Ed wasn't around when Mei and Al were talking. I don't know if he knows anything about the Dragon's Pulse. But he's usually happy to talk about alchemy if you're actually interested.

[Winry's eyes narrow slightly.]

Your world has a Philosopher's Stone? [She holds up her hand. That's not what he said and she looks somewhat relieved.] I'm sorry, I misunderstood.

[Those stones. Not good.]

Alchemists aren't supposed to create gold. [She's not going to say what else they're not supposed to do.] Ed could, if he wanted to. He has in the past, but he changed it back.

And there are two alchemists from my world here.

[She smiles.] I'm Winry Rockbell.