Shanghai Shadows by Lois Ruby is about a girl (Ilse) who is in her early teens. She had lived in Austria, but with the Germans coming to invade, her family moves to Shanghai. In Shanghai Ilse meets new and interesting people, but also faces challenges, like when her older brother joins REACT (a rebellion against the Japaniese who are infesting China), she follows him, and joins the resistance.
This is a great book, and it deserves a rating of nine out of ten (9/10).
All people who liked Kiki Strike and the Shadow city, or Montmorency and the Assasains, would like this book.
I highly recomend this book for its plot, and how Lois Ruby creates the characters, some who would be your friend, and some, your enemy...