He does have a little pause but then he reaches out to shake Shen Yuan's hand. "I'm Lancelot," is all he offers.

A part of him figures that if Shen Yuan is mentioning Galahad and Susan, then he knows already who Lancelot is. He has to work hard to push down the bristling, ready-to-defend feeling that he gets when he starts to suspect that someone he doesn't know is about to start telling him all they things they think they already know about himself.