Yǐngshàng

Yǐngshàng lies in the flat country of northwestern Ānhuī where the Yǐng River runs into the often-flooding Huái. Just downstream, at Zhèngyáng, the Yǐng and the Pì meet the Huái at an old river crossing; the west bank, Western Zhèngyáng, belongs to Yǐngshàng and the east bank to Shòuxiàn. In the Míng and Qīng a customs barrier stood there as the Zhèngyáng Pass, taxing the boats that carried grain and goods between the central plain and the lower Huái.