After all, foreign exchange is a leveraged thing, and risks and benefits coexist. It is very likely that all the money earned in the medium and long term will be used to pay for the overnight stay. If you operate against the trend, it is likely to explode. In my own experience, I usually do short-term operations, strictly set stop-loss stops and control positions. In the financial market, some people make money and some people lose money. It's not as simple as saying that the dollar is rising and shorting other currencies to make money steadily. Everyone is making money. Who is losing money? Investment is first of all awe of the market, and any market is not as simple as theoretically imagined. RMB is a high-interest currency. This means that shorting the RMB has to pay overnight interest. The lever is small. Take a large foreign exchange dealer as an example. The conventional currency pair it provides is traded with a maximum leverage of 400 times. The USD /CNH provided by the same dealer only uses leverage of 10 times. Its rate of return can be imagined. Don't ask me why I only have 10 times leverage. I don't know. The transaction volume is small. This is the natural result of the first two articles. Few people do unprofitable things. Your quotation in this market needs to match your opponent's quotation before you can close the deal. Less trading volume means that your quotation and the other party's quotation need more "matching" space. The purchase price you quoted is often lower than the actual transaction price, and the selling price is higher than the transaction price.