short position is an investment term such as stock futures, which refers to the behavior that the stock price becomes bearish in a short period of time, and the borrowed stock is sold and recovered in a short period of time. For example, when you expect a stock to fall in the future, sell the stock you don't own when the current price is high, and then buy it when the stock price falls to a certain extent, so the difference is your profit. The definition of shorting is the same as shorting, except that shorting is a short-term behavior, which can be a week or three days or so. Long means optimistic about the long-term stock price, thinking that the stock price will continue to rise for a long time, so buy stocks and hold them for a long time, and then sell them after the stock price rises for a long time to earn the difference income. Long-term bullish should actively do more. Short-term bearish should leave the market and wait and see.