Gas:

European Union countries have increased their imports of liquefied natural gas (LNG) from Russia compared with before the Ukraine war, despite the EU's aim to quit Russian fossil fuels within a few years, an analysis by campaigners showed. Source.

China: they're relying on so-called "dual use" items: drones to spy and drop munitions, night-vision goggles for snipers, "sports equipment" that's actually bulletproof vests and helmets, that kind of thing. They're also supplying "spare parts" that can be used to repair or even assemble military equipment from scratch.