I could Google this. But I'm just curious what ya think...
What do you think the population of China is?
What do you think the population of Germany is?
Are those numbers not many orders of magnitude different?
Talking shit? Free rides?
What's the population of America?
And the funny thing about America - if you consider just them and ignore everybody else on the planet - just America's emissions are not sustainable. And that's only a few hundred million people. Not billions.
The thing about China, though. They're leading the world in renewables. And if you had any sense then you'd realize renewables typically only work optimally occasionally. Things like wind power only work when there's wind. Solar when there's sun. Whereas coal/oil/gas you can burn 24/7/365 until there's no more dinosaur corpses or ancient forests left to burn.
Sure, China is currently the largest annual emitter of CO₂. That’s mainly because it’s the world’s manufacturing base plus a massive ongoing infrastructure and energy expansion. But per person, the U.S. is still higher! Americans emit significantly more CO₂ per capita than Chinese citizens.
Fossil fuels are still used for dispatchability in many places(China), but batteries, grid interconnects, and demand-shifting are changing that equation fast.
You ignore history. The USA - cumulatively - has produced a lot more pollution than China - cumulatively.