CCDI has disciplined like 7m+ officials by now, flies and tigers (low and high), _you_ only hear about the juiciest tigers. 100+ provincial/ministerial officials gets investigated per year. It's a wide anti corruption program, lazy but easy back of envelop calc, there's ~100m CCP members, need to be CCP to be in politics and business, so 7/100 ~7% of those classes including top level, which feels like reasonable amount given historic corruption rates. Anecdotally, petty level corruption essentially gone, corrupt/graft industrial complex (banquets/gifts etc it was entire service sector withing broader luxury) went out of business 10 years ago. Not saying corruption gone - it's evolved to your normal financial vehicle engineering like in west.