As a child, the New York Times journalist Edward Wong had no idea that his father had been in the People’s Liberation Army. But as he grew up, a second generation immigrant in the United States, Edward was hungry to find out more about his father and mother’s pasts in the People’s Republic of China. That hunger took him to study China at university and eventually to become the New York Times’s Beijing bureau chief. Edward’s new book, At the Edge of Empire, is a marvellously constructed work that traces his father’s journey through China as a soldier in the PLA, and his own reporting in China as an American journalist. It reveals how China has changed between the lives of father and son, but also how some aspects – such as the nature of political power – have not changed at all.  On this episode, I talk to Edward about the yearning of second-generation immigrants to understand their roots, why both China and America can be seen as empires, and the seventy years of change that the lives of father and son span.