China’s Communist Party elite was craving a firm hand on the tiller when it chose Xi Jinping for the nation’s top job in 2012. Over the previous decade, President Hu Jintao’s power-sharing approach had led to policy drift, factional strife and corruption. The party’s power brokers got what they wanted—and then some. Four years on, Mr. Xi has taken personal charge of the economy , the armed forces and most other levers of power, overturning a collective-leadership system introduced to protect against one-man rule after the death of Mao Zedong in 1976. Shattering old taboos, Mr. Xi has targeted party elders and their kin in an antigraft crusade, demanded fealty from all 89 million party members, and honed a paternalistic public image as Xi Dada, or Big Papa Xi. Now, as he nears the end of his first five-year term, many party insiders say Mr. Xi is trying to […]