I thought China has already overtaken the US this year, or was that just projection? I thought US gdp was around $24tr and China around $28tr or something similar (but with the 4tr+ difference).

I've seen many notable projections also about China and Russia no longer being countries by 2028 (eg splitting due to war or civil differences) which is something I think we'll see a large pressure on a split at some point (especially in china).