China very much remains neutral and deaf to the West's call to sanction Russia, as do 160 other member nations in the UN. Frankly, it's an European confrontation that was started by the US to destabilize and weaken Russia. Many Chinese companies stopped their business activities in Russia since February and we didn't see a Chinese government calling its businesses to support Russia's economic activities. China has not supplied Russia with any ammunition, weapons, or money. Indonesia, India, Pakistan, N Korea, Turkey, and most countries not categorized as West still maintain businesses as usual or even at an elevated level with Russia.
You just can't single out China's business activities as helps to Russia.