Introduction to Tanxian Stone City: Tanxian Stone City is currently the smallest stone city in my country. It is located on Tanxian Mountain with an altitude of 96.7 meters. Because of its dangerous ridge and majestic city, it has been a battleground for military strategists of all ages and is known as the "Jiangnan". Badaling is said to be the place where Tan Qiao, a Taoist priest of the Southern Tang Dynasty, achieved alchemy. It is now the Jiaxing National Defense Education Base.