Personally, I think that doing futures is at most 5% to 10% of all my assets. If you trade in the day, it depends on your feelings. If you are really sure, you can move in Man Cang, but only during the day. Overnight basic warehouse below 20%. If you want to trade in the day, you must choose a matching variety. If you want to trade in Man Cang, you can't hold only one variety. This is too risky, so we should pay attention to diversification. Do your own familiar varieties, so you are more sure.