"In Ed Young's childhood home in Shanghai, all was not as it seemed: a rocking chair became a horse; a roof became a roller rink; an empty swimming pool became a place for riding scooters and bikes. The house his father built transformed as needed into a place to play hide-and-seek, to eat bamboo shoots, and to be safe. For outside the home's walls, China was at war. Soon the house held not only Ed and his four siblings but also friends, relatives,...