The Western Xia or the Xi Xia (), officially the Great Xia (), also known as the Tangut Empire, and known as to the Tanguts and Tibetans, was a Tangut-led Buddhist imperial dynasty of China that existed from 1038 to 1227. At its peak, the dynasty ruled over the modern-day northwestern Chinese provinces of Ningxia, Gansu, eastern Qinghai, northern Shaanxi, northeastern Xinjiang, and southwest Inner Mongolia, and southernmost Outer Mongolia, measuring about . The capital of Western Xia was Xingqing (modern Yinchuan), another major Xia city and archaeological site is Khara-Khoto. Western Xia was annihilated by the Mongols in 1227. Most of its written records and architecture were destroyed, so the founders and history of the empire remained obscure until 20th-century research in China and the West. Today the Tangut language and its unique script are extinct, only fragments of Tangut literature remain. The Western Xia occupied the area around the Hexi Corridor, a stretch of the Silk Road, the most important trade route between northern China and Central Asia. They made significant achievements in literature, art, music, and architecture, which was characterized as "shining and sparkling". Their extensive stance among the other empires of the Liao, Song, and Jin was attributable to their effective military organizations that integrated cavalry, chariots, archery, shields, artillery (cannons carried on the back of camels), and amphibious troops for combat on land and water. The full title of the Western Xia as named by their own state is reconstructed as /*phiow1-bjij2-lhjij-lhjij2/, which word by word denotes "white", "high", "kingdom", "great", or , "white", "high", "great", "summer", "kingdom". The corresponding Chinese name, 白高大夏國 ("White High Great Xia State"), was also used. Chinese and Japanese scholars commonly interpret the first two words as "upper reaches of the White River", which was possibly referring to the Yellow River.