If you don't do futures full-time, you don't have much time to look at the market, and your personality is relatively calm, you'd better do long-term work. However, if investors have time to stare at it every day and like heavy positions, they can only do short-term, but the short-term handling fee is not a small expense. If investors have not done it, it is best not to say which one they are best for. I suggest you try and find the one that suits you.
The long and short positions in general futures are different from those in stocks. Futures should be shorter, for example, futures positions for more than two weeks can be regarded as long-term One week to two or three weeks is called the center line, and less than one week is called the short line. Futures trading also has short-term in and out of the day, and ultra-short-term positions of several minutes or even seconds.