[He studies Lan Wangji's expression and then slowly shakes his head. It appears there are more differences then he originally thought.]

I've never met Lan Yi..How could I? The only Stygian iron I know..is the Stygian Tiger Seal I made. But I destroyed that just before I died.

[He lowers his eyes as he tries to remember. The memories of his previous life are hazy but he is sure he couldn't forget things like that.]

I made that in the Burial Mounds..but you're saying we knew about it before then?