In futures trading, there are usually two modes of operation, one is bullish (buyer) and the other is bearish (seller). Whether you are long or short, buying and selling new orders is called "opening positions". I believe that the price will go up and down, and you can open a position to make a single order. The behavior of a trader to close a contract and conduct a reverse transaction is called "closing a position" or "hedging". If the futures price reaches the trader's stop-loss point or stop-loss point, the trader will close the position. You can explain it in detail on the internet. The technical analysis you mentioned is only one aspect of futures trading, which cannot be explained clearly in one or two sentences.