C525 Recast spirit bone whip

Zi Lingxue was suspicious, if she guessed correctly, that person's descendant, should be saying that she was the descendant of her ancestor, Yun Zi.

But why did the jade slip react so strangely when it mentioned Yun Zi's name?

Could it be that he recognised Yun Zi, but Zi Lingxue immediately rejected that idea? They were separated for five hundred years