Zhang Youxia and Liu Zhenli, two of the most powerful military leaders in China, are now officially in custody. Rumors have buzzed in the Chinese diaspora for days, but the speed still comes as a shock; usually there’s a far longer gap between the detention of leaders and the official announcement of their fate. The crux of Chinese Communist Party (CCP) political language is not what it says, but when it says it—and to whom. People’s Liberation Army (PLA) mouthpieces have accused Zhang and Liu of having “seriously trampled on and undermined the system of ultimate responsibility resting with the...