Sometimes we have a floating profit of several thousand U, but we end up losing money on the commission.

Because we can make more profit margins when we can guarantee the principal (not holding orders).

The advantage of capital preservation is that you don't hold orders, but sometimes there will be a pin that knocks out your position, and then you can follow your direction.

The main reason is that we have done it for the second time, and we must be cautious next time. $BTC