Futures trading follows the principles of fairness, openness and justice. It is required that the futures exchange shall publish the relevant information of futures contracts of listed varieties and other information that should be published in a timely manner, and ensure the truthfulness and accuracy of the information. In this way, all traders can obtain true and accurate information on the basis of fairness and openness, so as to make correct decisions based on the obtained information. Prevent illegal traders from using inside information to gain illegitimate interests and harm the interests of other traders.