1. Germany industrialized 100 years before China. It's been burning large quantities of coal for far longer.
2. Germany or at least the EU can and should impose a carbon fee on imports related to a given nations carbon emissions/reductions.
3. Economically transitioning to renewables is better for a nations economy than continuing to burn fossil fuels anyway. Renewables are cheaper.
Pointing to another bad actor as an excuse to continue to be a bad actor we learn is not a moral position somewhere around 5 years old.
I will say on point one, the rate which a country can scale usage throws this off. For example the first 50 years of Germany's usage likely represents far less than a current Chinese year of usage.