In the 1520s, this village was an important military base. The village was encircled by stone walls, some leading up the steep hills of the valley, and some of the arched entries and exits still remain. The thickness of the remaining walls give some indication of the level of fortification, and the importance of securing this pass, a sort-of shortcut around the heavily fortified Badaling mountain pass.
As well as the old city walls, the village has several other sights to see: an old shrine which is alleged to cause difficulties for cameras; a restored-but-closed temple with a large bell inside, and a giant old tree just outside the temple entrance.
For more photos please see its website: changyucheng.com