The Russian or rather Kremlin's invasion of Ukraine has not only killed thousands of Ukrainians and destroyed thousands of Ukrainian homes and facilities, but it also killed thousands of its own Russian soldiers - and keeps doing so potentially even daily. Meanwhile, the Chinese leaders seem to have no problem engaging in trade and diplomacy with Russia's war leaders. More from trustworthy sources:

Russia is losing close to 1,000 soldiers every day, but it won't stop relying on mass assaults to pound Ukraine's front lines: UK intelligence
Russia likely suffered at least 355,000 casualties in Ukraine war - UK MoD
Chinese leader Xi meets Russia’s Lavrov as two partners tout strong ties
Already Tens of Thousands Killed - GNBN