芒碭 [－砀]

Jyutping mong1 dong6
Pinyin máng dàng

Definitions (Wiktionary)
  1. name, archaic
    Mount Mang and Mount Dang (two mountains located to the southeast of present day Dangshan County, Anhui)
  2. name
    Mount Mangdang (located to the southeast of present day Dangshan County, Anhui)