Many thanks to the person who shared that you can ask your local Chinese embassy for a copy of „The Governance Of China“.
I reached out to the Chinese embassy in Vienna and got not only a super friendly response, but also an invite to the embassy + 6 copies of the German translation (2x II, III, IV)!
tbh just dropped them a message that I‘m interested in Socialism with Chinese Characteristics and asked if I could get a copy. They seemed excited that someone asked!