fengjie, Wuxi and Yunyang counties, east of Huangyang Township of Wuxi County, south of Zhuyuan Township, west of Shatuo Township of Yunyang County, north of Wenfeng Township of Wuxi County, and 86 kilometers away from the county seat. Ping'an Township is named after Ping'an Trough. Ping'an Trough is 45 kilometers long and spans two townships. At the end of the Ming Dynasty, when war broke out, the people hoped for peace and took the name Ping'an Trough.