Awww ok. This is figure skating, I guess you always have to have a grand scope of thought to every scenario out there.To a certain kind of mind, it is perfectly rational.
Scenario A. The Chinese federation figures that Shen and Zhou's bronze is probably secure. They do nothing.
Scenario B. The Chinese federation figures that Shen and Zhao's bronze is secure. They scurry around making deals anyway because, (1) that's how it's done in the ISU, (2) you can never have too much insurance, (3) maybe some future favors will be in the offing, (d) if they don't play, maybe the Russians or the Americans will cut a deal with someone else and freeze the Chinese out, and (e) it's a lot more fun to be an active player than to sit twiddling your thumbs on the sideline.