Well-written historical fiction immerses us into the past as surely as a movie might pictorially show us a scene. In “The Fourth Princess,” author Janie Chang takes us to China in 1911, and we learn about the Boxer Rebellion and the endangered Imperial dynasty. The action is set in Shanghai, and the story is cleverly told through two points of view. Liu Lisan (first names are second in China) is an orphan taken in by a wealthy bachelor from a very important family. She was educated at private schools, but wants to make her own way in the world. The other main character, Caroline Stanton, is a newly arrived wealthy American who wants to hire a secretary to help her with her social obligations. Instead of hiring an American, she decides that a Chinese secretary might be more useful.