China's economy is shrinking right now, so why aren't gas prices falling yet?

It just doesn't make sense, I feel like they should be dropping like a lead balloon. I could understand if there were supply shortages or war going on but neither are happening and yet the prices are still stubbornly high. Is it something to do with the "windfall tax" they've implemented recently? Or is it the heatwave? Any thoughts on this would be much appreciated