On the one hand, after the formation of a commodity price trend, the futures price will move a long distance in a certain direction, and short-term traders often have to turn the profits that can be easily earned by holding positions into small profits, thus greatly reducing profitability and increasing trading risks;
On the other hand, in some cases, when the market trend is one-sided, we can't just rely on short-term indicators to make orders against the trend, so as to prevent the futures price from suddenly starting sharply and causing big losses due to late stop loss.