I think China is more interested in building up other countries MIC than the Soviets.
For example, we often see they will help a country to build a factory that can make chassis, starting off with mounting just a manned machine gun.
In the future those chassis will keep developing, and they will use some Chinese parts and munitions.
I think this is the best way to help a country defend themselves long term.
We don’t see them sending platforms to Russia, but components and machines that make components, they want Russia to have a string MIC and seem to be helping make it happen.
If you read about the Global Security Initiative you can see that this is a manifestation of that.