TOKYO -- When Chinese official Ying Yong was running the public security and police divisions in the eastern province of Zhejiang in the early 2000s, his boss, the party secretary of the province, was Xi Jinping.

Former subordinates of Xi Jinping in Zhejiang Province have gone on to assume key roles across China, giving the president a powerful grip over the country. (Nikkei Montage/ Source photo by Kyodo/ Getty Images/ Reuters)
'Zhejiang's new army' adds Hubei and Hong Kong to strongholds Beijing, Shanghai and Chongqing