Cast Chinese Coins, David Hartill, Trafford Publishing, 2005, ISBN 978-1-4120-5466-9, ... The Western Xia was a Tangut kingdom in the north-west (Gansu and Shaanxi) area of China with its capital at Ningxia. The Tanguts, who called themselves the Mi-nyag, were a Buddhist people of Tibetan extraction who did not adopt Chinese civilization as readily as the other Tatar peoples ...