Qinglong Mountain, Longtan Street, Qixia District, Nanjing City, Jiangsu Province. According to Baidu map, Gu Quan of Nanjing Qinglong Mountain Cave is located in Qinglong Mountain, Longtan Street, Qixia District, Nanjing City, Jiangsu Province. Nanjing, referred to as "Ning", was called Jinling and Jiankang in ancient times. It is the capital of Jiangsu Province, a sub-provincial city, a megacity and the core city of Nanjing metropolitan area.