China and everyone else is already seeking out alternative sources of energy, not fuel though. But the only viable alternative to fossil fuel available at this point is nuclear. The others are still theoretical. Or you can find some cleaner fossil fuel, like gas from Russia. But it is arguably better. So in near term it is mostly going to be one of the existing producer of coal increasing production and offsetting the deficient and most likely doing it with even worse impact on environment and people. As Russia was preparing its assault on Ukraine, it also made some deals to supply more coal to China and India. And long term it won’t go away. A form of ever increasing carbon and environment tax applied across trade partners will put a long term pressure to move away from coal entirely, because it will force to switch to a different energy source, not just switching suppliers.