It is pretty simple; a regional war in Ukraine weakens both the west and Russia while reducing their focus on China. China's best strategic interest is to keep

It is pretty simple; a regional war in Ukraine weakens both the west and Russia while reducing their focus on China. China's best strategic interest is to keep the regional war going as long as possible. China is not really "helping" Russia, rather propping up one side of the information war to ensure the war grinds on.