But I was the same age yesterday.... [ Mo Ran trails off, looking at Chu Wanning with a puzzled look in his eyes. ] Before I arrived here. When we were in the village.

[ Is it possible that Chu Wanning doesn't remember that? He can't think of why, but it's not the first time Mo Ran has been aware of events that no one else knows. That's a very distinct situation, and he can't think of why it would translate here.

If Chu Wanning were anyone else, he'd think they were lying. But this is Chu Wanning. ] How old do you remember this one?