TOKYO -- China's current leaders and those from previous generations gather every summer for closed-door meetings in the seaside resort of Beidaihe, about 300km east of Beijing. For President Xi Jinping, the lead-up to this year's agenda-setting confab has been no excuse to take a breather from stomping out corruption.

On July 20, Ling Jihua, a close aide to former Chinese President Hu Jintao, was stripped of his Chinese Communist Party membership. Four days later, authorities announced that Zhou Benshun, the top official in Hebei Province, where Beidaihe is located, was placed under investigation. And on Friday, Guo Boxiong, a former vice chairman of the Central Military Commission, was kicked out of the party. Guo is suspected of selling promotions for bribes.