Futures can be long (buy at a low price first, then sell at a high price) or short (sell at a high price first, then buy at a low price). In the market, long positions are called bulls and short positions are called bears. Bulls, like stocks, mean that investors are optimistic about the futures market and expect the futures price to be bullish, so they buy futures contracts at low prices and sell them when the futures contracts rise to a certain price to obtain the difference income.

A short position is to sell a futures contract by shorting the future futures price, and then buy and close the position when the futures contract falls to a certain price to obtain the difference income.

In fact, it is similar to the meaning of bull and bear in the stock market.