China's Foreign Minister Wang Yi reportedly told the EU's top diplomat Kaja Kallas on July 3 that the country cannot afford for Russia to lose the war in Ukraine amid fears the U.S. would shift focus towards Beijing, the South China Morning Post (SCMP) reported, citing sources familiar with the conversation.
Russia is hugely dependent on trade with China to continue the war effort. They have replaced western imports with Chinese goods, including parts for weapons. North Korea would not sell arms and send troops to Russia without Chinese approval either. China buys Russian oil and gas as well.
The Russian war effort is going well and looks like it will be sustainable for years while Chinese support continues.