The so-called short-selling mechanism simply refers to futures trading based on stock index futures and stock futures. According to the trading system, investors can sell stocks without actually holding them, and then buy them within the agreed time limit. If the stock price shows a downward trend, investors can make a profit in the process of selling first and buying later. Therefore, once the short-selling mechanism is implemented, investors can make a direct profit in the process of stock market decline, which is essentially different from the current profit only in the process of stock market rise.

The antonym is to do more.