Píngdìng
Pingding stands on the western side of the Taihang Mountains, with Guanshan rising southwest of the old town. In 979 the Song renamed the county Pingding and moved its seat to Yuguan, where walls were extended around the settlement. An academy on Guanshan was repaired in 1498 by the Ming official Wu Xian. Far to the northeast, the passes of Panshi and Weize guarded a mountain route also known as Niangzi Pass.