Xingqing Prefecture, also known as Irqai, Äriqaya and Egrigaia in Tangut, Secret History of the Mongols and The Travels of Marco Polo respectively, was the capital of Western Xia (Tangut Empire) between the 11th and 13th centuries and its de facto independent precursor Dingnan Jiedushi, in modern Ningxia, China, centering on modern Yinchuan.
After the fall of the Tangut Empire, it was absorbed into imperial China. The Mongol leader and conqueror Genghis Khan, who founded the Mongol Empire, died there on 25 August 1227.
