Recently, China's broad money M2 has shocked the world by breaking through the 300 trillion yuan mark. This figure has instantly become the focus of the world. Especially in a simple comparison with the US money supply, it seems to indicate the huge scale of China's money supply, and even triggers the fantasy of "superior purchasing power". However, this intuitive comparison of numbers actually ignores the deep logic of China and the United States' monetary statistics and the fundamental differences in the financial ecology of the two countries.