Couldn't care less what a politician like Putin says in public while on an official state visit to China when he's desperate for support from the only economic lifeline he has left. I've browsed Russian geopolitics subs/social media in the past and they've never viewed China/Chinese people favorably before the war and I'm wondering why there's so many Russian simps in Chinese boards. Again, Russia is only using China as a partner of last resort because they've been shunned by the West due to their war of territorial expansion. China should view this relationship as a quid pro quo just like how Russians view it. If Russia can get back with the West while keeping Ukrainian territory even if it means enmity with China, I'm sure they would do it in a heartbeat.
Literally all answer post is based in Western propaganda and wrong view of the world.
1 - About Putin being desperate -> I dont know, he look pretty calm. Russia economy growing, they are winning in the battlefield, they have low debt, manufacturing greatly expanding. Where is the desperation?
2 - About Russia using China -> In what is Russia using China? Russia sell gas and petrol to China at lower price that they used to sell to Europe. Also sell food, some weapons and some nuclear tech. Then they buy microelectronics, cars and many other products from China. They have the most equilibrated trade balance between 2 big develop countries int he world. It is a win win for both, not some kind of favor of China to Russia.
3 - War of territorial expansion? ->Yeah sure, i don't want to enter in politics, but to think that this is a war of territorial expansion for Russia is very absurd. Look where are the historical borders of Russian Empire, and of Soviet Union. Then think again who is expanding.
4 - You are sure they will switch China for the West -> Based in what? Do you have such a low confidence in China? Why any rational independent country would change a rising China for a declining West? Besides that, your impression about Russia social opinion is wrong. I tell this speaking russians and having a belarussian wife. Russian politic groups is basically, orthodox conservatives around 50/60%, communist soviet nationalist 20%/30% and the rest who are liberals. The first 2 groups greatly dislike the West in all aspects and they are the majority of Russian society.
Only people who prefer the West over China are the liberals that got injected into Russian high position in Yeltsin times when their sovereignty was 0.
My personal experience is that russian and belarussian consider China highly successful and if something they are jealous in a good way of China's achievements and development.
5 - Why there is many pro Russians in China boards? -> Well, it is pretty obvious that the enemy of your enemy is your friend. This is a historical truth. China and Russia share a vision of the world and moreover their main spheres of interest are compatible. The logical area of influence of Russia are the slavic countries of Europe, while the logical area of influence of China are the countries that are historically influenced by chinese culture like Vietnam, Singapure,... and basically all Asia. The only gray area where both have interest is the steppes of Central Asia, where the main basic interest for both is that they are in peace and allow intra continent stable commerce and supply lines.
Also for China Russia is crucial strategically to provide resources in a way that is impossible to block, and to guard their back. The worst nightmare of China would have been a ukranaised Russia.
That would have been a checkmate for China.
So it is logical that Chinese government, and people favour Russia, and a Russian goverment that is clearly friendly to them.
6 - Finally I think it is obvious that Putin and Xi get along well, and this is not only due to the war. They know each other since more than 15 years ago