I have been interested in understanding just why China has been so quiet on the Russian violation of national boundaries as that is the key corner stone of Chinese foreign policy since the 80s.

Maybe it has to do with China receiving over 690M USD in weapons exports from the Ukraine last year and maybe in supporting very quietly Russia they want to ensure those weapons continue to flow.

Does anyone have a view on just what the Ukraine was supplying China with in the way of weapons?

There is some chatter that both countries are slowly nudging closer together politically/militarily as a combined superpower against the US/EU ie in general anything western.

So again did the US underestimate badly both China and Russia in its soft power thinking?