People say that there are millions of temporary residents in Beijing, who are like migratory birds in this city, settling down lonely and helpless in this big city, either for fame or profit. Yaoyao on the other end of the phone asked me: "Xiaoxi, what are you doing for?" I said sweetly: "For love!" Yaoyao laughed and trembled, as if she had heard a joke that had nothing to do with her.