Shorting requires caution. Last night’s spike is something we will see more of in the future, and the extent will be even greater. However, it often reverses within a few hours. When shorting, you need to bet on the price points. Who can guess where to short in the short term? Even if you hit the mark, like last night, the drop was not small, and the US stock market plummeted. Will you take profits? Human nature is greedy; as long as you don't take profits, you will incur losses and fall into a state of continuous loss while shorting. When you switch to going long and encounter a downward spike, can you hold steady? If you can't hold steady, you will stop loss and the big pie will continue to rise, causing your cost to increase. Repeated torment leads to a breakdown and chaotic decisions. Also, do not hold onto short positions; if you do, you will have to add to your position. Do you know where to add to your position? If you don’t add correctly, a small position can turn into a large one and lead to a complete loss. Why would you be willing to open a short position that could lead to a loss of hundreds of thousands but not open a long position of the same size? Understand this well: making small profits only requires following the trend and direction, and you can earn. Making big profits requires a strong grasp of the market and price points. When the opportunity arises, that’s when you should go in heavy.