answer: George is helping Zhu to select a coat. They will ask the salesgirl for a larger size.
documents: #Person1#: Zhu, how do you like this coat?
  #Person2#: Come on, George. Isn't that color too bright for me?
  #Person1#: Then how about this one?
  #Person2#: Oh, I'm afraid this color is too light. It easily gets dirty.
  #Person1#: Well, well, Zhu, you're being a bit difficult.
  #Person2#: What would you say if I buy this one?
  #Person1#: It's nice. Try it on. Now you look quite smart, but doesn't it feel a bit tight at the shoulders?
  #Person2#: Yeah. Let's see if there's a larger size. Well, they don't seem to have anything larger.
  #Person1#: Why don't we go and ask that salesgirl over there? I think she can help us.