Gimme some of what you are smokingIn 1894 Japan invaded China and took Taiwan. Russia didn't care. That only emboldened Japan to invade Russia in 1904 and took South Sakhalin.
Of course, China cannot afford Ukraine to invade and occupy Russia using American supplied weapons. If China does not care, then China will be next when America orders Ukraine to invade China after taking over Russia.
Therefore, it is good China is supplying military technology to Russia to fight back.