佛祖歷代通載 21.13

21.13

西夏神宗拓跋須蕃邸立。改年光定。夏人因大兵以金人不救。恨之遂叛。

Emperor Shenzong of Western Xia, Tuoba Zunxu, was enthroned and changed the era name to Guangding. Because the Jin people did not come to their rescue during the invasion of the great army, the people of Xia resented them and subsequently rebelled.