If you seriously think it's possible, than you yourself should be worried a lot -- the last thing the West needs is even stronger China with its enormous industrial base and control of Siberian resources.

It's already started. China sees Russia's annexation of Outer Manchuria as a great historical wrong:

https://lansinginstitute.org/2024/02/16/chinas-global-triump...

China has reverted to using Chinese place names for cities and regions in the Far East. e.g. "Vladivostok" is now officially "Haishenwai":

https://cepa.org/article/goodbye-vladivostok-hello-haishenwa...

https://asiatimes.com/2023/03/china-eyes-russias-far-east-re...

Russia is in demographic decline. China simply has more people to throw at the problem, even amid it's own demographic decline:

https://www.atlanticcouncil.org/content-series/russia-tomorr...

https://www.newsweek.com/russia-population-drop-2046-worst-c...

Killing off even more Russians in a pointless war of choice in Ukraine isn't helping matters.

Be worried then