Méngyīn

Mengyin takes its name from its position on the northern, or shaded, side of Mount Meng in the Yimeng uplands. The county was established in the Han and its hills contain the remains of older settlements. An earthen wall was built around the county town in 1313, with an eastern gate called Wang Hai and a western gate called Zhan Dai. In 1467 the magistrate Bai Liangfu added a southern gate, known as Zhengguan, extending the town's defences under the Ming.