In 1911, the grandest building in Beijing was the Forbidden City’s 35-meter-tall Hall of Supreme Harmony, and Beijing, Tianjin and Hebei were one province. Over a century later the gleaming China World Trade Center’s Tower III stands at 330 meters. Often its top floors are obscured by haze. On a rare blue-sky day the view from the top affords a vista of gridlocked ring roads radiating out toward a seventh ring of garbage dumps and onward to a far less prosperous periphery. Hence the drive to decongest the capital’s core via the ambitious JingJinJi plan to integrate Beijing, Tianjin and Hebei into a single, massive urban corridor.