Tiao-yü Ch’êng, China (Google Maps ⧉, OpenStreetMap ⧉)

"…apparently near the Tiao-yü Ch’êng of my map…"

"…about a fortnight later he died at a place called Tiao-yü Shan, apparently near the Tiao-yü Ch’êng of my map…"

"In 1277 a Customs station was established at Tiao-mên and Li-Chou [Ts’ing-k’i Hien in Ya-chou Fu] for the purposes of Tu-fan trade."