Hong Kong: Chairman Xi Jinping continues to tighten his grip over every facet of Chinese society, whether it be top members of the People's Liberation Army (PLA), those who enjoy playing online computer games or students attending tutorial classes. All do so only with the express permission of China's authoritarian leader. On 6 September, Xi as chairman of the Central Military Commission (CMC) presided over a ceremony in Beijing promoting five members of the PLA, the world's largest military. The five lieutenant generals were promoted to general, the highest active-duty rank in the PLA. The newly minted generals are Wang…