Dalian Commodity Exchange and Zhengzhou Commodity Exchange open positions on the same day, and the positions can be closed by Ping Jin and closing orders on the same day. When the Shanghai Futures Exchange opens its position on the same day, it must use the Ping Jin instruction to close the position on the same day. Only unilateral handling fee is charged for closing positions on the same day, that is, opening positions once, not today, and closing positions once overnight or after the next day. Generally, I will explain the standard of handling fee to you, unless you are Xiao Bai and don't understand. When the futures company opens an account, it will give you an account in the margin monitoring center of the CSRC, where you can find your trading information. If it is different from the settlement documents given to you by the futures company, you can report it online. Regarding the handling fee, the cheapest soybean meal I know is usually around 4 yuan.