A buyout is a buyout of people's money, which can be long or short. Crude oil is profitable by buying up and selling short, that is, it is predicted that the future trend will go up, thus avoiding the unilateral skyrocketing and plunging. First, buying up is buying down money: spot crude oil trading implements a long-short mechanism, and you can buy more and more orders. You can buy by predicting the price drop. Three. Realize two-way and T+0 transactions. To make an investment, you should learn some fundamentals, buy up and buy down. This trading mechanism is internationally recognized. Second, technical knowledge, buying up and buying down can be profitable. Some people buy up and some people buy down. After hundreds of years of testing, it is successful, which is conducive to stabilizing the capital market. After the price falls, the position is closed to earn the difference. The spot crude oil can also make money because it is two-way, selling at the current price, and knowing how to set a stop-loss and profit-taking point! In other words, spot crude oil can buy up and down, and if it is predicted to fall, it will sell short orders. As long as the future trend is consistent with the forecast direction, it can be profitable.