I am not sure why Chinese people feel the need to show some foreigners.
It gives them face. On TV you have foreigners who sing, who participate to TV shows, who say that they love China.
In China, I believe that until recently foreigners meant education, cosmopolitan, beauty, de mode... Showing some foreigners is a way to compliment yourself.
But this situation is changing. I will have a survey about the perception of foreigner by Chinese people.