Selling is a commonly used term in stock trading, which means not to be bullish on the stock, but to go short and let the price come down. Selling goods is to set the most accurate currency price range for the goods so that customers believe that the goods must be profitable.

Short selling, also known as short selling (term in Hong Kong) and short selling (term in Singapore and Malaysia), is an investment term for stocks, futures, etc., and an operating mode in stocks, futures and other markets. Contrary to the long position, in theory, one borrows the goods first, sells them, and then buys them back. Short selling refers to the expectation that the market will fall in the future, selling the stock in hand at the current price, and buying it after the market falls to obtain a profit from the price difference. Its trading behavior is characterized by selling first and then buying. In fact, it is a bit like the credit transaction model in business. This model can make a profit in the wave of falling prices, that is, first borrow goods at a high level, sell them, and then buy them back after the price drops. For example, if you predict that a certain stock will fall in the future, you borrow the stock when the current price is high (the actual transaction is to buy a put contract) and sell it, then buy it when the stock price drops to a certain level, and return it to the seller at the current price. The difference is the profit.