The theory is your imagination, but in fact there is a "price limit system" for futures trading. Each individual's position cannot be greater than how much or the total position cannot be greater than how much, or the margin does not increase. By that time, the position can indeed go up, but it is difficult; Exaggeration: for example, 10000 could have increased the amount of rubber in one hand, and at this time it may only be100000; The bigger the position, the harder it is to add positions. Therefore, as long as you have money, you can't go straight up. There are still restrictions.