Question: Who is the paternal grandfather of Yujiulü Tuhezhen?
Sentence (from "Yujiulü Yucheng"): Yujiulü Yucheng( pinyin: Yùjiǔlǘ Yúchéng)( ?- 485) was ruler of the Rouran( 464-485) with the title of Shouluobuzhen Khagan( 受羅部真可汗).
Relevant evidence: No