China GDP is $6 Trillion while the US is $14.5 trillion. China's main growth is imports to the US as this cools due to our slow economy. Meaning, they are growing at
10% a year on average, would take another 10 years if the US GDP went completely stagnate. Also, their economy growth dropped 50% during our housing bubble and proves a symbiotic relationship with the world's growth.
IMO this is impossible for China to pass us because China can only grow if we and the rest of the world have boom economies so they can sell more products. Currently, if the US wants to kill China's growth we'd simply slap a 25% import tariff on all products.
What China doesn't see is we're doing the same as we did to Japan in the late 80's early 90's just on a much larger scale. Meaning, Regan raised the debt limit 17 times and actually tanked the stock market.
What did this do to the Japanese and their imports? It completely killed their economy and their own
markets have yet to recover and 21 years later they're markets trade at 1/4 their 1990 level and Japans GDP is still at the 1994 level with a -5% growth this year.
I'd be willing to bet China will bust in the next 10 years because their market/GDP growth is based on products and NOT innovative ideas like the US. In short, they're being setup and know it, just to grab what they can.