In Huayuan County, Hunan Province, China, lives a unique ethnic group.They built the Hanging Foot Buildings on cliffs at an elevation of 900 meters.They can step barefoot on steel knives.And they even invented the world’s first “ferris wheel”.Let’s follow DO NHU QUYN,a Vietnamese international student from Hunan Normal University,Walking into Huayuan Jinlong Miao Village together,to Explore this ancient village built on the mountaintop.