China is already the main supplier by far, and the rest Russia needs she easily gets via proxies, mainly Turkey and Central Asian countries. Moreover, it was well before the war when China supplanted the EU and the US as the main trade partner of Russia: can you see dates on the abscissa axis?

A random example that shows enormous spikes in transshipments, which then miraculously transform into goods for Russian market, deeply integrated with Central Asian due to Eurasian Economic Union agreement.