Ninety-seven courtyards in stone
Yanchuan's Zhenjiawan keeps 97 courtyards and 258 caves—the largest complete ancient yaodong complex surviving in northern Shaanxi.
In Yanchuan County under Yan'an, Zhenjiawan is described as the largest and most complete surviving ancient cave-dwelling complex in northern Shaanxi, with 97 courtyards and 258 caves. Stone yaodong, stone courtyard walls, stone paths, date trees and millstones shape the fabric.