In the five years since President Xi Jinping moved to the helm, China has become richer and more powerful. But what has this growth meant for the fate and fortunes of the ordinary Chinese family? As China's most powerful decision-makers meet to set the course of the nation for the next five years and a new generation of leaders emerges, we look at data from Chinese authorities and major surveys, to get some clues about how China's family life and society is changing.