There is a difference between futures trading and stock trading. The main difference is that futures trading has leverage. Under the action of leverage, your income and risk will be enlarged in proportion. If you want to hold positions overnight, you need to have a good grasp of the market, otherwise, under the leverage, once the market runs in the opposite direction, the risk is great. For example, if you buy more rebar today, if the market falls sharply tomorrow and the day after tomorrow, it is likely to break through your margin. In that case, exchanges and futures companies will take the form of forced liquidation, that is, if the market rises again on the third day, you will be out of the game and the virtual loss will become a real loss. Therefore, it is recommended to be cautious, that is, to hold positions overnight, to have a full analysis of the market, and to have sufficient margin. It is best to participate in the light warehouse and control the position. I hope I can help you!