He's already China's most powerful president in decades, so why does Xi Jinping seem to be tightening his grip even further? The strict measures include the treatment of Nobel Laureate Liu Xiaobo in his dying days, last Friday's sidelining of four Hong Kong legislators on the heels of President Xi's visit there and tighter controls over the internet. And now there's the purge of rising Communist Party star, Sun Zhengcai, leader of Chongqing. What's going on in the halls of power?
Produced by Charles WENTE, Theodora LOULOUDIS and Christopher DAVIS.