Introduction to the Shiqiao Earth Building Group: The Shiqiao Earth Building Group is located in Shuyang Shiqiao Village at the hinterland of Nanjing Tianling Mountain. There are nearly 20 square and round earth buildings distributed on the valley slopes in the village. The earth buildings are built along the stream at various heights. Among them, the oldest square earth building "Yong'an Building" in the county, the sloped earth building "Changyuan Building" and the county's largest round earth building "Shunyu Building" are the most famous.