beijing china must step vigilance plot grab power political corruption bad form corruption wang qishan country still influential former top graft-buster write tuesday wang key ally president xi jinping step leadership reshuffle last month end five-yearly communist party congress could assume new role say source tie leadership though announcement might come weeks fear head party anti-corruption watchdog past five years wang spearhead xi battle graft oversee jail dozens former top officials include domestic security chief zhou yongkang china rebuff criticism corruption campaign much settle political score stamp genuine criminal act write party official people daily wang say fight corruption go beyond battle pilfer assets hedonism political battle political corruption big corruption wang write comment draw collection essay release congress previously publish full state media collection include piece former members politburo stand committee height power china aspects political corruption include formation special interest group try seize power organization activities outside party parameters aim break party unity wang write many new historical special characteristics carry great fight important ... prevent seize political power change party basic character add wang explicitly link notorious case political crimes mention zhou also former party boss southwestern city chongqing bo xilai sun zhengcai two former top general former top aide retire president hu jintao case party eradicate interest group mix political economic corruption wang write bo jail life 2013 sun put investigation corruption july challenge party power wang add north south east west center party lead everything forceful strong leadership party chinese people simply loose plate sand china 's former top graft-buster warn plot seize power