In little more than two decades, two-thirds of all Chinese—1 billion people—will probably be living in cities ( Devan, Stefano Negri, and Jonathan , ‘‘Meeting the Challenges of China’s Growing Cities,’’ McKinsey Quarterly 3 (2008): 107–116; https://www .mckinseyquarterly.com/Video/___ 2204). National and local officials must take steps now to ensure that this unprecedented transformation unfolds as smoothly as possible. What problems do you see as the benefits and harm with development of large cities so quickly?