Soybean meal is charged a handling fee of 10 yuan, which is relatively expensive. Generally, the handling fee for soybean meal is 4 to 5 yuan. Buy at 42 13, sell at 42 14, earn a point 10, and the handling fee is 10 yuan, which means that you have neither earned nor lost. If you sell at 42 15, you will earn ten yuan, and the handling fee will be paid at the same time. Futures is the devil, it can devour your property and family, don't touch it.