The difference between Chinese Communist Party & Soviet Union Communism

I am American and half Chinese half Polish. My mom is from Beijing and my dad is from Poland - they met in the US and got married after becoming citizens and had me and my sister. Before meeting, my dad was opposing the Soviet Union and was an anticommunist in the 1980s when Poland was protesting and on strike against the Communist government. My mom on the other hand was and still supports the Chinese Communist Party.

How the hell did my parents get along!? My parents said there's a big different between the Russian Soviet communist system and the Chinese Communist Party. Is there?