Not really, it's rooted in the Sino-Soviet Split, despite your "anti-Americanism" glue and mutual shared ideology (read: Communism).
It's not China's self-proclaimed 'true' intentions, but rather what the perception by opposing party that ultimately matters. For instance, China perceived USSR as a "revisionist power" and "existential threat", and I'll bet a $99 dollars that USSR would deny those claims and claim China was the "reckless power" and "aggressor". Perception by the opposing party is ultimately what matters and drove the Sino-Soviet Split, not what one side proclaims to be their 'true' intent.
If there is an enormous economic and military disparity between China and Russia, then it's entirely possible, in fact, likely that Russia will percieve China as a security threat to Siberia, due to declining Russia population, climate change rendering natural resources more accessible, and opening of the Northern Sea Route between Europe and Asia. Heck, anyone with half-a-brain seeing 120 million Dongbeiren landlocked without access to Sea of Japan as anomaly in world history.