China's government isn't compatible with (what we think) western democracy. Just this week a video was released (Manchester I think?) of China's Embassy guards trying to drag protestors inside the embassy while exerting violence (which they have no mandate to do) and if not for a British cop, the protestor would faced a worse fate.
There is documented instances of Chinese 'police stations' in various capital cities that exert pressure/violence in these cities at the whim of the ccp.
Industrial espionage is reported and just about expected from the Chinese companies/ccp here in Europe.
Pressure on politicians, public institutions, professors, etc for saying something that is sensitive to the ccp/Xi.
And these are just in our European soil (among many other things). If we go on about how China deals with Tibet/Taiwan, muslims, zero covid, etc etc, it is just a style of government that is in direct opposition with what we expect, and the fact they try to make us bend the knee of them, makes a lot of people not like any kind of Chinese influence in their turf.