Socialism calls for the democracy of the workplace.
What China has done is replace the authoritarian bourgeois with an authoritarian government.
Just because North Korea's name is Democratic People's Republic of Korea doesn't mean it is democratic. Naming stuff their opposite doesn't make it so, but I'll admit it has been pretty effective for convincing people who don't know the true definition.
Or just that we shouldn't use the word "socialism" in conjunction with either, despite that being the name of one of the groups in question?
> What China has done is replace the authoritarian bourgeois with an authoritarian government.
In other words, China is not Socialist. Presumably, neither was the National Socialist German Workers Party while it was in control of the country.
The question then becomes, why is this relevant. Why say "that's not true Socialism!" in response to someone comparing Nazi Germany with China, when neither was Socialist?