The country has not opened the foreign exchange market, so the domestic market is not protected by law. The specific operation principle is very simple. Because you want to preserve the value.

So,

1, buy bulls if you are afraid of rising. That is, if it really goes up 1 point, then you earn 1 point in the foreign exchange market, and cash is accompanied by 1 point. Capital preservation realizes value preservation. And fell by 1 point, then you lost 1 point in the foreign exchange market and earned 1 point in cash. Capital preservation realizes value preservation.

2. When you are afraid of falling, you sell and open positions. In other words, if it really falls by 1 point, then you earn 1 point in the foreign exchange market, and cash is accompanied by 1 point. Capital preservation realizes value preservation. And it rose by 1 point, then you lost 1 point in the foreign exchange market and gained 1 point in cash. Capital preservation realizes value preservation.