"About Overwatch?" she asks, stopping in her examination of these very interesting rocks to sit back on her heels. "Why have you been digging into that?" All Mei knows is that 76 is from her world and knows what Overwatch is. She never would have thought he had some extra interest in it. Is that why he's out here with her? Does he want to get some information out of her? If that's the case, he'd be better off talking to someone like Reinhardt or Angela. Someone who can tell him about their headquarters, since Mei was only stationed there in between trips to different research outposts.