Nang-Sung-kwan, Nan-tien, China (Google Maps ⧉, OpenStreetMap ⧉)
Referenced In
The Travels of Marco Polo
by Marco Polo, da Pisa Rusticiano"to-day the pass which cuts this territory in the direction of T’eng Yueh is called Nang-Sung-kwan. It is hardly possible to doubt that this is the place called Nga-çaung-khyam by the Burmese Chronicles."