Mu Xiaoya stuttered, she racked her brains on how to avoid this uncomfortable situation. She knows very well that it won't bring her any good if people know that you once ate dinner with someone like Zhen Guo, moreover it was a close dinner like between friends and not only a coincidence.
Some people might like to brag if they knew someone famous, but it won't bring you any good. For example, if you're a friend or family of a country's famous idol, will you reveal it to your not so close friends?
No, you won't. Because then they will ask you never ending questions about that famous person, or shamelessly ask you to introduce them. When you reject their unreasonable request, they will brand you as a stingy and petty person.