Kwa-chau, China (Google Maps ⧉, OpenStreetMap ⧉)

"a desperate attempt was made, at Kwa-chau, to recapture the young emperor."

"No place in Polo’s travels is better identified by his local indications than this. It is on the Kiang; it is at the extremity of the Great Canal from Cambaluc; it is opposite the Golden Island and Chin-kiang fu. Hence it is Kwa-chau, as Murray pointed out."