It’s currently under question whether China will ever overtake the US in GDP. If you’re solely projecting based on the assumption that current growth will continue that is a sensible conclusion, but it’s a faulty one. First and foremost, China has a much older demographic makeup that will be a drag on economic grow. Second, the birthrate is significantly lower than the US (1.28 in China vs 1.64 in the US in 2020), where 2.1 is replacement. Last, the US has decent amounts of immigration that help make up the difference between births and replacement, while China is experiencing negative migration rates. China and the US are both attempting policy changes, but haven’t had much success.