Very safe. To put it bluntly, foreign exchange transactions are currency exchanges between countries. There must be exchange rate differences between the two, and the exchange rate will be different in different periods. For example, we bought 100, and the exchange rate kept changing. When we sold it, it rose to 1 10 yuan, which is the profit of the transaction. This is an ultra-short-term trading mode, trading once every 30 seconds, one hour 120 transactions, and earning more profits in a short time through high-frequency trading.