Re: Reunification is a loaded translation
If you want to get pedantic about it Tiawan is where the Chinese leadership retired to when the PLA overrun the rest of China so strictly speaking mainland China are 'rogue' provinces and China's the actual, real, China. This was actually the situation for many decades after 1949 but practical considerations finally led to the recognition of China and the effective demotion of Taiwan from 'country' to 'not quite a country'.
I fully expect Taiwan to be absorbed by the rest of China but I don't think its going to happen for many decades. The reason is just straightforward economics China's economy is rapidly closing on the US's in size and their rapidly increasing capabilities in technology means that whatever HPE can field can be out-fielded by whatever China's equivalent is. (This is effectively what happened with Huawei.) We (the US) then counter with sanctions and other restrictions, bureaucratic moves that will only have a temporary effect because they alter the business calculus of where to put resources. (Build versus Buy -- we're forcing them to 'build' because we're preventing them from 'buying'.) Once this transition is over we effectively lose not just our soft power but our export market -- we'll find that our product offerings are uncompetitive, they're both outdated and expensive. We might want to buy American but the rest of the world,not so much. Tiawan will then find its natural business and trading partner is the rest of China.
Russia is important here. Its primarily and Asian country although we're used to thinking of it as European. China represents a market for its goods and services, 'the West' can't seem to stop needling it so Russians, being first and foremost pragmatists, will ignore 'the West' and just focus on relations with China. Together these two countries have direct and indirect borders with much of Europe and Asia so they're well placed to keep growing regardless of what we do.
We should focus on our own development -- mind our own business -- but I think we've forgotten how to.