The Chinese are, and they seem to be working very closely with the Russians.
All is not what it seems there either....
TIFWIW:
Behind the scenes and layers....PRC has drawn several red lines for RUS
Friend of mine (and he is pretty high up in the know about this) says certain chips China makes...are held extremely close to their chest...especially given pressures and obstacles increasingly placed there by the West.
Specifics include stockpiles of such that must now be rationed almost (prioritised very well for this decade or so)...given known depreciation of certain production machines that China is caught in a bind about lately given premature door closing (and they know there is a marathon in a maze ahead still).
This is a significant problem PRC does not want to make even worse w.r.t where the horizon actually is versus thought to be (buddy used some idiom more complicated than this...but this will have to do).
There is a finish line (and a target finish time involved)...but now there will need to be much more autarkic + insulated commitment to it than before...and with as low risk taken as possible with deemed strategic clients/partners.
Russia approached them on this stuff a number of times, but were rejected each time by PRC.
PRC also has a complex w.r.t the expanse past the great wall. They do not forget so easily where all the barbarians and raiders came from in general.....people without the anchor of civilised hearth as my friend said.
China sent massed human waves (which it paid for quite dearly) into korea on Russia's (Uncle Joe USSR) request and trust....it included both transaction and emotional aspects.
But after him (in much of the chinese mindframe), just few short years that is all mostly forgotten by the Russians and Ussuri happens....not far from vladivostok that was taken away from the Qing.
People try to package too much of China (what they say in an instance....or allow to be heard)....but getting full picture is more complex.
I will continue more of this at later juncture....in the coffee thread and "taiwan next" thread.....but I keep the russian context here for people to consider a bit from another angle.