Over the next two decades around 300 million Chinese villagers will move to the city, creating the largest urban society in the world. Cities like Shijiazhuang (9 million inhabitants), Wuhan (10 million) and Chongqing (30 million) are developing at breakneck pace into huge metropolises. In size they rival global cities like Chicago, London and Moskow, but their names are still unknown in the rest of the world. Journalist Michiel Hulshof and architect Daan Roggeveen recently published How the City Moved to Mr Sun about these unexplored megacities. On Tuesday 29 November, Michiel Hulshof will give a lecture on one of the most fascinating developments of our times: the rise of the Chinese megalopolis and its consequences for China and the rest of the world.