... Let me guess, you are not Chinese.
Look at the world from a different point of view, and you would understand that corruption is everywhere, not just in China. Some people are just better at hiding it.
If the famous US corruption cases, like Flint, have taught me anything, it's that corruption in US is on much lower level than in countries like Russia or China, and people and media are much, much less tolerant to it.
Basically, Flint scandal could never happen in Russia because no one would ever give a fuck.
There is significant precedence in the US of politicians being caught in the act and prosecuted as a manner of policy, rather than the sacrificial examples in RU and CH where it is more about politics and/or making an example of someone. Just look up the lists of American Federal/State/Local politicians convicted of crimes, there are a number of lists on Wikipedia.
From my personal experience, you're mistaken: the corruption is not a matter of policy. Rather, the policy is a matter of corruption.