Zhou arrested as part of corruption probe , expelled from Communist Party . After graduating with a degree in oil exploration , Zhou was assigned to an oil field in the country 's northeast and rose through the official ranks from the late 1960s through the mid-1980s . Zhou was a member of the ruling Politburo Standing Committee Communist Party . He 's the highest-ranking official to get caught up in President Zhou 's anti-corruption campaign . Xi Jinping was also a patron of Bo Xilai , a former a fast-rising political star who was jailed for graft .
Zhou arrested as part of corruption probe , expelled from Communist Party . Zhou was a member of the ruling Politburo Standing Committee Communist Party . He 's the highest-ranking official to get caught up in President Zhou 's anti-corruption campaign . Xi Jinping was also a patron of Bo Xilai , a former a fast-rising political star who was jailed for graft .