宇文部鲜卑
宇文普回，宇文氏的始祖。根据《周书》的记载，普回是炎帝神农氏的后裔，在一次打猎的时候拾得三个玉玺，上有“皇帝玺”的字样，普回非常惊异，认为这是上天所赐。根据鲜卑族的习俗称天为“宇”，称君为“文”，所以自称他的部落为宇文国，并以宇文为其姓氏。
Yuwen & P return, Yuwen Shi's ancestor. According to "Zhou Shu" record, S & P return is about Yan's descendants, when Lost in a hunting three Yuxi, on the "Emperor Xi" message, general back very surprised that this is the gift of God. According to the custom of that day Xianbei as "Yu", said the king "culture", it claimed that his tribe was Yuwen country, and to Yuwen its name.