谜语“永叔、子京撰史书,独公不疑惑”的谜底是"说唐人单雄信"

谜语: 永叔、子京撰史书,独公不疑惑(打一探骊,3+3)
类别: 探骊,3+3

谜底: 说唐人单雄信