The so-called short selling literally means forcing the empty side to buy. The word "forcing the air" comes from futures; It means that many parties are constantly pulling up, forcing the empty side to close the position. Because it rises to a certain extent in futures, the empty side will be forced to close the position; Borrowing the stock market to describe the stock price rise makes it impossible for the empty side to make up the position at a price lower than its selling price, so it has to chase up at a high level; Refers to the state of the stock market. Similar to the meaning of "empty roll", it is not as fast as "empty roll", but long and dark; Forced short position means that the bulls keep pushing up the price until the bears can't stop and surrender; When the market is forcibly emptied, it will always be despised by investors, and when the situation can be seen clearly, the stock price (index) has risen. For example, when the stock price is in 3 yuan, everyone disdains it, and when it rises to 9 yuan, it will follow suit, and so on; To put it simply, shorting is a repeated unilateral rise, and people who sell stocks are not given the opportunity to wait for a callback before buying. The characteristic of this market is that once the stock is sold, it is difficult to buy it again, because you always want to wait for a callback to reach a low point, but this callback will always stop.