It's a slow-moving story with a focus that shifts between characters without warning, but it paints a beautiful picture of a possible life on Mars. It is clearly an exploration of Chinese tensions between their self-perception and how they are viewed in the eyes of the world. Mars is a prosperous and egalitarian but rigid society. Earth is a dynamic but sometimes cruel society. The Vagabonds of the title are the very few who travel between these worlds and seek to reconcile them. The lack of narrative momentum is what took away a star for me, but it's definitely worth reading, especially if you're looking for something reflective.