How Many Megacities Does China Have?

China is urbanizing at a staggering rate—in 35 years, it has added more than 500 million people to its cities. As a result, it looks like the world has vastly underestimated the size and scope of growth in China's megacities, defined as those with more than 10 million people, according to a new report by the OECD. Bloomberg's Yvonne Man has more on "Trending Business." (Source: Bloomberg)