Logical error, a person with 1 billion dollars can spend1billion dollars a day to make a transaction. Even the largest position, if the leverage is 100 times, is only nominal1billion dollars. At present, the nominal daily trading volume of the foreign exchange market is about 4-5 trillion US dollars, at least half of which is not leveraged, that is, it actually exceeds 2 trillion US dollars, and the remaining 2 trillion US dollars exceeds 20 billion US dollars even if leverage is regarded as 100, so the actual daily trading volume is at least 2 trillion US dollars, which is almost the largest venture capital market in the world. Investment institutions or investors with huge funds have no leverage or only low leverage, and individual investors with less funds have fewer investment hands, so the implied trading volume is even huge. The nominal transaction volume of the foreign exchange market is 4 trillion US dollars per day, and the annual GDP of the United States is about 10 trillion US dollars. According to your logic of small foreign exchange transactions, is the United States also poor?

When people buy foreign assets, China's 3 trillion foreign exchange reserves will not be easily sold. Due to various pressures, they can only buy US Treasury bonds, and will hardly take out any US dollars to speculate in the international currency market, because if they do so, exchange rate fluctuations will become huge and out of control, which will threaten the development of the real economy and international trade and have a greater negative impact on the country. If policymakers had brains, they wouldn't try to manipulate the exchange rate in this way. Historically, central banks in many countries have failed to manipulate exchange rates, such as the Bank of England and the Bank of Japan. Large institutions may sometimes have a large transaction volume, but only in a very short time, such as a few minutes, the exchange rate has risen and fallen by a large margin, such as 10 o'clock, at most dozens of points, but it will never fundamentally reverse the general trend. They will also follow the market, or they will create public opinion and affect the focus and theme of the market, but it is not easy to do this.