One day. If it is a pure economy, then according to what I read in the newspaper, it is absolutely not impossible to surpass the United States from 2030 to 2040 and become a superpower to surpass the United States in 2050. At present, China has more than $900 billion in foreign exchange. According to this capital, in fact, the American economy can be said to be influenced and controlled by us. Because the reason why the United States has so many national defense budgets, apart from its own strength, is actually mainly to offset the deficit between revenue and expenditure by raising interest rates, and a large part of this deficit is paid by Asian countries such as China and Japan, so if China keeps refusing to buy his bonds, the American economy will be greatly affected.