The west will continue to isolate Russia. This means reducing purchases of Russian energy and other commodities. Russia will of course become desperate for foreign reserves. The ruble does not buy that much.
China is sitting on top of a very large amount of US Dollars and other hard currencies as well. They clearly need commodities and will do business with the Russians after extorting some excellent pricing. Continuing on this diabolical thread the Chinese will only be too happy to supply Russia with goods that Russia can no longer import. All at a substantial mark up.
If its good enough for Wal-Mart it probably will be welcomed in many parts of Russia. What China cannot manufacture they will import and sell to Russia.
So commodities exporters may find some unusual competition that they cannot match. Also China after decimating western manufacturing with cheap labour will market to Russia. If production bottlenecks develop the Chinese will increase prices to the west and suck more hard currency out.
China will also benefit from cheap Russian oil and gas. A cost advantage that western economies will not have. This will be a strategic advantage.
George Gutowski writes from a caveat emptor perspective.