As far as I know China is not only the largest economy or about on par with the US, but has also made huge strides in renewables, so this makes sense actually, much as we are not used to hearing international bodies inviting China to lead. I would go as far as saying this is a case of China already leading the world - at least at home, not sure how clean or energy-efficient their offshore projects are.
No one should undertake hobbies because they are attractive to someone else. Unless you want to join groups where you can meet people you’re attracted to, then the activity is just an excuse to mingle. But you are more likely to find a hobby rewarding if you are genuinely interested in it, no matter what others think.