JUST after the 18th National Congress of the Chinese Communist Party, which starts in Beijing on November 8th, a short line of dark-suited men, and perhaps one woman, will step onto a red carpet in a room in the Great Hall of the People and meet the world’s press. At their head will be Xi Jinping, the newly anointed party chief, who in March will also take over as president of China. Behind him will file the new members of the Politburo Standing Committee, China’s supreme body. The smiles will be wooden, the backs ramrod straight. Yet the stage-management could hardly be more different from the tempestuous uncertainties of actually governing.