From my understanding, China and Russia is not trying to take over the west. What they want to do is to free the other regions of the world from the enclave the west has on them. A typical example being that the francophone countries paying tax to France. This has been going on for decades. The French impoverish these regions of the world by stealing their resources to enrich their own country and leaving these nations to die of poverty. And on top of that they tax these nations. Let's not even talk about the US.
This is more than just about oil or economics. It is more about pulling down the stronghold of the west. Maybe we are already witnessing World War III happening.
I can't tell you about China. But I can definitely tell you what "liberation" by Russian hands looks like. "Excellent examples" - DMR, Abkhazia, DNR, LNR. The only thing Russia "liberated" these territories from is from peaceful life, from life, from prospects, from the future. Having given them degradation, extinction, meanness, abomination ...
A counter question about the "colonies" of France, Britain and other countries. Tell me - what besides civilization and development they brought "bad" to the colonies ? The fact that now, having obtained freedom, someone pays taxes to them is a personal problem of the GOVERNMENT of these countries. And the people who chose such a government. And what do you think Russia has given, for example, to those territories that it occupied or "liberated" from the Western vector of development?