Investors in China’s stockmarket have been doing handsomely this year. The Shanghai composite index has risen by 12% from a multi-year low in February, notwithstanding a recent drop. Equity analysts and state media alike are cheering. For Xi Jinping, China’s leader, the rally was a relief, since retail investors own at least 80% of the market. A previous rout hurt them badly, adding to anxieties about the country’s future. To many, the recovery reflected good governance and fortune.