What you invest in is a foreign platform, which is displayed in the form of futures. When you buy or sell a certain currency pair, it means that you have opened a position, and the size of the position is the size of your purchase or sale. For example, the leverage ratio of your investment is 1:200. If you invest in futures leverage, there is a position ratio that is the ratio of the number of positions you open and your total margin. The larger the leverage, the smaller and larger the margin used, and the greater your risk and reward.