Wikipedia definition
1. Yujiulü DoulunYujiulü Doulan khan of the Rouran with the title of Fumingdun Khan (伏名敦可汗). His era name was Taiping (太平 Tàipíng). He was the son of Yujiulü Yucheng. In 492, he was succeeded by Yujiulü Nagai, his father's younger brother and his uncle who seized the title of khan from him in a coup d'état.
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