Why would China be willing to stop gas shipments from Russia? USA is also not willing to stop oil shipments from Russia, although Russia is the third-biggest oi

Why would China be willing to stop gas shipments from Russia? USA is also not willing to stop oil shipments from Russia, although Russia is the third-biggest oil exporters to the USA. Independent states usually don't do anything that would harm them directly, they force their colonies and vassals to harm both themselves and the enemies. In this case, it's the EU harming themselves and Russia with sanctions, while the USA and China being relatively unaffected.