If it is short, it may be difficult for ordinary investors to understand. Let me give you a popular example.

Crude oil investment is margin trading, which means that you can trade its own value as long as you pay a certain margin.

For example, 1 300 yuan, the current price of barrel oil, investors think that the price of crude oil will decrease. At this point, investors and oil dealers trade a part of the deposit.

Borrowed 1 barrel of oil and sold it for 300. The next day, the oil price was 280 yuan a barrel. At this time, investors buy it back at the price of 280 yuan and return it to the oil merchants. The margin was returned to complete the transaction, and the investor finally earned the 20 yuan price difference. This is the truth of making money by shorting.

As long as you buy crude oil in the right direction, you can make money no matter how long you short it.