《资治通鉴·晋纪·晋纪四十》
夏国朝廷中的文武百官，都请求把都城迁到长安。赫连勃勃说： 我怎会不知道长安是历代帝王之都，土地肥沃，地势险固！
群臣请都长安，勃勃曰： 朕岂不知长安历世帝王之都，沃饶险固！
The civil and military officials in the court of Xia Guo all asked to move the capital to Chang'an. Helan Bobob said, "How can I not know that Chang'an is the capital of the emperors of the past dynasties, with fertile land and dangerous terrain!"