Author Jenny Zhang's new book “Sour Heart” links seven short stories about a community of Chinese immigrants living in contemporary New York City. The fictional narrators are all young girls who are navigating adolescence while becoming Americans. From the big sister who wants to be free of her close-knit family life to the young girl who fears speaking English in public, these small intimate stories represent big expressions of the hopes and fears of families trying to find home in a new country. Callie Crossley speaks with Jenny Zhang about “Sour Heart” -- our September selection for Bookmarked: The Under the Radar Book Club.