Located in Nanjing, the ancient capital of the Six Dynasties, Zhong Ling Yuxiu and Hu Pi Longpan, the Four Architectures Tower has a hill in the city, named Qintianshan, also known as Jilong Mountain. On the hill, there is an Arctic Pavilion, which is built according to Xuanwu Lake in the north. The Southern Dynasty is one of the imperial gardens.