Tangut history

kingdom or empire in ancient China (1038–1227)

Khara-Khoto, also known as Heicheng, is an abandoned city near the Juyan Lake in the sum of Bayan Toroi, about 25 km south of the seat of Ejin Banner in Alxa League at the western end of Inner Mongolia, China. Built in 1032, the city thrived under the rule of the Tangut-led Western Xia dynasty. It has been identified as the city of Etzina, which appears in The Travels of Marco Polo, and hence today's Ejin Banner is named after this city.