Politically there is an opportunity for China in regards to the EU due to this war. But again - it depends all on China's "neutrality" in regards to Russia. (which I personally find doubtful - since it is obvious that China can't afford or allow itself for Russia to become an economic nobody and at the same time a political liability).
As such China is "gambling" heavily onto a EU disunity in regards to Russia and also towards the USA (see your own posts) - something that both the EU and USA are clearly aware off. And in case off a Russian defeat, or even a peaceful solution to Ukraine, both will certainly keep this in mind.
Europe has been under US control/influence now for around 75 years, and Eastern Europe for around 20-25 years, with a natural hatred/mistrust towards Russia. And China is offering as an alternative to the USA? we control your supply chain, and you need our products.
Since 2012 China in every dispute has been pointing out it's economic prowess and military strength - I am not aware off a single dispute that has been laid off due to a "friendly" diplomacy of give and take. The present India/China dispute (see your own post) is now maybe being laid to rest, simply due to India having to recognize that they do not have the economic and military strength to "defend" their point of view or interests.
As I stated before, China is following exactly the USA footsteps - we have the economic and military power - so do as we say.
The difference to the USA is, that China is propagating that kind of message to "controlled allies" of the USA (not some "neutral" union or state like India) and who additionally in basic, share the same values in regards to interpreting democracy, freedom and human rights.
Far more important - China is actually IMO, 20-25 years too early to get into such a power game with the USA and the EU.
So let's see in e.g. 5 years - were this "gamble" by China has led to. Living in China since around 2000, I can see very clearly that overall China's growth and development has slowed down considerably since 2014 leading to a large "dissatisfaction" among the Chinese population and it's private business community. Independent of China's GDP statistics that obviously are not helping in regards to reducing that dissatisfaction. It's just the already rich (and government controlled companies) are getting far more rich and dominating, then the poor improving upon their livelihood.
Undoubtedly a drastic change in USA policy is the prime cause for this (naturally they do not accept a rival) - but it was primarily enabled, via China's own overall policy shaping up from 2012 onward. Someone fired the cannon too early
- it will be interesting to watch though.